AA vs. AAA Batteries: 7 Ways They Are Different. Batterie a aa aaa

Alkaline Batteries

Microbattery.com carries top quality AA, AAA, C, D, 9v, and hard to find alkaline battery products. We carry respected alkaline battery brands including Atomic, Duracell, GP Batteries, Energizer (and Eveready), Panasonic, Rayovac, and Sony. Alkaline AA, AAA, C, D, and 9 volt batteries can readily start up high current equipment with dynamic instantaneous power, and deliver a stable current for many hours. Alkaline batteries meet a wide variety of application requirements for a range of devices including portable radios and TV’s, motorized toys, clocks, electronic games, cellular telephones, electronic photoflashes, and more. If you are not sure which alkaline battery brand you want, but know the size you’re looking for, you can browse all batteries grouped by their sizes. You will find the more common AA and AAA batteries, C and D alkaline batteries, and 9 volt (9v) alkaline battery brands competitively priced. We also carry Energizer AAAA alkaline batteries (E96) which are most often used to power pen lights, laser pointers, and styluses.

For large wholesale and B2B orders please contact us directly at (305)-371-9200

Shop Popular Alkaline Batteries:

Toshiba LR41 1.5V 192 Alkaline Manganese Button Cell, 1 Battery

Tianqiu LR44 Battery (357A/AG13), Alkaline, Tear Strip (10 Batteries)

Maxell LR41 Battery, Alkaline Coin Cell (1Pc)

Toshiba LR1130 1.5V Alkaline Watch Batteries, Blister Pack, 1 Battery

Murata LR1130 (189) (formerly Sony) Mercury Free Alkaline Button Cell (1PC)

Toshiba Size AA High Power Alkaline Batteries, LR6GCP-BP-4CN (4 Pack)

Atomic (A-AAA 24pcs) AAA Ultra Alkaline 24pcs

Toshiba Size D High Power Alkaline Batteries, LR20GCP-BP-2CN (2 Pack)

Panasonic Size D Alkaline Plus Power Battery, AM-1PA/4B (4 Pack)

Rayovac Ultra Pro C Cell Batteries 6 pack

Toshiba Size 9V High Power Alkaline Batteries, 6LR61GCP-BP-1CN (1 Pack)

Rayovac Ultra Pro Alkaline 9V Batteries (1 Box. 72 Batteries) Bulk Pack

Tianqiu AG7 (LR927H/ 395A) Alkaline Button Cell Battery 1.5V (Strip of 10)

Toshiba 23A (LR23) Alkaline 12V Battery Bulk

Toshiba 23A Alkaline 12V Battery, Blister Pack, (1 Pc)

Additional Information On Standard Alkaline Batteries

Alkaline batteries were invented in 1949 by Lewis Urry, a chemical engineer at the Eveready Battery Company, and have been with us since the 1950s. They are the most widely recognized among primary batteries and served as the next step in off-the-shelf consumer batteries, gradually replacing the cheaper 1.5-volt zinc-carbon that powered most consumer devices at its peak. Alkaline batteries deliver more energy at higher loads than their zinc-carbon predecessors and are considerably less susceptible to electrolyte leaks from spent batteries. Leaks are caused by the production of hydrogen gas all primary batteries produce as they discharge. In the absence of adequate venting, pressure builds that ruptures the battery seal creating a corrosive crystalline formation that can spread even into the host device and cause damage.

In common with other primary cells, alkaline batteries have higher specific energy, hold higher capacities, and deliver nearly 40 percent more energy than newer rechargeable technologies such as the lithium-ion batteries. While impressive in published technical specifications, however, manufacturers often do not mention specific power, or power delivery, which is different from specific energy. Primary batteries are inferior to rechargeable batteries when it comes to specific power, particularly for loads that draw high current. Their lack of strength on loading makes alkaline batteries more suitable for light loads of lower drain applications such as remotes, flashlights, and other portable electronics. Where alkaline batteries fail to address the requirement for high capacity devices, lithium-metal batteries offer improved loading.

Alkaline and other primary batteries exhibit low performance under high load conditions due to their high internal resistance, which is how well electrical current flows through a material, as measured in ohms (Ω). As the battery is discharged, its internal resistance continues to increase, which causes a collapse in voltage. Demonstrating the performance of an alkaline battery in low drain devices as opposed to high drain devices, a depleted alkaline from a digital camera will frequently contain enough energy to power a wall clock for as long as two years.

The most widely recognized among primary batteries is the alkaline, which offers great benefits:

The excellent safety record of alkaline batteries allows for unregulated transport on aircraft. Unfortunately, alkaline cells are limited to light loads of low drain devices such as remotes, flashlights, and some portable electronics. Where alkaline fails to address the requirement for high capacity devices, lithium-metal batteries offer improved loading; however, because they are considered Class 9 hazardous material, the transport and shipping of lithium batteries are subject to stringent regulatory guidelines.

Primary batteries exhibit low performance under high load conditions due to their high internal resistance, which is how well electrical current flows through a material, as measured in ohms (Ω). As the battery is discharged, its internal resistance continues to increase, which causes a collapse in voltage. Demonstrating the performance of an alkaline battery in low drain devices as opposed to high drain devices, a depleted alkaline from a digital camera will frequently contain enough energy to power a wall clock for as long as two years.

The most common cell formats for primary batteries are AA, or penlight batteries, which were made available for the public in 1915; and AAA which appeared 39 years later to address the needs of camera manufacturers and the rise of smaller devices. Other size formats include the larger C, D, and 9-volt batteries. The 1990s saw the introduction of AAAA (pronounced quadruple A) batteries, originally designed to power laser pointers and other micro-format devices. The AAAA battery owes its origin to the 9-volt battery, which consists of six AAAA cells, each with a rated voltage of 1.5V. Other common formats include various disc-shaped, button cells such as the popular LR44 battery.

The alkaline AAA battery has only about half the capacity of an AA, despite their similar selling prices. To illustrate, a bicycle light powered by an AAA battery will provide half the runtime of the equivalent light outfitted with an AA battery for insignificantly little more. Prevailing consumer trends prioritizing downsizing over energy cost contributed to the disparity between their pricing in relation to their capacities. In their drive to cut their costs, cities will often buy alkaline batteries in bulk and consolidate their purchase orders. Where coin batteries are needed, such as the LR41 or the LR43 battery, others resort to switching to bulk lithium battery purchase orders.

AA Battery Specifications (Alkaline)

AA Battery Weight- 24 grams

AA Battery Nominal Voltage- 1.5 V

AA Battery Capacity (Avg.)- Alkaline ≈ 2500 mAh

AA Battery Composition- Alkaline, Lithium, Carbon-Zinc, NiCd, NiMH, Lithium-Ion

AAA Battery Specifications (Alkaline)

AAA Battery Weight- 11.5 grams

AAA Battery Nominal Voltage- 1.5 V

AAA Battery Capacity (Avg.)- Alkaline ≈ 1200 mAh

AAA Battery Composition- Alkaline, Lithium, Carbon-Zinc, NiCd, NiMH, Lithium-Ion

AAAA Battery Specifications (Alkaline)

AAAA Battery Height- 42.5mm

AAAA Battery Weight- 6.5 grams

AAAA Battery Nominal Voltage- 1.5 V

AAAA Battery Capacity (Avg.)- Alkaline ≈ 600mAh

AAAA Battery Composition- Alkaline

9V Battery Specifcations

9V Battery Weight- 45.6 grams

9V Battery Nominal Voltage- 9 V

batteries, ways, they, different, batterie

9V Battery Capacity (Avg.)- Alkaline ≈ 550 mAh Carbon Zinc≈ 400 mAh Lithium≈ 1200 mAh

9V Battery Composition- Alkaline, Lithium, Carbon-Zinc, NiCd, NiMH, Lithium-Ion

LR44 Battery Specifications

LR44 Battery Diameter- 11.6mm

LR44 Battery Weight- 1.95 grams

LR44 Battery Nominal Voltage- 1.5 V

LR44 Battery Capacity (Avg.)- ≈ 115 mAh

LR44 Battery Composition- Alkaline (similarly sized variants in silver oxide)

LR41 Battery Specifications

LR41 Battery Diameter- 7.9mm

LR41 Battery Weight-.57 grams

LR41 Battery Nominal Voltage- 1.5 V

LR41 Battery Capacity (Avg.)-≈ 25-32mAh

LR41 Battery Composition- Alkaline (similarly sized variants in silver oxide)

What alkaline batteries will fit in my device?

The table below displays some of the battery types available in AA and AAA sizes, and their general specifications:

Characteristic Primary (disposable) Secondary (rechargeable)
Chemistry Zinc Carbon Alkaline Lithium-ion Ni-CD Ni-MH
Capacity AA 400–1700 1,800–2,600 2,500–3,400 600–1,000 800–2,700
Capacity AAA ~300 800–1,200 1,200 300–500 600–1,250
Nominal Voltage 1.50V 1.50V 1.50V 1.20V 1.20V
Discharge rate Very low Low Medium Very high High
Shelf life 1–2 years 7–10 years 10–15 years 5 years 5 years

For additional battery information and other technical data please visit the Microbattery.com: Battery University Knowledge Resource Center

Shop Popular Alkaline Batteries:

AA vs. AAA Batteries: 7 Ways They Are Different

There are many types of alkaline batteries, but the most popular ones are AA and AAA. The two types of batteries provide a wide range of uses in our daily devices, like toys, TV remotes, wall clocks, and digital cameras. However, the two batteries differ in various aspects, such as size, use cases, and price. The amount of electrochemical materials in both batteries also varies, meaning they also deliver different power capacities. In this article, we will compare the two batteries side by side, examine their key differences and discover how they are used in different devices.

AA vs. AAA Batteries: Side-By-Side Comparison

AA BatteryAAA Battery
Year of Release 1907 1911
Dimension 50.5 mm (height) x 14.5 mm (diameter) 44.5 mm (height) x 10.5 mm (diameter)
Capacity (mAh) 2000-3000 350-1200
Voltage 1.5V 1.5V
Common Uses Remote controls, digital cameras, flashlights, toys, portable speakers TV remote controls, wireless computer mice, small toys, handheld games, portable radios
Price (approx.) 0.25-1.00 per battery 0.20-0.60 per battery
Shelf life 5-10 years 5-10 years
  • Ten-year shelf life
  • 48-count value pack of 1.5-volt AA alkaline batteries
  • Single-use alkaline batteries
  • Good for devices like clocks, toys, and flashlights
  • Easy-open packaging

AA vs. AAA Batteries: Overview

AA batteries use dry cell technology to power small electronic devices that do not require a lot of power. They contain a moist medium or paste charged with electrolytes, allowing electric current to pass through. AA batteries have existed for over 100 years and have continued to be effective in modern-day devices. Although technology has significantly evolved and many devices use rechargeable batteries, dry cell batteries remain significant in powering most handheld devices.

It is important to note that the name AA does not have a particular meaning. Instead, it’s a name for a standard battery size with nominal voltage. These batteries are bigger than AAA and are mainly used for devices such as TV remotes, wall clocks, handheld kitchen gadgets, and flashlights.

On the other hand, AAA batteries, also known as Triple A, are smaller than AA, and the name doesn’t represent anything besides the type of battery sizes they are. They rank second in the popularity of dry cells after AA. They have also existed for over 100 years but came in four years after AA.

Unlike AA batteries, they have a lower power capacity and are more effective for devices like remote controllers, smaller toys, and kitchen timers.

AA vs. AAA Batteries: What’s the Difference?

If you are looking for alkaline batteries, it’s easy to confuse AA with AAA batteries. Although both batteries perform similar functions, certain things set them apart. Here are the key differences between AA and AAA.


Size is the most noticeable difference between the two batteries. They both have the same cylindrical shape but different dimensions. The AA is taller, wider, and generally larger than their AAA counterparts. Their standard size is 50.5 mm (height) x 14.5 mm (diameter). AAA has a smaller diameter and length to fit in the smallest toys. They measure 44.5 mm (height) x 10.5 mm (diameter).


The capacity of a battery refers to the amount of charge generated by the electrochemical reactions in the battery. It is measured in ampere-hours or Milliamps per hour (mAh). The two batteries have different capacities mainly because of their size difference.

The AAA packs smaller electrochemical material, and therefore the capacity is limited. It delivers a capacity of 350-1200 Milliamps per hour. The AA battery, being larger, packs more electrochemical material, delivering up to 2000 – 3000 mAh, which is three times more than the capacity of AAA.


Just as their sizes and capacities are different, the batteries have different function durations. AA batteries run longer than AAA because they contain more energy. You cannot compare 3000 mAh with 13000 mAh; the difference is clear. AA batteries will run more than two times the duration of AAA.


Many individuals possess a basic understanding of how batteries operate. They recognize that AA and AAA batteries are commonly used and can power various devices, ranging from remote controls to smoke detectors. Nonetheless, confusion can arise regarding the appropriate battery size for each device.

In general, high-drain devices, such as digital cameras, require AA batteries, while low-drain devices, such as TV remote controls, are better suited for AAA batteries. Nevertheless, it is always advisable to refer to your device’s owner’s manual to ensure you use the correct battery size. Additionally, it is prudent to keep various battery sizes available to avoid running out of power unexpectedly.

Shelf Life

The duration for how long a battery can be stored before being used is referred to as its shelf life. Typically, AA and AAA batteries have a relatively long shelf life of approximately ten years. However, different battery types may have different shelf lives. Alkaline batteries, for instance, tend to be more durable than lithium-ion batteries. This is because they have higher internal resistance than lithium batteries, impacting their voltage output. The manufacturing date will also determine their shelf life.

Older batteries will not have the same shelf life as newer batteries. Nonetheless, it is important to store both batteries properly to preserve their functionality. Store them away from sunlight, moisture, and high temperatures, which may affect their internal composition and battery life. Extremely cold temperatures may reduce the chemical reactions of alkaline batteries. This explains why some batteries burst or leak in cold weather.

It is always advisable to store the batteries in their packages or protective casing to avoid short-circuiting that could result from contact with metallic objects.

Output Voltage

AA and AAA batteries have a similar voltage that ranges between 1.2V and 1.5V. Both batteries lose a certain amount of their voltage when stored for a long time. The big D-type battery also has a voltage similar to these batteries as they are single cells. If you need more voltage output, a series connection of the batteries will do. For instance, to achieve 9-volt output, you will need to connect six cells all at once.


The price of AA and AAA batteries varies based on brand, type, and purchase location. A four-pack of AA or AAA batteries costs around 5. However, this cost can be lower for generic or higher for branded batteries.

Generally, standard generic batteries are considerably cheaper than their branded counterparts. The battery type also influences the price, with lithium batteries typically being more expensive than alkaline ones. over, rechargeable batteries are pricier than disposable batteries.

Lastly, purchasing location may also impact battery costs, with online retailers usually having lower prices. However, they may charge for shipping. Overall, AA and AAA batteries are reasonably priced and can be found at a fair price with some comparison shopping.

Choosing the right power cells for compact devices.

AAA batteries (also known as triple-A batteries) power all kinds of devices, from recreational to essential. They’re found in dozens of devices from digital cameras and drones, to blood pressure monitors and laser levels. These tiny powerhouses deliver the same 1.5V output as a AA battery, but they are smaller and lighter so the gadgets they are used in can be more compact.

While all AAA batteries are the same physical size, their performance, durability, and cost can vary considerably. To help you find the right combination of power and value, we’ve rounded up the best AAA batteries to serve your needs.

How We Picked The AAA Batteries

Our main aim with this battery review is to explain the different types of triple-A batteries and give examples of the best of each type via our top picks. We researched all the leading brands to get a comprehensive view of the market.

Type: There are three main types of AAA batteries: alkaline, lithium, or nickel metal hydride (usually written as NiMH or Ni-MH). Each of these has its pros and cons, so it was important to understand how they perform in order to choose which was best for particular uses.

Power: Although all of these batteries have a nominal voltage of 1.5V, each device has a different way of using that stored energy. They are often referred to as high-drain (like drones) or low-drain (like simple alarms). When making the picks we wanted to offer solutions that suited all types of gadgets.

Price: There are plenty of cheap AAA batteries available, and some are an excellent value. However, high-drain devices can burn through them very quickly, so they are often a false economy. When choosing our favorites we tried to find the best balance between performance and price.

The Best AAA Batteries: Reviews Recommendations

Best Overall: Panasonic Eneloop

Why It Made The Cut: Although the initial cost is comparatively high, Panasonic Eneloop batteries offer incredible durability, good all-weather performance, and hold their charge for longer than their rivals.

Specs: — Type: NiMH — Capacity: 800 mAh — Pack Sizes: Four, 12, 16, 24

Pros: — Up to 2,100 recharge cycles — Ready to use — Durable power storage

Cons: — Expensive — Long charging times

Given the different performance levels and prices, it is not easy to pick the best AAA batteries overall. Our favorite disposable AAA batteries make a strong case, but with up to 2,100 recharge cycles possible, Panasonic’s Eneloops are currently the longest-lasting batteries on the market. They aren’t cheap, but because of their durability, they provide very competitive long-term value.

Panasonic’s Eneloop AAA batteries also overcome two of the notable drawbacks of many rechargeable NiMHs. First, a lot of them need to be charged before use, whereas these are pre-charged at the factory using solar energy (you may also be interested in our article about the best solar batteries ). Second, many don’t hold their charge while not in use. The Panasonic Eneloop batteries again deliver market-leading performance, retaining up to 70 percent for a decade (when stored following manufacturer instructions).

Unlike alkaline batteries that lose charge dramatically when the temperature drops, Panasonic Eneloop AAA batteries still function as low as.4 degrees Fahrenheit. However, when they do need to be recharged they will take several hours. It is worth buying these rechargeable batteries with a charger if you don’t already have one, as Panasonic’s own model has Smart features that charge each battery to the optimum level individually, and turn off automatically when full charge is reached.

Best Disposable: Energizer Ultimate AAA Batteries

Why It Made The Cut: Energizer’s Ultimate batteries are unrivaled in terms of consistent power output, shelf life, and temperature range. When reliability is important, they are undeniably the best choice.

Specs: — Type: Lithium Iron Disulphide — Capacity: 1,250 mAh — Pack Sizes: Four, eight, 12, 16, 18, 20, 24, 80

Pros: — Consistent power delivery — Outstanding shelf life — Excellent temperature range

Cons: — Expensive — Beware of fakes

When compared with other AAA batteries, the Energizer Ultimate is quite an expensive choice. It is a similar price to the Panasonic Eneloop, but is not rechargeable. It costs two or three times as much as the best alkaline AAA disposable battery. However, in performance terms, it has advantages over both.

A capacity of 1,250 mAh gives the Energizer Ultimate AAA Batteries dependable, durable power. In essence, it means they run more consistently for longer. These are the optimum batteries for high-drain devices like digital cameras, games controllers, and security devices. They have an operating range from.40 to 140 degrees Fahrenheit, so temperature fluctuations present no problems. The LiFeS2 chemistry gives it a shelf life of up to 20 years, and unlike rechargeable batteries, they don’t drain while being stored. They do not leak, and they are claimed to be 30 percent lighter than alkaline rivals.

We have read reports of fakes being discovered, particularly in large pack sizes. Always beware of unusually low prices, and only buy from reputable retailers.

Best Budget: Amazon Basics AAA Batteries

Why It Made The Cut: For many ordinary electronic devices, expensive high-performance batteries are simply overkill. Amazon Basics are a low-cost, effective solution for everyday use.

Specs: — Type: Alkaline — Capacity: 800 mAh (estimated) — Pack Sizes: Four, eight, 10, 20, 36, 100

Pros: — Multiple household uses — Long shelf life — Good value

Cons: — Modest performance — Leaks not unknown

There are times when high-power versions are a good idea, but often it is convenient to have a bunch of cheap AAA batteries in a drawer for everyday devices like clocks, kitchen timers, TV remotes, small toys, etc. There is little point in buying expensive lithium or NiMH rechargeable batteries for these low-drain devices. Amazon Basics AAA Alkaline Batteries are one solution, and the larger the pack size the more cost-effective they become.

Shelf life is quoted as 10 years, and they contain no toxic components so they are relatively easy to recycle. Minimal fuss-free packaging is another feature. Amazon doesn’t appear to provide a capacity rating for their alkaline AAA battery, though they do for their rechargeable version. Our estimate is based on that figure, and in our experience is likely to be within 50 to 100 mAh. We would not recommend them for medium- or high-drain electronics.

Best Alkaline: Duracell CopperTop Batteries

Why It Made The Cut: Duracell’s ‘copper-colored top’ is arguably the world’s most recognizable battery. It is hugely popular, and these versions provide excellent performance for ordinary household devices.

Specs: — Type: Alkaline — Capacity: 1,150 mAh — Pack Sizes: Two, four, eight, 12, 16, 20, 24, 28, 36, 40, 56

Pros: — Reliable long-term performance — Long shelf life — Good value for money

Cons: — Not for high-drain gadgets — Packaging is slightly confusing

Duracell’s CopperTop Batteries are a high-quality, mid-range choice. They don’t have quite the performance of lithium models, but they cost considerably less. At the other end of the scale, there are certainly cheaper batteries around, but ‘throwaway’ models don’t offer the long-lasting power of the Duracell CopperTops in things like flashlights, toys, electronic thermometers, bathroom scales, etc. — the kind of medium-drain devices where the need to change batteries often soon gets frustrating.

A capacity of 1,150 mAh is remarkably high for alkaline batteries, meaning Duracell CopperTops deliver more consistent energy than many competitors. Like all alkaline batteries, they lose charge more quickly at lower temperatures, so this is not a good choice for trail cameras or devices that are outdoors for long periods. Also, for high-drain devices, we would still recommend lithium alternatives.

Packaging can be a little confusing. Some say the shelf life is 10 years while others say it is 12 years. This may just be a design change and makes negligible difference to performance if any. There are rare complaints about batteries leaking but huge volumes of Duracell CopperTops are sold so in our view, the numbers do not indicate a significant problem.

Best for Flashlights: Panasonic Eneloop Pro

Why It Made The Cut: The high-performance Panasonic Eneloop Pro overcomes the power drain problems associated with rechargeable AAA batteries, so your devices are ready to go when you need them most.

Specs: — Type: NiMH — Capacity: 950 mAh — Pack Sizes: Four, eight, 12, 16

Pros: — Excellent energy retention — Pre-charged — Good cold weather performance

Cons: — Expensive — Nor for watertight devices

A flashlight is often something that is used in emergencies and may have been left unattended for months. The last thing you need when the lights go out is to be searching around in the dark for batteries. Lithium AAA batteries are a good choice but are expensive. Rechargeable AAAs are an alternative that is much more cost-effective in the long run, but the fact that they self-discharge (the power drains over time) can make them impractical. Panasonic’s Eneloop Pros have largely overcome this problem, and we think they are the best rechargeable batteries for the job.

Unlike many NiMH AAA batteries, the Panasonic Eneloop Pros come ready to use, having been pre-charged using environmentally-friendly solar power. Over the period of a year they will retain up to 85 percent of their charge, so they can be trusted to perform when required. They make an equally strong choice for high-drain devices like camera flashes, and drones. Or for long-term use in wireless keyboards, and portable electronics. They can be recharged up to 500 times.

Things to Consider Before Buying

All AAA batteries deliver 1.5 volts of power, so deciding which are the best AAA batteries for particular devices largely comes down to the type, or in other words, the chemicals used to hold the charge.

Alkaline: Alkaline AAA batteries combine graphite, magnesium, potassium, steel, and zinc. They are considered environmentally friendly because they are relatively easy to recycle. Shelf life (how long they will last if left unused) is from seven to 10 years. They are the cheapest AAA batteries and are recommended for low-drain devices like remote controls, clocks, and blood pressure monitors. Alkaline batteries can leak, which could damage equipment, but it is no longer a common problem.

Rechargeable alkaline AAA batteries do exist but are generally outperformed by other types.

Lithium: There are several types of lithium AAA batteries. The most common disposable types are simply called lithium. They have a shelf life of 10 or more years, and typically last three to five times as long as alkaline AAA batteries in use. As a result, lithium AAA batteries are recommended for high-drain devices. They can also withstand temperatures from below-freezing to over 100 degrees Fahrenheit. The one drawback with lithium batteries is that they can occasionally produce too much power for some gadgets, so it’s important to check the recommendations of the device manufacturer before using them.

The most recent development in non-rechargeable AAA batteries is Lithium iron disulfide (Li-FeS2). They are exceptionally durable and have a shelf life of up to 20 years.

Lithium-ion (Li-ion), and lithium iron phosphate (LiFePO4) are both rechargeable battery types and are generally used for vehicle and marine batteries. Lithium-ion AAA batteries are available, and many have the advantage of being rechargeable via USB rather than needing a separate charger. However, they are expensive.

NiMH: Most AAA rechargeable batteries are nickel metal hydride. While initially more expensive than alkaline or lithium disposable batteries, they can be recharged hundreds or even thousands of times. They work well in high-drain devices. Shelf life is typically around five to seven years.

Though invariably marked as 1.5V, nominal voltage is usually 1.2V. However, power is delivered very consistently rather than other types of batteries that can drop quickly. In many cases, this won’t make a great deal of difference, but again it’s worth checking the advice of your gadget’s manufacturer. Also, the charge drains away whether used or not, so some need regular charging. You can either buy AAA rechargeable batteries with a charger or source the charger separately.

Capacity: While the voltage of AAA batteries is within a fairly narrow range, it may also be worth considering the milliAmp hours (mAh) rating. This has an impact on how long the battery can supply energy. Technically, a milliamp hour is a thousandth of an amp, supplied consistently for one hour. In real terms, if you have two 1.5V AAA batteries, one rated for 750 mAh, and the other for 1,000 mAh, then the second will deliver its charge for significantly longer.


Q: What are AAA batteries used for?

They can be used to power a range of small, electronic devices from flashlights and TV remotes, to thermometers and bathroom scales.

Q: How much voltage can a AAA battery supply?

The nominal voltage — stated by all battery manufacturers — is 1.5V. In practice, voltage can fluctuate from around 1.2V to 1.6V. In the majority of cases, this isn’t enough to have any impact on the device being powered but it is worth checking the advice of the equipment manufacturer.

Q: How long do AAA batteries last?

In an unused state (called the shelf life), most AAA batteries last from seven to 10 years, though some last longer. Once inserted, it depends on the power demands of each gadget. It can be anywhere from several months to just a few hours.

Q: What’s the difference between AAA batteries and AA batteries?

Although they both provide the same voltage, AAA batteries are physically smaller than AA batteries. As a result, AAA batteries cannot be used in AA battery slots or vice versa.

Q: Are lithium AAA batteries worth it?

Lithium batteries are worth it for gadgets that need a lot of energy (such as digital cameras and radio-controlled toys), or in situations where they are subject to temperature extremes. The best lithium AAA batteries we found have an operating range of.40 degrees Fahrenheit to 140 degrees Fahrenheit.

Final Thoughts on AAA Batteries

Our top two picks are remarkable AAA batteries. The number of times the Panasonic Eneloop can be charged makes it surprisingly economical in the long term. The performance of the Energizer Ultimate is outstanding, although it does come at a price. For those who just want a cheap AAA battery for everyday gadgets, the Amazon Basics provide unbeatable economy.

Why Trust Us

Let’s get one thing out of the way: Online shopping is hard. Search for any product and you’ll be confronted with dozens (if not hundreds or thousands) of choices. Our mission at Futurism, where we cover the latest technology, is to simplify this experience by researching, testing, and continuing to evaluate products so we only recommend choices that are actually worth your time.

This post was created by a non-news editorial team at Recurrent Media, Futurism’s owner. Futurism may receive a portion of sales on products linked within this post.

The Best Rechargeable AA and AAA Batteries

Outlast juice-guzzling gadgets with these energy-efficient options.

Despite what that cute Energizer bunny thinks, batteries won’t keep going and going indefinitely. Before you know it, you’re reaching for a tiny screwdriver to pry open the battery cover on toys, the remote control, or dozens of other power-hungry gadgets around the house. According to recycler Battery Solutions, if you opt for disposable, single-use batteries, you’re contributing to the estimated 3 billion of them that end up in landfills every year. Go the rechargeable route and replacing batteries is much less of a drain on your wallet and the environment. There’s no question that rechargeable batteries beat disposable ones for most uses.

Best Rechargeable AA and AAA Batteries

  • Best Value Batteries: Tenergy Premium PRO NiMH AA/AAA Batteries
  • Longest-Lasting AA Batteries: Panasonic eneloop AA/AAA NiMH Charger and Batteries
  • Longest-Lasting AAA Batteries: Panasonic eneloop AA/AAA NiMH Charger and Batteries
  • Best AA Batteries for Remote Controls: Energizer AA/AAA Recharge Pro Charger and NiMH Batteries
  • Best AAA Batteries for Remote Controls: Deleepow AA/AAA LCD Smart Charger and NiMH Batteries
  • Best AA Batteries for Toys: Amazon Basics Charger and NiMH Batteries
  • Best AA Batteries for Video Game Controllers: Duracell Rechargeable NiMH AA Batteries
  • Best AA Batteries for Motorized Devices: Tenavolt AA Lithium Batteries and Charger
  • Best AAA Batteries for Motorized Devices: AmpTorrent AAA Lithium Batteries with USB Charging Cable
  • Best Large Capacity Battery Charger: Tenergy TN438 16-Bay NiMH/NiCAD AA/AAA Charger

The Expert: For nearly 40 years, I’ve been reviewing consumer technology for publications including U.S. News World Report, CNET, Rolling Stone, and Sound Vision. I’m also a judge for the Consumer Technology Hall of Fame. I have reviewed and used many rechargeable AA and AAA batteries over the years.

What to Look For With Rechargeable AA and AAA Batteries

Rechargeable AA and AAA batteries come in two main types: nickel metal hydride (NiMH) and lithium. NiMH batteries are more popular and have been around a while. In 2020, a handful of Chinese companies started selling a rechargeable version of lithium batteries. Here’s how the two types stack up:

Longevity: NiMH batteries generally outlast lithium ones. NiMHs also retain their power better when they’re sitting idle on a shelf. That’s why they are perfect for TV remote controls, wireless keyboards, digital cameras and camera flashes, wall clocks, and video-game controllers.

Performance: Lithium batteries output 1.5 volts of energy, while NiMHs output 1.2 volts. Lithium batteries have the advantage in devices where power supply is key. Motorized products, from remote-control toys to electric toothbrushes, run better on lithium.

Recharge Time: It takes three to seven hours to recharge a NiMH battery, while a lithium one fully recharges in an hour or two. For quick turnaround, lithium wins hands down.

Recharge Quality: Both types lose 20 to 30 percent of their might after several dozen recharges or when you don’t use them for a while. Lithium batteries have the slight edge on retaining power during multiple recharges, while NiMH batteries hold their charge longer when left unused.

Charger Considerations: You can typically use a NiMH AA/AAA charger with any brand of battery. Many have a flip-down AC jack that plugs directly into an AC power outlet. Conversely, lithium batteries should be repowered in their manufacturer-specific chargers.

Price: Overall, rechargeable batteries are a better buy than disposables—and you start saving right away. One major brand, for instance, sells a pack of eight single-use batteries for 22 and rechargeables (with charger included) for 30. If you recharged the batteries just once, you’d save money. But the truth is, you can recharge batteries hundreds if not thousands of times. The 10 here, 15 there that you’d spend on disposables really adds up.

How We Evaluated the Best Rechargeable AA and AAA Batteries

From the dozens of options on the market, I considered products only from well-known, reputable brands. These manufacturers have a proven track record of battery quality and charger compatibility. I also personally tested rechargeable AA and AAA batteries in a variety of devices to compare their performance.

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