AAA Batteries Size, Chemistry Types, and Replacements. Batteries aaa nimh

AAA Batteries. Size, Chemistry Types, and Replacements

AAA batteries are one of the most common cylindrical battery sizes used in various electronic and electric devices, like remote controls, toys, cameras, flashlights, radios, etc.

AAA batteries differ greatly in chemistry and hence they differ in capacity, voltage, current/voltage discharging characteristics, and many other features, which may be of great importance when powering sensitive electronic equipment.

Updated: May 2, 2023.

AAA Battery Dimensions, Features, and Specifications

AAA batteries are cylindrical batteries 10.5 mm (0.41 inch) in diameter and 44.5 mm (1.75 inch) in length.

Their standard label is ‘AAA’, but other labels are also in use, often depending on the country, chemistry, standard and similar, including LR03, R03, FR03, HR03, KR03, ZR03, 24A, 24D, 24LF, MN2400, MX2400, MV2400, Type 286, U16, HP16, UM 4, etc.

But, practically all the most important battery brands label them as AAA batteries.

The following chart lists the most common AAA battery chemistries, labels, and their features, including perhaps their most important features, AAA battery voltage, and capacity:

Chemistry	Common Name	Rechargeable	Typical Capacity (mAh)	Voltage
Zinc Carbon	R03, 24D	No	500-600	1.5
Alkaline	LR03, 24A	Mostly No	850-1200	1.5
Li-FeS2	FR03, 24LF	No	1100-1300	1.5 (1.8 max)
Li-ion	10440	Yes	350-600	3.6. 3.7
LiFePO4	IFR10440, IFR10450	Yes	250-300	3.2
Li-SOCl2	(10450)	No	600-800	3.6-3.7
Lithium	–	Yes	400-600	1.5
NiCd	KR03, 24K	Yes	300-500	1.2
NiMH	HR03, 24H	Yes	600-1300	1.2
NiOOH	ZR03	No	1000-1200	1.5 (1.7 max)
NiZn	–	Yes	500-700	1.6. 1.65

Although AAA batteries features vary greatly depending on the chemistry type, the most important AAA batteries are non-rechargeable alkaline AAA batteries and NiMH rechargeable AAA batteries.

However, with the advances in technology and chemistry, new types are gaining in popularity as well.

Non-Rechargeable (Primary) AAA Batteries

Non-rechargeable (primary) AAA batteries include Zinc Carbon, Alkaline, Li-FeS2, and NiOOH batteries.

Zinc Carbon AAA batteries are a somewhat older type of primary batteries, featuring a nominal voltage of 1.5 V and a typical capacity of 500-600 mAh.

Zinc Carbon AAA batteries were very popular AAA battery chemistry, but due to their lower capacity, these batteries are almost fully replaced by alkaline AAA batteries.

Alkaline AAA batteries are practically a standard chemistry type of AAA batteries.

They also feature a nominal voltage of 1.5V and a larger capacity of 850. 1200 mAh.

When compared with Zinc Carbon batteries, alkaline AAA batteries have a higher capacity and higher energy density, with longer shelf-life, with some brands offering up to 10 years of shelf life.

Note: most alkaline batteries are non-rechargeable (primary) batteries. But, specially designed AAA alkaline batteries can be recharged numerous times, although these are not standard alkaline batteries.

Unless otherwise labeled, the alkaline AAA battery is a primary, non-rechargeable battery.

NiOOH or Nickel Oxy-Hydroxide AAA battery is a type of alkaline battery where nickel oxyhydroxide is added to the manganese dioxide, leading to the 1.5 V typical voltage during high drain use and 1.7 V maximum voltage.

NiOOH AAA batteries have a very similar capacity to standard alkaline batteries, but they can be drained using larger currents and are often used in high-drain devices like cameras and similar ones.

Li-FeS2 or Lithium Iron Disulfide is a type of non-rechargeable AAA lithium battery featuring a typical voltage of 1.5 V during high drain applications but also up to 1.8 V maximum open-circuit voltage.

Its typical capacity is in the 1100. 1300 range, providing high capacity and energy density.

Li-FeS2 AAA batteries are commonly used in high-drain devices like cameras, flashlights, high-end toys, and similar.

Thanks to their ultra-long shelf/standby life (up to 20 years!), Li-FeS2 batteries are recommended for devices and applications that are used rarely/in standby, but they must be powered with a reliable power source, even after years (decades!) of non-use.

When choosing the best AAA primary battery, don’t forget to take into account the type of device that you have. some devices will tolerate large input voltage differences, but some will not.

For short. if you need a good primary (non-rechargeable) AAA battery, go for an Alkaline AAA battery from reputable brands. Such batteries provide stable voltage, long shelf file, and good capacity at an affordable price.

Rechargeable (Secondary) AAA Batteries

Rechargeable AAA batteries include battery chemistry types like Nickel-Cadmium (NiCd), Nickel-Metal-Hydride (NiMH), and various lithium-ion batteries.

Nickel Cadmium AAA batteries are an older type of rechargeable batteries featuring 1.2 V nominal voltage and a capacity of 300. 500 mAh.

These batteries feature a strong memory effect and a rather high self-discharge rate. However, NiCd batteries are also able to provide strong currents without adverse effects on the batteries.

On the other hand, NiCd batteries also contain cadmium (heavy metal, dangerous pollutant), and are being phased out in the favor of more environmentally friendly NiMH batteries.

Nickel Metal Hydride AAA batteries feature a nominal voltage of 1.2 V and a typical capacity of 600. 1300 mAh. Their nominal capacity and maximum allowed drain current greatly depend on the battery type (low drain, high-capacity or high drain, lower capacity).

Modern NiMH batteries have a very low self-discharge rate, with almost no memory effect, and with output voltage more stable than the output voltage of older NiCd batteries.

For example, Panasonic Eneloop 800 mAh AAA batteries hold 90% of charge after 1 year of storage, 80% after 3 years, 75% after 5 years, and even 70% after 10 years of storage, making them suitable even for standby applications and may be recharged 2100 times.

Also, Panasonic Eneloop Pro AAA batteries hold, for example, 85% of charge after 1 year, but their capacity is 950 mAh and may be recharged 500 times.

Both NiCd and NiMH batteries feature lower voltage when compared with Zinc-Carbon and Alkaline AAA batteries (1.2 vs. 1.5 volts), but most electronic devices are designed to be powered by either 1.2 or 1.5 volts batteries.

Just to be sure, before switching from 1.5 to 1.2V or from 1.2 to 1.5 volts, check the manual of your device. better safe than sorry 🙂

Lithium-ion AAA or 10440 batteries are rechargeable cylindrical batteries that are physically very similar to AAA batteries.

10440 lithium-ion batteries feature a diameter of 10.0 mm (vs 10.5 mm of AAA battery) and height of 44 mm (vs 44.5 mm of AAA battery). thus, the terms 10440 batteries or lithium-ion rechargeable AAA batteries are used interchangeably.

There are generally two types of lithium rechargeable batteries:

lithium-ion AAA batteries with an output voltage of 3.6-3.7 volts (or 3.2-3.7 volts) and a maximum charging voltage of 4.2 volts. These batteries include IMR (LiMn204. Lithium Manganese Oxide), INR (LiNiMnCoO2. Lithium Manganese Nickel), IFR (LiFePO4. Lithium Iron Phosphate), ICR (LiCoO2. Lithium Cobalt Oxide), or some other similar/hybrid (LiNiCoO2. Lithium Nickel Cobalt Oxide, LiNiCoAlO2. Lithium Nickel Cobalt Aluminum Oxide, etc.) technology.

The typical capacity of lithium-ion AAA batteries is in the 350-600 mAh range, but it also depends on the battery design (high capacity, low drain current or lower capacity, higher drain currents).

Unless explicitly stated by their manufacturers, devices/appliances/toys designed for 1.2-1.5 volt AAA batteries should NOT be powered by the 3.2-3.7 lithium-ion AAA batteries.

lithium rechargeable AAA batteries with an output voltage of 1.5 volts and a capacity of 400-600 mAh. These batteries feature Battery Management Systems (BMS) that ensure a stable output voltage of 1.5 volts and protect the battery from overcharging, over-current, high and low-temperature operations, and similar.

As such, they may be used as a direct replacement for 1.5 volts Zinc-Carbon or Alkaline batteries. Also, most of these batteries feature a micro-USB charging connector and may be charged directly.

AAA Batteries vs. 18650 Batteries

At first, AAA and 18650 batteries don’t have much in common. AAA batteries are cylindrical batteries 10.5 mm (0.41 inch) in diameter and 44.5 mm (1.75 inches) in length, while 18650 batteries are cylindrical batteries 18.6 mm (0.73 inches) in diameter and 65.2 mm (2.56 inch) in length.

18650 batteries are lithium-ion rechargeable batteries with a nominal voltage of 3.2-3.7 volts and a maximum charging voltage of 4.2 volts, and a nominal capacity of 1500. 5000 mAh (depending on the battery type and design).

On the other hand, three AAA batteries connected in series feature 3.6 volts (NiCd or NiMH) to 4.5 volts (Zinc-Carbon, Alkaline).

Certain devices are designed to be powered by either one 18650 battery or 3xAAA batteries using a special battery holder.

Although such devices offer great flexibility when choosing the batteries, the 18650 battery easily outperforms 3xAAA batteries in terms of power. some 18650 batteries may easily provide 30 Amps of current.

On the other hand, some EDC (Every Day Carry) devices like flashlights that are rarely used, but must be powered with reliable batteries after years of storage, should be powered by Li-FeS2 AAA batteries featuring up to 20 years shelf/standby life.

If your device may be powered by both AAA or 18650 batteries, choose according to your own personal needs.

How Long Do AAA Batteries Last

How long AAA batteries last depend on their chemistry and storage conditions. On average, when stored properly, AAA batteries last up to:

Zinc Carbon: 2-3 years,
Alkaline: 3-5 years, some models 10 years,
Lithium Iron Disulfide: 20 years,
NiCd: 2-5 years,
NiMH: 3-5 years, some models 10 years,
Lithium Ion: 3-5 years.

As one can see, among the very same battery chemistries, there are large differences in quality and manufacturing processes.

How Many AAA Batteries Weigh 200 Grams?

AAA batteries weigh differently. even AAA batteries of the same chemistries weigh differently.

For example (external links, open in the new Windows, battery datasheets PDFs):

Duracell Optimum OP2400: 13g → ~15.4 batteries weigh 200g; 15 batteries weigh 195 grams, and 16 batteries weigh 208 grams.
Duracell Coppertop MN2400: 13g → ~15.4 batteries weigh 200g; 15 batteries weigh 195 grams, and 16 batteries weigh 208 grams.
Duracell NiMH Rechargeable: 12g → ~16.7 batteries weigh 200g; 16 batteries weigh 192 grams, and 17 batteries weigh 204 grams.
Energizer E92 MAX: 11.5 grams → ~17.4 batteries weigh 200g; 17 batteries weigh 195.5 grams, and 18 batteries weigh 207 grams.
Energizer L92 Ultimate Lithium: 7.6 grams → ~26.3 batteries weigh 200g; 26 batteries weigh 197.6 grams, and 27 batteries weigh 205.2 grams.
Energizer NH12-700 (HR03): 11 grams → ~18.2 batteries weigh 200g; 18 batteries weigh 198 grams, and 19 batteries weigh 209 grams.

As one can see, AAA battery weight differs among different brands and among different chemistries.

Long Story Short: AAA batteries are a very common household type of batteries, with the dimensions of 10.5 × 44.5 mm (0.41 × 1.75 inches). Their most important types are:

Alkaline: non-rechargeable, 1.5 V nominal voltage,
NiMH: rechargeable, 1.2 V nominal voltage,
Lithium: rechargeable 3.6 (3.2). 3.7 V or rechargeable 1.5 V nominal voltage.

If You are unsure if your device supports other battery types, when buying new batteries choose the same battery type as you had before. again, better safe than sorry.

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High discharge rate AAA batteries for Mini-Z Competition or use these high capacity batteries for your transmitter or receiver packs!

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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.

FAQs

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.

Two AAA NiMH rechargeable batteries

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Sources:

https://www.batteryequivalents.com/aaa-batteries-size-chemistry-types-and-replacements.html
https://www.yeahracing.com/yeah-racing-rechargeable-high-power-800mah-aaa-nimh-battery-4pcs-ye-0032-00087531
https://futurism.com/best-aaa-batteries
https://williamsav.com/product/bat-010-2/

AAA Batteries Size, Chemistry Types, and Replacements. Batteries aaa nimh