The Best 18650 Battery Charger You Can Find in 2019 (Buyer’s Guide and Reviews)
Many household products such as flashlights and vapes use the 18650 batteries, and if you do not have the perfect charger, how will you use your batteries?
In choosing the best 18650 battery charger, you need to consider many factors. Not least of which is your battery size. A charger that can promptly, safely, and accurately charge various battery size is essential.
Without delay, I have compiled a list of the best battery chargers.
- A Comparison Chart of The Best 18650 Charger
- The Top 5 Best 18650 Battery Charger
- #1. XTAR VC4 Charger for Ni-MH and Lithium-ion Batteries. The Best Overall 18650 Battery Charger
- #2. Nitecore i2 Intellicharge Charger for 18650 NiMH Li-Ion/ Battery. The Battery Charger with an Intelligent-Charge for Heat Dissipation
- #3. EBL Battery Charger for Li-ion/IMR/Ni-MH/Ni-Cd. The Most Portable and Travel-friendly Battery Charger
- #4. Eastshine LCD Display Universal Battery Charger. The Battery Charger Which Provides Superb Protection
- #5. Efest LUC V4 LCD Universal Battery Charger. The 18650 Battery Charger that Double as a Power Bank
- 1. 2 Bays Or 4 Bays?
- 2. The Speed of Charge and Varying Charge Speed Selector
- 3. Safety Features
- 4. Compatibility
- Safe Practices
- Unsafe Practices
A Comparison Chart of The Best 18650 Charger
If you are in haste searching for the right battery charger, take a peek of the top 3 18650 battery charger below
The Top 5 Best 18650 Battery Charger
Different factors come into play when picking a charger, here are the 5 of the best 18650 chargers followed by a discussion on how you can select the right one for use.
#1. XTAR VC4 Charger for Ni-MH and Lithium-ion Batteries. The Best Overall 18650 Battery Charger
This battery charger is made from solid heat resistant plastic.
It is much bigger than most four bay chargers on the market today. This rugged heat resistant plastic allows for seamless dissipation of heat and aids easy removal and addition of batteries from the bay.
It comes with a USB connection for test probes, a USB output, and a JST-XH for an 11.1V/3s battery pack. In addition to a 3A/12V power supply, it has the required juicing-ability to kick start your battery.
Whether you are used to reading the charts off battery chargers or not, the user interphase of this battery is easy to learn and use.
The three buttons it comes with works for record/test, display, and current/refresh. That simple!
It has a digital screen which displays displayed slot, mode, battery type, charge current and percent of charge.
The ease of use is also aided by the animated bar effect which shows the discharging and charging of batteries. No matter how dim the screen is, you can still read displayed information off it.
The XTAR VC4 Charger for Ni-MH and Lithium-ion Batteries is suitable for a variety of conventional batteries. Within three seconds of battery insertion, the default charge mode kicks in.
Starting with a soft charge and low rate for the first ten minutes. If you do not want to start with the soft charger at a low rate, simply change it by pressing charge button.
Furthermore, you can run an IR or test voltage by using the gold plated and spring-loaded test probes.
Unfortunately, as reliable as this 18650 Battery Charger is, it does not come with audible signals or alerts. You must check your battery status regularly.
- Has an excellent charging speed.
- Automatic power-off function
- Can charge batteries independently
#2. Nitecore i2 Intellicharge Charger for 18650 NiMH Li-Ion/ Battery. The Battery Charger with an Intelligent-Charge for Heat Dissipation
This is one of the best 18650 Battery Charger you can get, and this for the right reasons.
First, it is compatible with Ni-MH, Li-ion and Ni-Cd batteries. Second, it is designed to hold two batteries at once. Third, it is fitted with LED light indicators which transmit the status of your batteries.
The Nitecore i2 Intellicharge Charger has an intelligent optimal heat dissipation function which serves as a protection against overheating.
This charger is compatible with many battery types. Furthermore, it shut off automatically, when your batteries are fully charged. The LED lights display the charge progress of your batteries as they charge independently.
The top part of the Nitecore i2 Intellicharge Charger is a black screen which displays numerical data on the sides. This numerical data can take the values 30%, 80%, and 100%. As the battery charge state reaches these percentages, it lights up.
You will agree this is a much better way of tracking your battery charge progress than a tedious wait for when the green light pop, indicating your battery is fully charged.
One distinguishing feature about this beauty is the fast charge speed feature. In this mode, batteries get charged at 1 amp in each bay. Although the fast charging speed mode can get your charger warm than the normal charging mode.
Therefore, if you decide to purchase this battery charger, stick to charging using the normal charge mode. Forcing it to charge above the normal mode may be disastrous.
- Has an excellent charging speed
- Can charge batteries independently
- Has an automatic power-off function
- Compatible with varieties of common batteries: Li-ion, Ni-MH, and Ni-Cd batteries
Best 18650 Battery Chargers To Buy Right Now
18650 Battery Chargers: I am preparing this article to help you choose a 18650 battery charger, but I can’t stop myself to say that these batteries are the soul of all DIY makers. These batteries are powerful, efficient, reliable and easy to use.
18650 is a lithium ion rechargeable batteries, that are popular in many DIY projects and are an excellent choice for powering a wide range of electronic devices. They are small, lightweight, and have a high energy storage capacity, making them ideal for powering small electronics.
These 18650 cell batteries are also highly efficient, which means they can last longer than other types of batteries. They are reasonably priced, making them an appealing option for do-it-yourself projects. However, efficiency, durability and long life of these cells can be achieved by properly charging and discharging them, and that’s why we prepared a list of Best 18650 Battery Chargers.
What you will read Toady here
Best 18650 Battery Chargers on Amazon
Here are 10 best 18650 Battery Chargers available on Amazon.in. You can buy them to charge these cells without any worry.
NITECORE New i4 Battery Charger
NiteCore’s new i4 Intellicharger is an improved multipurpose battery charger with a solid build and even claims to be made of fireproof materials. A wide range of Li-ion (Lithium-ion) types including IMR (Lithium-manganese) and LiFePO4 (lithium iron phosphate) cells can be charged in several voltages using the device, including NiCD (Ni-Cad) or NiMH (Nickel Metal Hydride) cells in sizes AAA, AA, C, and D.
In addition to 9–12VDC, this device can also be powered by your 110/120/240 wall outlet. With the i4, you can charge up to four batteries at once, and each cell can be charged independently. It is FCC, CEC, CE, and RoHS certified. Furthermore, you can charge a mix of D and smaller cells
NITECORE’s new i4 battery charger features four columns of four LEDs, one red and three green. If a cell is being charged or tested below them, a green LED will flash. Among the cells, one shows 30%, two show 80%, and three show 100%. If there are two greens on a steady means test, all three greens indicate that the battery is fully charged. However, four LEDs flashing at once indicate rejection of the cell.
- 100% Charging Acceleration in comparison to i4
- Uses Active Current Distribution Technology
- Expanded Compatibility to Support 3.7V 4.35V Batteries
- IMR Battery Recovery
- Automatic Current Selection Based on Battery Capacity
- Automatic Identification of Non-Rechargeable Lithium Batteries
Also Check: Top 7 Rechargeable Battery Chargers In India
Nitecore D2 DigiCharger
With a display added and a few other improvements, this charger is based on NiteCore Intellicharger i2. As a result, more battery types can be charged, and the charging can be followed in more detail than with the i2. Compared to the NiteCore Intellicharger i2, the D2 is a good universal charger. However, because of its 0.5A charge current, it is a slow charger for large cells.
A mains input connector (100-240VAC 50/60Hz) and a 12VDC input connector are included on this charger. It includes a Nitecore D2 DigiCharger, charger cord and EdisonBright battery carry case for Li-ion, IMR, and LiFePO4 batteries with the sizes 26650, 22650, 17670, 18490, 17500, 18350, 16340, RCR123, 14500, and 10440.
The charger has two switches:
- The SLOT key is used to select a slot; holding it down turns the display on or off without affecting charging.
- The MODE key on the other hand allows you to change the value displayed (Volt, mA, time), and with longer presses, you can select low charge current and LiFePO4 as well.
- Intelligent Auto Detect Function
- Optimal Design For NI-MH/NI-CD Batteries
- Optimized LifePO4 Charging Mode
- Digital Display Showing Voltage, Current Charging Time
USB 18650 Smart Cell Charger 4Bay
This universal charger charges four batteries simultaneously and tests battery capacity automatically. With its simple design and heat and low-temperature resistance, it is a new-age scratch-proof battery charger made of fireproof PCABS material.
The capacity of four batteries can be tested automatically, and four batteries can be charged simultaneously. Using the charging indicator, you can easily see the battery’s charging status. The red light indicates that it’s charging, while the green light indicates that it’s fully charged.
A total of four slots can be adjusted to accommodate different battery lengths. It is compatible with lithium-ion rechargeable batteries 26650/ 18650/ 18500/ 18350/3.7/ 14500/ 10440 and 17670/16340 V. Furthermore, USB charging allows travellers to charge their lithium-ion batteries whenever and wherever even without an outlet.
- Auto Detect The Battery Capacity to Select Charge Current.
- Auto Adaot to USB input Power
- Protection Against Over Heating
- LED Indicators For Detecting The Charging Status
Must Read: The Top 10 Motorcycle Riding Gear for All Levels of Riders
Conclusion: 18650 Battery Chargers
We prepared this list of best 18650 Battery Chargers by going through the listing of Amazon and then filtering it by as per reviews, ratings and quality. While some of them are very expensive but offer tons of features a few of them are inexpensive because of their limitations. So, go through the complete list and choose the best 18650 cell charger wisely. I personally prefer DIY solution which I also listed on number 10. It also offer safety, low voltage protection, modifications if needed, and can be build on a budget. So you can also choose it as well for charging 18650 batteries.
That’s it for now, for more such cool articles follow us on social media platforms and keep visiting at We Observed.
Shapes and Sizes
IMR batteries are produced in most of the popular lithium sizes; 16340, 14500 18650. Similar to a 16340, is an IMR 18350. I own a few of these myself. A 18350 is a difficult fit for most flashlights due to its thicker diameter. Its width is 18mm, whereas the girth of a 16340 (or CR123 primary) is normally 16.5mm. Most of the time, an IMR battery will NOT have a protection circuit, although some companies do put them in their IMR cells. It’s actually due to their non-protection that make IMR’s popular. As mentioned earlier, they don’t have the capacity of a cobalt-based cell. But their internal resistance stays low over time. This is what defines an IMR as “safer” than a LiCO (cobalt) cell. The IMR cell will charge faster, and has a higher discharge rate, making it more suitable for devices requiring a higher current to operate.
The Unprotected Advisory
The ‘big’ warning concerning the use of unprotected cells from flashlight experts, is always centered around charging and discharging. So if an IMR is being used in your favorite light, you must monitor its discharge, and be careful not to drain it below 3.0 volts. Because unlike a protected LiCO cell, (or unless your light contains a protection circuit) the battery will not shut off before the voltage can slip into the danger zone! If it does on a continuous basis, it could be damaged, resulting in a failure to charge…or worse. Similarly, charging also needs to be kept an eye on, since they must not charge above 4.2 volts. Most Smart chargers will terminate at or slightly under 4.2… but accidents (and failures) can occur.
Please be careful when considering the purchase of a charger that comes with a lower than average price. The algorithms of (no-name) low-cost chargers aren’t as trustworthy as more expensive brands and have a higher rate of failure.
To summarize: An IMR battery will;
- charge faster
- discharge at a higher current
- be safer (no risk of a protection circuit failure)
- deliver higher amounts of power to the source, but have lower overall capacity
As always, be Smart, do your homework and buy what best suits your needs.
To check out an assortment of lithium batteries, including IMR’s, click here or visit this Amazon page.
As always, questions and Комментарии и мнения владельцев are welcome
650 Battery Charger
18650 batteries are rechargeable, so you will need a good charger. We use two different 18650 chargers.
The best 18650 battery charger is the Nitecore Ci4 because it can charge pretty much anything.
Specifically, it supports: lithium ion 26650, 22650, 21700, 18650, 17670, 18490, 17500, 18350, 16340 (the 16340 is also known as RCR123), 14500, 10440 and Ni-MH and Ni-Cd AA, AAA, AAAA, C rechargeable batteries. This is our favorite charger for the 18650s.
Our runner up and “best buy” is the XTAR X4 Charger. It is a USB powered 18650 charger. It charges the batteries with any USB power source. This unit is dependent on the power source, and is a bit more expensive.
It has an LCD display for charging status. A 2amp interface yields slower charge speeds. Even the 5amp is slow because it charges at.5 amps. We have used the XTAR and Nitecore with a Nektek solar panel that has a 2amp USB interface and it has consistently worked.
650 Flashlight
The best mid priced 18650 flashlight is the Thrunite TC15 2403 lumen flashlight. It is about 1/2 the price of the PD36 and but a bit less bright. It is a GREAT buy (we have the older TN12 in emergency kits). We suggest two of these instead of one of the Fenix.
It has the following modes: Strobe (975 lumens for 226 minutes), Turbo (975 lumens for 126 minutes), High (652 lumens for 199minutes), Medium (266 lumens for 9.7 hrs), Low (19 lumens/177 hrs) and Firefly(0.29 lumens for 62 days) and it can charge itself with a USB power source. It is waterproof (IPX8) and has a max throw of 223m (764ft).
The toughest 18650 flashlight is the Fenix PD36 TAC. It is not cheap but it is durable and very bright, and has a clip. The light level is 1000 lumens, and it is water resistant to IPX8. This is a “duty” quality flashlight.
The PD36 TAC offers five different brightness levels and strobe:
- Turbo: 3000 lumen – 1 hr 30 min
- High: 1000 lumen – 3 hr 15 min
- Medium: 350 Lumen (8hr 24min)
- Low 150 lumen – 18 hr 45 min
- Eco: 30 lumen – 160 hr
- STROBE (about 3hrs 2000 lumen)
It has a 300 yard or 274 meter throw.
Both the Fenix PD36 or TN15 are great LED Flashlights that use the powerful 18650 battery.
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3 Комментарии и мнения владельцев
August, can you kind of put this in ‘plain English’ for us less tech savvy folks? Are these better than say, nicad batteries? longer life usage wise as well as recharge times wise? Are they more cost effective than other rechargeables? I don’t mind a larger up front cost if it is going to save me more money in the long run. DH uses rechargeable batteries for his work equipment (cheaper stuff, but company reimburses him) and if we can find something more cost effective, that would be great.
Good questions and thank you for the kind words. 1st off I would not switch devices that use AA or AAA to 18650 unless it was an EVERY DAY use. I might use up the old AA or AAA batteries first before considering switching. Remember these are completely different sizes, and weights. But if you have a need for a very bright flashlight or a device that uses the 18650 go for it. They can be recharged and are readily available from dozens of manufacturers and are likely to only get better over time. As an example I would recommend the ThruNite TN12 or Fenix PD35 to a police officer hands down. It has more power so will last longer in use. Nicad (NiCD), Lithium ion, Nickel-Metal Hydride (NiMH),lithium polymer, alkaline and lead/sulfuric acid in a 12volt car battery — are all ways to store energy. Alkaline and straight lithium (like Energizer Ultimate) are NOT rechargeable. We like the non-rechargeable Energizer Ultimate (lithium) over the other alkaline batteries because they are much less likely to leak/corrode. Also the Energizer Ultimate has a 20 year shelf life, so is great for emergencies. Some of the rechargables have longer shelf life too. Again you need to compare the battery to your use. 18650’s are designed for use – not shelf storage. Are these better than say, nicad batteries? longer life usage wise as well as recharge times wise? Not Necessarily, you have to read the specs to confirm. Some of the extreme drain rechargeable batteries will only recharge 100 to 500 times where a more normal high drain could be recharged 2000 times. This matters if you use a device every single day. The AA will last longer for the same amount of light than AAA, and an 18650 will last even longer (see the table). The 18650 has 10x the wattage capacity as the lower end AAA and the 18650 is 3x to 4x the capacity of the AA. Are they more cost effective than other rechargeables? Again unless you have a need stick with AA or AAA rechargeable batteries. The Eneloop AA is a better buy if you don’t have a direct need. It can be recharged 2100 recharge cycles (2100 times). So it would last 4 to 5 years of recharging with every day recharging. Amazon has good rechargeables also, but they are almost the exact same price as the name brand Eneloop. Here is more info on our AA, AAA and chargers- https://commonsensehome.com/best-battery-chargers/ Overall, we recommend any rechargeable including: car batteries, NiMH, NiCD and LiPo. The 18650 is rechargeable Lithium Ion. The only thing we recommend the Alkaline for are gifts or devices that are likely to get lost. Whether you are using AA, AAA, 9v, button or a car battery – match the battery to your needs. But note the Energizer Ultimate has more “capacity” than the normal 14500, but it cannot be recharged. We don’t recommend the alkaline AA/AAA batteries they are cheap. BUT an alkaline battery is way more expensive compared to rechargeable after only 2 to 5 recharges. They can be used in high-drain devices (high lumen LED flashlights, digital cameras etc) BUT their life expectancy will be sharply reduced. They also suffer from more temperature sensitivity. And in day to day experience they tend to corrode and fail more frequently.
Hi August, I enjoy your articles and the great information they contain very much and those of your wife also. I just have one small complaint. Your articles can be shared on social media everywhere for people all over the world but you don’t have a print function. Many times I want to print an article to reference later without trying to remember which website it was on. For everyday living commonsensehome would be one of the first places I would look, but for a certain battery I might have to check seventy different sites and no telling how many articles. Please think about adding the print button.
I totally understand your dilemma and we wanted to provide that feature. Laurie and I researched (and regularly check) for a printing plugin. None of the ones we found so far work on all platforms (Windows, unix, Android, iPhone, Apple mac etc). Here are a couple options: (1) In many browsers you can right click and select print (2) cut the entire post and paste it into your favorite editor and print (3) use the specific browser print function.
Hi August, thank you for putting this article together! I bit the bullet and bought a 2018 Lupine Blika headlamp to use on week long ski trips here in Alaska. Really only use the 3 watt output setting, the larger bulbs give an unnecessary amount of light and drain a battery VERY quickly. The battery pack that came with the head lamp is small and I need more capacity but the larger OEM battery packs are prohibitively expensive. Owner’s manual says the OEM battery packs have 18650 batteries in them so I figured I’d just buy 18650 batteries and make up my own battery packs. Discovered when I went shopping for batteries that there are apparently dozens of 18650 battery types/outputs and I have no idea which one to use. The battery voltage in the owner’s manual says 7.2 volts and it has a visual battery level meter built right into the the battery pack. I’m afraid of 2 things: I assume the OEM battery pack has circuitry to give a consistent power output so the light stays near the same brightness for the duration of the battery discharge cycle. If I make up my own battery pack, I’ll lose that circuitry and may toast my very expensive headlamp due to too high or too low power input. Is there a stand alone voltage, wattage unit I can buy to put in line to properly regulate my home made battery pack output? And, which 18650 battery will be the best for my usage? Because I’m carrying them, low weight and high capacity is necessary. Thank you for any answers you have for my above questions and thank you for putting out this great site! Matt Obermiller
650 Battery Equivalents
When replacing the 18650 battery, the best option is to use another 18650 battery with the same, preferably better characteristics.
However, some devices allow the use of other batteries, like 3xAAA batteries, 2xCR123A batteries, and similar.
Also, the CR123A battery is available as a non-rechargeable lithium battery providing 3.0 V and as a rechargeable lithium-ion battery (often designated 17340, 17345, or 16340 battery) providing 3.6. 3.7 V.
This difference in voltage (3.6 vs 6 vs 7.2 volts) can damage many devices and one must check the documentation of a particular device to be absolutely sure if 2xCR123A batteries are supported.
Note: non-rechargeable lithium CR123A batteries from reputable brands have a shelf-life of often 10 or even more years and even after 10 years, they can provide large currents easily. Thus, CR123A batteries are often recommended for standby devices like EDC flashlights, panic lights, and similar devices that are often not used for years, but when they are used, they must operate reliably.
For devices that are often used, a rechargeable 18650 battery is recommended choice. But for standby applications, 3 high-quality AAA batteries (alkaline batteries, not rechargeable NiCd or NiMH batteries) are a more reliable choice.
Even if you have rechargeable NiCd or NiMH AAA batteries, do yourself a favor and get one good 18650 battery with a built-in USB charger. such a battery will easily outperform 3xAAA batteries and it can withstand more charging/discharging cycles.
650 Battery Flashlights
18650 batteries are commonly used as high-power and high-density energy sources for LED flashlights, ranging from compact EDC flashlights to strong and powerful tactical flashlights.
18650 flashlights usually feature one to two 18650 batteries, rarely more. only high-output, very bright flashlights feature three, four, or even more 18650 batteries.
Since LED flashlights use a built-in LED electronic management system, some 18650 LED flashlights allow the users to use either 18650 batteries, CR123A batteries, or AA batteries.
As said before, two CR123A batteries may replace a single 18650 battery, which is recommended for EDC flashlights that are rarely used but must operate reliably even after years of storage.
In order to provide the highest possible IPX waterproof and dustproof rating, some 18650 LED flashlights use various USB magnetic charging cables, allowing the batteries to be recharged without any openings on the battery’s body.
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650 Battery vs 26650 Battery
18650 and 26650 batteries share the same length, but the 26650 battery is wider and has some ~2x larger volume.
Thus 26650 batteries are often used in devices requiring even more power and energy. 18650 battery packs plenty of energy, but 26650 packs on average 2x more.
18650 battery can be used instead of 26650 battery using a special battery holder, just be sure that 18650 battery can provide enough current for that particular device.
IMHO, 18650 batteries are great, but if your device supports the use of 26650 batteries, go for 26650 batteries.
650 Battery Frequently Asked Questions. 18650 Battery FAQ
Here are some of the most common questions about 18650 batteries:
How to charge a 18650 battery?
Depending on the 18650 battery type, the best way to charge the 18650 battery is to use a 18650 lithium-ion battery charger.
18650 batteries that feature micro-USB or similar charging ports may be used via USB charging ports found on computers, laptops, or using USB wall chargers.
How long do 18650 batteries last?
18650 battery may last up to 300-500 charging cycles. after which its capacity drops down or below 80% of the nominal capacity.
How long does it take to charge a 18650 battery?
Charging time depends on the battery capacity and charging current, but it shouldn’t be too fast. charging times around 3-5 hours are considered optimal, although there are models that can be charged with much stronger currents.
18650 battery storage best practices?
18650 battery should be stored at room temperature (68-77°F, 20-25°C) in a dry, non-condensing area. Also, the lithium-ion batteries should be stored and transported in a semi-charged state (50-60% of nominal charge).
18650 battery should not be carried in the or bag with metal items (keys, for example) present which may short-circuit the battery.
What is the voltage of a completely charged 18650 battery?
End charging voltage depends on the exact battery chemistry and ranges from 3.6 to 4.2 volts.
Is a 18650 battery the same as AA?
No, the 18650 battery is a lithium rechargeable cylindrical battery featuring physical dimensions of 18.6 × 65.2 mm, while the AA batteries feature physical dimensions of 14.5 x 50.5 mm and are available in various both non-rechargeable and rechargeable chemistries.
Some devices intended for 18650 batteries also come with a special battery holder that allows them to use either 18650 or AA batteries, but due to the larger dimensions, 18650 batteries are able to store more energy than AA batteries.
Which is better, a single 18650 battery or 3x AAA batteries?
AAA batteries feature physical dimensions of 10.5 x 44.5 mm, while 18650 batteries feature physical dimensions of 18.6 x 65.2 mm.
Some devices intended for 18650 batteries come with special battery holders allowing them to use either 18650 batteries or 3x AAA batteries instead of a single 18650 battery.
Although such battery holders allow the user to use whatever battery is available, a single 18650 battery is able to store more energy than three AAA batteries.
Is there any reason you shouldn’t or can’t make a vehicle battery out of several lithium 18650 batteries?
While 18650 batteries may be used for making large battery packs, each of these 18650 batteries must have a separate wire for monitoring the battery’s condition and for equalizing the battery.
Since such battery packs require a huge number of individual 18650 battery cells, such battery packs would also require a rather complex Battery Management System (BMS).
For example, in order to create a 12V 100Ah battery pack using 3.2V 3000 mAh 18650 Lithium Iron Phosphate (LiFePO4) batteries, one would need 136 (4S34P) 18650 batteries, and only 4 (four) 3.2V 100Ah Lithium Iron Phosphate (LiFePO4) battery cells.
It is much easier and less complex to connect 4 cells in series than 136 batteries in 4S34P configuration.
And electric vehicles use much larger battery packs than simple 12V 100Ah batteries.
For short: the best battery replacement for a 18650 battery is another 18650 battery. plain and simple. When choosing new batteries, consider your old batteries and the device(s) you have, and their requirements.
Note: never, but really never charge lithium batteries with chargers not designed for such batteries. Also, never throw them in fire, leave them in the hot car, or similar. And, after they served you well, dispose of them properly (they can be almost 100% recycled!).