Post last updated on July 15. 2021 by Wayne Wilson. Check also out the homepage for the latest posts
Chargers for flashlight batteries
If you have a flashlight or any other light source that runs on rechargeable batteries, you might need a battery charger as well. Most flashlights, bike lights, and headlamps run on rechargeable batteries that can either be charged inside the light source, or taken out and charged in a battery charger. Even if your product is chargeable with a USB cable that usually comes with the product, having extra batteries with you always comes in handy if you embark on longer journeys. Below are some battery chargers that should cover your needs, but always make sure that the charger is capable of charging your battery type. Disclaimer: LumenFreaks is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon
| Image | Title | Description | Buy |
|---|---|---|---|
Top | 10 Bay Charger | Save time and charge up to 10 rechargeable batteries at once with this highly popular flashlight battery charger from AmzFei | See More |
Top | 8 Bay Charger | This charger handles up to 8 batteries of all the standard types, with a detailed LCD screen to monitor the charging progress | See More |
Top | 4 Bay Charger | If you don't have a lot of batteries that needs rechargeing at once, this 4 bay charger with LCD screen from Nitecore should be sufficient | See More |
 | 2 Bay Charger | The last one is this 2 bay charger from Snado, for those of you who only need to recharge one or two batteries at a time | See More |
General info about rechargeable battery chargers
Battery chargers should only be used with rechargeable batteries, do not try to charge disposable batteries in them. Doing so may cause the batteries to build up pressure and rupture the battery, causing it to leak black goo, or even explode. Make sure that your batteries are rechargeable before you use them in any charger. Now that the safety warning is out of the way, when you look at the product specifications you might see a lot of confusing numbers, like 18650, 22500, 14430, and so on, these are actually the physical sizes of the batteries. So a 18650 battery is 18 mm x 65 mm, a 26500 battery is 26 mm x 50 mm, etc. The most common battery sizes are 18650 and 21700. See the flashlight battery types article for more examples and pictures of various batteries. The chargers on this page can handle different battery sizes, a spring at the bottom pushes the smaller batteries up. Just make sure your battery type is in the supported sizes list, if it’s odd-sized
AmzFei: 10 bay battery charger for 18650 and other sizes
This charger got slots for 10 batteries of the type 18650 and various other sizes. This one does not however support 21700 batteries, which the brightest flashlights usually use. But if 18650 batteries or any other one on the supported list is the type you use, this charger will come in handy if you need to recharge a lot of batteries at once. The next two alternatives on the list, the 8 and 4 bay chargers do support 21700
- Has ten independent charging channels, Automatically select the optimum charge current, Supports 10-channel simultaneous independent charging without affecting
- The universal USB port battery charger, battery charger operating voltage is 4.2V, Can charge for different types of DC 3.7V cylindrical lithium batteries 26650, 18650, 17670, 18490, 17500, 17335, 16340 (RCR 123), 14500, 10440, 14650, 18350, 18500, rechargeable batteries. For use with IMR/Li-ion Rechargeable batteries only. Do not attempt to charge primary cells such as Alkaline, Zinc-Carbon, Lithium, CR123A, CR2, or any other unsupported chemistry
- Comes with a special charge and discharge management circuit. With multiple security protection settings, the charger can effectively prevent reverse, short circuit, overcharge, over-discharge, over-current damage to the battery, which makes users using the product without any safety concern
- This Battery charger with Red/Green led light display, And the charger will display the status of each rechargeable battery when charging, Automatically detects battery power status and displays charging progress, and automatically stops charging when complete
- 24 Hours service, 60 days free refund, 1-year free replacement. Lifetime maintenance, giving you 100% satisfaction and zero hassle returns guaranteed
Prices pulled from the Amazon Product Advertising API on:
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.
MiBoxer: 8 bay charger for the most common battery types
This 8 bay charger from MiBoxer supports both of the two most common flashlight battery types, the standard 18650 and the larger and more powerful 21700, as well as most other batteries. The 21700 batteries are mostly used in bright flashlights, while the 18650 is used for a variety of other products than flashlights too. Detailed LCD screen let’s you see how the charging progress is coming along. Great choice if you often charge lots of batteries of various types. If not, you can proceed to the 4 bay charger below
- Compatible with: Li-ion4.20V / 4.35V / IMR / INR / ICR / LiFePO4:10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650,14350, 14430, 14500, 14650, 16500, 16340 (RCR123), 16650, 17350, 17500,17650, 17670, 18350, 18490, 18500,18650, 18700, 20700, 21700, 22500,22650, 25500, 26500, 26650,Ni-MH/Ni-Cd(1.48V): A, AA, AAA, AAAA, C, SC
- The C8 smart chargers compliant standard UL EMC FCC LVD CE ROHS, and with intelligent circuits, fire retardant materials. It can charge simultaneously rechargeable batteries of different specifications
- 8 bay can set the single-channel charging current up to 1.5A. Automatically or manually select the optimum charge current, supports 8-channel simultaneous independent charging
- LCD display automatically detects the battery and displays the charge status, measure battery resistance, detect batteries power percentage
Prices pulled from the Amazon Product Advertising API on:
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.
Nitecore: 4 bay charger for the most common battery types
This is a great choice if you don’t need to do much charging all the time. I have this one myself that I use for my 18650 batteries, usually I only recharge 2 at the same time, but some times I run out of juice on all 4 backup batteries, so then it’s nice to have a quad charger. The batteries are recharged quickly and the LCD displays show the current power level of the batteries. This charger also supports 21700 size batteries, as well as a pile of other battery types, including the common AA-AAAA ones, as long as they are rechargeable
- One of the quickest USB powered universal intelligent battery chargers, allows for on the go worldwide portability
- Quick Charge 2.0 integrated max single slot output of 3000mA charging allows for incredibly fast charging speeds with the appropriate compatible adapter
- Automatic detection of battery power level and automatic selection of the appropriate voltage and charging mode
- Li-Ion nattery restoration and keep your batteries safe with an added battery case
- Li-Ion, IMR, LiFePO4: 10440, 14500, 14650, 16500, 16340(RCR123), 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 25500, 26500, 26650, 26700 Ni-MH/Ni-Cd: AA, AAA, AAAA, C, D
Prices pulled from the Amazon Product Advertising API on:
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.
Snado: 2 bay charger for 18650 and other battery types
The last one on the recommended battery chargers list is the 2 bay charger from Snado. If you only have one or two 18650 batteries and don’t need to recharge them often, this one should be enough for your use and it won’t take up as much room as the other chargers above. This one does not support 21700 batteries thou, 18650 is the largest supported size, so if you need support for that, check out the 4 and 8 bay chargers
- Adopt negative voltage control technology to improve charge efficiency and integrated intelligent power management system
- High definition LCD displays real-time charging status. Two sets of led indicators show independently when charging, making the charging process visible
- Temperature protection: Stop charging automatically if the temperature of charger or battery gets too high when charging
- Compatible for Li-ion batteries 18650 18490 18350 17670 17500 16340(RCR123), 14500 Ni-MH/Ni-Cd A AA AAA batteries and 3.7V lithium battery and so on
- 30 days free refund, 2 years free replacement, lifetime maintenance
- Adopt negative voltage control technology to improve charge efficiency and integrated intelligent power management system;
- High definition LCD displays real time charging status, Two sets of led indicators show independently when charging, making the charging process visible status and stopping once completing charge intelligently;
- Temperature protection: Stop charging automatically if the temperature of charger or battery gets too high when charging. Stainless steel rail is more durable and smooth. Worldwide voltage, suitable for the whole world, car adapter is available;
- Compatible for Li-ion batteries 18650 18490 18350 17670 17500 16340(RCR123), 14500 Ni-MH/Ni-Cd A AA AAA batteries and 3.7V lithium battery and so on
- 30 days free refund, 2 years free replacement, lifetime maintenance
Prices pulled from the Amazon Product Advertising API on:
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.
