10 Best Li Ion 21700 Protected Battery In The Us - Black Friday 2024
Button Top 3.7V 5000mAh Lithium-ion Rechargeable Battery Type-C Input/Output Protection Circuit Built-in Large Capacity 3.6V Replacement Battery for LED Flashlight, Headlamps etc(2 Pack)
Main highlights- 【Secure and Reliable】The highest quality, the happiest customer. LBF Protection Circuit Built-In Battery features six types of protection, including temperature, short circuit, overcharge, and overcurrent protection.
- 【Rechargeable 1000+ Times】 A single 3.6 Volt rechargeable battery can recharge up to 1000 charging and discharging cycles and no memory effect. Replace 1000+ disposable alkaline batteries, reduce the waste of resources and good value for the money.
- 【Large Capacity】 LBF 3.7V battery with a capacity of 5000mAh and voltage of 3.7V, high capacity battery with low self discharge rate, high power consumption, high energy density and pollution-free design, No need to charge batteries frequently.
- 【Battery Specification】Battery type: Button Top PCB Protection Circuit Built-In, Capacity: 5000mAh(5Ah), Wh Rating: 18.5Wh, Voltage: 3.7V, Size: 21.5*75.2mm(0.85*2.96 inches), Feature:Type-C Input/Output, Quantity: 2 Pack. This product is NOT sold with restricted lithium-ion standalone batteries. This product does NOT include lithium-ion battery types: 14500, 16340, 18650, 20700, 21700 and 26650
- 【Applicable Device】LBF 21C70 lithium ion battery for led flashlights, headlights, bicycle lights, emergency lights, work lights, loudspeakers, Instrumentation. The USB-C Input/Output battery can be used as an emergency power bank to charge your phone or other devices. It's 21.5*75.2mm, not 21*70mm. Please check whether it is the battery you need before purchasing.
9.7Exceptional
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Value for Money2
MLGBDCMLGBDC 2PCS 21700 5000mAh Rechargeable Battery and Charger,3.7Volt High Capacity,21700 Battery for Strong Flashlight and Other Electronic Devices.
Main highlights- 【Safety Protection】This product provides 6 types of protection, such as temperature protection, short circuit protection, overcharge protection to stabilize the batter
- 【Product size】70*21*21mm (2.76*0.83*0.83 inch),21700 3.7V batteries.
- 【Multi-Application】21700 5000mAh Rechargeable Battery for headlamps, flashlights, doorbells,alarm clock,toys and other necessary devices
- 【High Performance】With a large capacity of 5000mAh 21700 rechargeable batteries can last at least 20% longer than other batteries, perfect replacement battery for used devices with high frequency
- 21700-5000mAh flat top rechargeable battery with charger , Please pay attention to the size before you buy.
9.6Exceptional
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3
CBJJCBJJ 21700 Rechargeable Battery, 3.7 Volt 21700 Battery 5000mAh Flat Top 21700 Li-ion Battery for Flashlight (2 Pack, Black)
Main highlights- Wide Compatibility: These rechargeable 21700 batteries are widely used in various devices, including flashlights, headlamps, path-lights, doorbells , power banks and more. Portable & lightweight items for home use and outdoor use. NOTE: Please fully charge the products before use
- Warm Service: All of products have passed strict testing for normal use. If you have any question, please feel free to contact us, we'll reply email ASAP
- Product Dimensions: 71*21*21 mm(2.80*0.83*0.83 inch). NOTE: This is 3.7v 21700 battery, please refer to the images to confirm the battery model and battery size to select the appropriate battery before purchase
- Multiple Protections: This 3.7v 21700 rechargeable battery is without any memory effect and provide multiple protections,including short circuit, overcharge, and overcurrent protection. Prefectly make the battery to be more stable and safe to protect your devices
- High Performance: This 3.7v 21700 li-ion battery is with 5000mAh large capacity which supports stable power for your devices and effectively prevents damage of the devices, such a perfect replacement battery for used devices with high frequency
9.5Excellent
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4
EcoSolutionsEcoSolutions 21700 Rechargeable Battery Case Set, 2pack 5000mah Large Capacity 3.6Volt 21700 Tip Battery for flashlights ect,
Main highlights- Widely Compatible: 5000mAh 21700 Rechargeable battery large capacity,Which can be widely used for electronic devices, such as LED flashlights, emergency lights, portable devices, headlights, toys, remote controls, etc.
- Reliability and Durability: High-quality manufacturing processes and materials ensure the stability and durability of it, allowing them to perform exceptionally well in various environments and usage conditions.
- Product Size: 21*21*70 mm (0.82*0.82*2.75 inches),it's a 3.6 volt rechargeable battery, please check carefully before purchasing !).Please confirm whether the battery model required by your device.
- Large capacity: 21700 battery With a capacity of 5000mAh and voltage of 3.6v battery, high capacity battery with low discharge rate, high power consumption, high energy density and pollution-free design, No need to change batteries frequently.
- Enjoy our warm after-sales service: If you encounter any issues, don't hesitate to reach out to us. We're committed to resolving them for you promptly.
9.2Excellent
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5
CWUUCWUU 3.7V 21700 Rechargeable Battery, 5000mAh 21700 Battery Rechargeable 21700 Li-ion Battery for Flashlights, Toys & More, 2 Pcs
Main highlights- Wide Compatibility: 3.7 volts 21700 rechargeable battery can be widely well-suited for LED flashlights, healamps, solar lights, emergency lights, doorbells, toys, game controller, remote controls and other electronic devices
- Safe Protections: Rechargeable 3.7v battery can be cycled more than 1000 times with no memory effect. Designed with multiple safety features, including over-charge, over-discharge, over-heat and short-circuit protection.Premium Li-ion cells for longer battery life
- Quality Service: If you have any questions about ours products, please feel free to contact us, we will provide you with professional solutions and satisfactory services as soon as possible.
- Product Parameters: Product size: 2.80*0.82inch (71*21mm). Please carefully confirm whether your device is suitable before purchasing
- 5000mAh High Capacity: 3.7V li-ion 21700 battery is with 5000mAh high capacity that can provide stable voltage and long-lasting battery life for long term use in lots of devices
9.1Excellent
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6
AFSONGOOAFSONGOO 21700 Rechargeable Battery, 3.7 Volt 2 Packs 21700 Battery Flat Top 21700genuine Li-ion Battery for Flashlight
8.9Very Good
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7
HWHW 3.7V USB Rechargeable Lithium Batteries, Reliable True 3500 mAh (13000mWh) 18m Long-Lasting High Performance Battery, for Flashlights, Headlamps, RC Cars (2 Pack)
Main highlights- [Environmentally Friendly Rechargeable 3.7v Battery] As a professional battery manufacturer, HW always adheres to the research and development of efficient and energy-saving rechargeable batteries. Compared to alkaline batteries, rechargeable batteries have over 1200cycles, low self discharge, and constant voltage, providing more stable power supply to devices. Recyclable charging for use, saving expenses and reducing environmental pollution.
- Safety Assurance - built-in integrated safety circuit protects battery from over-charge, over-discharge, short-circuit and over-heat, ensures complete safety for the battery charging
- Reliable True Capacity 3500 mAh: HW 3.7V 18mm Rechargeable Battery provide actual 3500mah capacity, long-lasting and reuseable. Those batteries that claim to exceed 5000mah, their actual capacity will be much lower.
- Note:The batteries were only precharged 50%-60% of capacity - Please fully charge the batteries when you get it, new battery can achieve the best performance after experiences 3-5 cycles of charge & discharge.
- Note: THE BATTERY IS BATTOM TOP TYPE, , size is 70MMX 18.5MM, slightly longer than a regular 3.7V battery due to its higher capacity. Please check if your device is compatible with the battery. HW usb rechargeable batteries- 3.7V lithium batteries used for flashlight, toys, headlamps and other household devices. This product is NOT sold with restricted lithium-ion standalone batteries. This product does NOT include lithium-ion battery types: 14500, 16340, , 20700, 21700 and 26650
- High performance - HW 3.7V Li-ion batteries with 3500mAh capacity, support stable 3.7volt output voltage, makes the devices work more stable and lasting longer, great replacement batteries for high frequently used devices.
- Built-in micro USB port - easy to charge with the included 2 in 1 USB cable, no additional battery charger required, just plug into any USB port at anytime and anywhere, more than 1200 cycles, eco-friendly and save money.
8.8Very Good
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8
CPZZCPZZ 3.7v 21700 Battery Rechargeable 5000mah Large Capacity 3.7Volt 21700 Rechargeable Battery for flashlights ect,2pack 3.7v Battery 1009
Main highlights- Widely Compatible: 3.7 volt 21700 Rechargeable battery for flashlights, headlights, this 3.7v battery is highly portable, making it convenient for travel, camping trips.
- Product Size: 21*21*70 mm (0.82*0.82*2.75 inches),it's a 3.7 volt rechargeable battery, please check carefully before purchasing !!!).Please confirm whether the battery model required by your device.
- Multiple Protections:This 3.7v Rechargeable battery features six types of protection, including temperature, short circuit, overcharge, and overcurrent protection. These features ensure the battery remains stable and your device stays protected at all times.Please fully charge the battery before the first use, the battery will work better. Charge up to 1000 times without frequent battery changes.
- High-quality service: Every product is inspected before shipping! If you encounter any problems during the purchase process, please feel free to contact us.
- High performance product: 21700 battery With a capacity of 5000mAh and voltage of 3.7v battery, high capacity battery with low discharge rate, high power consumption, high energy density and pollution-free design, No need to change batteries frequently.
8.7Very Good
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9
CWUUCWUU 21700 Rechargeable Battery 3.7V Li-ion Cell 5000mAh Large Capacity for Headlamp, Flashlight 241012-2 (2 Pack)
Main highlights- Warm After-sales Service: If you have any problems, please feel free to contact us. We will solve the problem for you ASAP.
- Versatile Battery - 3.7 volt rechargeable battery 21700 is versatile and can be used for a variety of electronic devices, including LED torches, portable devices, headlights, toys and other household appliances.
- Size: 70mm x 21mmx 21mm(2.75*0.82*0.82 inches) ; Battery must be FULLY charged before first use.
- Environmentally Friendly - 21700 rechargeable battery supports multiple charging and discharging cycles without memory effect, 1 pack rechargeable battery is equivalent to 1000 packs disposable batteries. Designed with multiple protection functions, such as over-charging, over-discharging and short-circuit protection, to ensure safe and reliable use.
8.6Very Good
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10
DQGGDQGG 3.7 Volt 21700 Rechargeable Battery 5000mAh Battery 2 Pack Large Capacity Batteries for LED Flashlight, Headlamps, etc
Main highlights- 【Wide Application】5000mAh rechargeable battery, compatible with flashlights headlamps, etc. This kind of battery is bigger than most of batteries, please make sure you are buying the right ones.
- 【Product Advantage】No memory effect, they can be charged many times when fully or partially drained.
- 【Note】These are 21700 battery, please ensure that you are buying the right type of battery
- 【Content】You will get 2 pieces of 21700 batteries
8.5Good
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