Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
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Li Ion 21700 Protected Batteries of 2025
Save up to 14% off
Best Choice1
MLGBDCMLGBDC 4 Pack 21700 Battery 5000mAh High Capacity 3.7volt Flat Top Li-ion Battery 21700 Rechargeable Battery
9.6Exceptional
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Value for Money2
JESSPOW21700 3.7V Rechargeable Battery with Charger 5000mAh Battery Large Capacity Batteries for Flashlight Headlamps Doorbells Toys etc（2 Pack Battery+Charger
9.3Excellent
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3
EcoSolutionsEcoSolutions 21700 Rechargeable Battery Case Set, 2pack 5000mah Large Capacity 3.6Volt 21700 Tip Battery for flashlights ect,
14% OffKey specs-
batteries:2 Unknown batteries required
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reusability:Rechargeable
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cell type:21700
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voltage:3.6v
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capacity:5000mAh
9.0Excellent
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4
SvenirvenSvenirven 21700 Battery, 2PCS 5000mah 3.6V 21700 Flat top Battery 21700 Rechargeable li-ion Battery Green with Battery Organizer
8.8Very Good
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5
JESSPOWJESSPOW 4 Pack 21700 3.7 V Rechargeable Batteries, 21700 Battery 5000mAh Flat Top Batteries for Flashlight, Headlamps, etc
14% Off8.7Very Good
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6
QimooQimoo Upgrade 21700 Lithium Battery 4500mAh with PH2.0mm Connector, 3.7V Rechargeable Battery Pack 1S1P Lithium Ion Batteries for DIY Electronics Products, Toys, Lighting, Bluetooth Equipment
8.6Very Good
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7
ImrenIMREN 18650 Battery Charger,21700 Battery Charger for 3.7V 14500 10400 18500 18350 18650 18700 20700 21700 22650 26650 Li-ion Battery,1.2V Ni-MH/Ni-Cd Battery,4 Bay 18650 USB C Charger
8.5Good
Our Rating
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8
EBLEBL 3.7V Li-ion Rechargeable Batteries 3000mAh 18J Rechargeable USB Lithium Battery for Flashlights, Headlamps, Doorbells, RC Cars (2 Pack)
8.4Good
Our Rating
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9
FUGASUN21750 21700 Battery Charger,LCD Intelligent 18650 Battery Charger for 20700 22700 26650 26700 16340 (RCR123) 17670 Rechargeable Battery with PCB Protection Board
8.1Good
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10
DQGGDQGG 3.7 Volt 21700 Rechargeable Battery 5000mAh Battery 2 Pack Large Capacity Batteries for LED Flashlight, Headlamps, etc
8.0Good
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