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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Battery 21700 Vs 18650 of 2025
Save up to 22% off
Best Choice1
JESSPOW21700 3.7V Rechargeable Battery with Charger 5000mAh Battery Large Capacity Batteries for Flashlight Headlamps Doorbells Toys etc（2 Pack Battery+Charger
9.6Exceptional
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Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you
Careful review Our team ensures quality, value, and fit based on real user feedback
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Value for Money2
MIEKLALE18650 Battery Charger, MIEKLALE 4-Bay Universal Battery Charger with Smart LCD Display Fast Charge for Rechargeable Batteries Li-ion Ni-MH/Cd LiFePO4 21700 26650 18650 16340 10440 AA AAA
22% Off9.3Excellent
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3
JESSPOWJESSPOW 4 Pack 21700 3.7 V Rechargeable Batteries, 21700 Battery 5000mAh Flat Top Batteries for Flashlight, Headlamps, etc
14% Off9.2Excellent
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4
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
9.1Excellent
Our Rating
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5
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
9.0Excellent
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6
DIVTEK18650 to 21700 Battery Adapter, Converter Adapter for 21700 Flashlight Cases with Metal Contacts 18650 Sleeve Batteries Protective 21700 Battery Adaptor Holder Accessories (2 Battery Converters)
8.7Very Good
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7
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
8.4Good
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8
TokeylaTokeyla 3.7 Volt 18650 Rechargeable Battery, 3000mAh Battery Flat Top Lithium Batteries for LED Flashlights, Headlamp (6 Pack)
8.2Good
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9
Swanlake18650 Battery Charger,Smart Lithium Fast Charge with LCD Display for 3.7v Li-ion Battery 18650 26650 21700 17500 14500 RC123A,1.2v NiMH AA AAA Batteries
7.9Good
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10
GenericGeneric 2 Pack 18650 5000mAh Rechargeable Battery 5000mAh Wiith 18650 Battery Charger, Universal Charger Single Slot for 3.7V Rechargeable Batteries 21700 14500 10440
Key specs-
Display Type:Red/Green LED light
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Battery Types:DC 3.7V cylindrical lithium
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Safety Features:Multiple protection settings
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Fast Charging:N/A
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Charging Slots:N/A
7.8Good
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