Premium 21700 Lithium-ion Battery with USB-C Charging
High-capacity 5000mAh power for extended runtime in flashlights, camping gear, and emergency equipment. Built with Grade A lithium-ion cells for stable voltage output and 1000+ charge cycles.
Integrated USB-C port enables direct charging without external adapters—ideal for outdoor use and travel. Precision laser welding ensures durable contacts and corrosion-resistant terminals.
OEM support with customizable branding options for bulk buyers. CE/RoHS certified for safety. Compatible with high-lumen flashlights, power banks, and DIY electronics projects.
Wholesale pricing available for bulk orders. Ships globally with DDP (Duty Paid) options.












Recent Purchase
smc***
Nominal Voltage:3.7V;Nominal Capacity:5000mAh;Battery Type:cylindrical;
$169.62
48 days ago
zee***
Nominal Voltage:3.7V;Nominal Capacity:5000mAh;Battery Type:cylindrical;
$231.30
44 days ago
cii***
Nominal Voltage:3.7V;Nominal Capacity:5000mAh;Battery Type:cylindrical;
$277.56
48 days ago
sjy***
Nominal Voltage:3.7V;Nominal Capacity:5000mAh;Battery Type:cylindrical;
$231.30
1 day ago
cda***
Nominal Voltage:3.7V;Nominal Capacity:5000mAh;Battery Type:cylindrical;
$138.78
4 days ago
uur***
Nominal Voltage:3.7V;Nominal Capacity:5000mAh;Battery Type:cylindrical;
$231.30
21 days ago
hsr***
Nominal Voltage:3.7V;Nominal Capacity:5000mAh;Battery Type:cylindrical;
$77.10
7 days ago
pib***
Nominal Voltage:3.7V;Nominal Capacity:5000mAh;Battery Type:cylindrical;
$77.10
21 days ago
ofh***
Nominal Voltage:3.7V;Nominal Capacity:5000mAh;Battery Type:cylindrical;
$215.88
1 day ago
jjv***
Nominal Voltage:3.7V;Nominal Capacity:5000mAh;Battery Type:cylindrical;
$246.72
22 days ago
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Customer Reviews

Support OEM 21700 3.7V 5000mAh USB Lithium-ion Rechargeable Battery for Flashlight Large Capacity USB-C Port Battery
$9.76$15.42-36.71%
Nominal Voltage:
3.7V
Nominal Capacity:
5000mAh
Battery Type:
cylindrical
Quantity:
Add to Cart
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