High-capacity 21700 lithium-ion battery with 4000mAh/4Ah power, ideal for high-drain devices.
Precision-engineered INR21700-40P cell delivers stable 3.7V output for consistent performance.
Premium Li-ion chemistry ensures longer cycle life and enhanced safety for intensive use.
Ultra-high discharge rate (12.5C) perfect for FPV drones and power-hungry electrical tools.
Robust construction with precision welding and anti-leak design for reliable operation.
Global wholesale pricing with bulk discounts for commercial buyers and resellers.
Recent Purchase
dzg***
Nominal Voltage:3.7V;Nominal Capacity:4000mAh;Battery Type:cylindrical;
$125.80
32 days ago
ghp***
Nominal Voltage:3.7V;Nominal Capacity:4000mAh;Battery Type:cylindrical;
$62.90
2 days ago
qyk***
Nominal Voltage:3.7V;Nominal Capacity:4000mAh;Battery Type:cylindrical;
$18.87
9 days ago
thv***
Nominal Voltage:3.7V;Nominal Capacity:4000mAh;Battery Type:cylindrical;
$100.64
25 days ago
ikk***
Nominal Voltage:3.7V;Nominal Capacity:4000mAh;Battery Type:cylindrical;
$113.22
27 days ago
xwd***
Nominal Voltage:3.7V;Nominal Capacity:4000mAh;Battery Type:cylindrical;
$75.48
24 days ago
qhk***
Nominal Voltage:3.7V;Nominal Capacity:4000mAh;Battery Type:cylindrical;
$75.48
3 days ago
nhe***
Nominal Voltage:3.7V;Nominal Capacity:4000mAh;Battery Type:cylindrical;
$25.16
9 days ago
htd***
Nominal Voltage:3.7V;Nominal Capacity:4000mAh;Battery Type:cylindrical;
$125.80
6 days ago
ojl***
Nominal Voltage:3.7V;Nominal Capacity:4000mAh;Battery Type:cylindrical;
$44.03
4 days ago
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Customer Reviews
High Rate 12.5C 21700 40P 3.7V Li Ion Battery 3.7V 4000mah 4Ah 21700 Battery Cell INR21700-40P For FPV Drone & Electrical Tools
$4.7$6.29-25.28%
Nominal Voltage:
3.7V
Nominal Capacity:
4000mAh
Battery Type:
cylindrical
Quantity:
Add to Cart
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