7.4v 4000mah 18650 li ion rechargeable battery pack

Model

TW-744000

Nominal voltage

7.4V 

Nominal capacity

4000mAh

Size

length × width × high (mm)

L40*W40*H70MM(with PCM)

Advantage

High energy density

Safety and reliable(with PCM)

Long cycle life

no memory

Never explosion,stable performance,environment friendly

capacity and size could be customized

Weight

about 95g

Max charge current

0.5-1C

Max discharge current

1-2C

Operating environment

Charging, 0°C ~ 45°C ; 65±20%RH 

Discharging, -20°C~60°C ; 65±20%RH

Storage environment

-20°C~45°C

65±20%RH

storage for a long time(>3 months) and 

the storage condition shall be:<35°C;65±20%RH;

CycleLife
(80% Prime Capacity) :

Over 500times   

Charging Attention

Charging current and charging voltage 

should be less than specified in the Product Specification.

The charger shall be designed to comply with Specification.

It is dangerous that charging with higher current or voltage 

than Product Specification may cause damage to the cell electrical,

mechanical safety performance.

Battery Cell

18650 cell or other Brand 18650 cell

PCB Safety Function

Cell balancing,Over-discharge,Over current protection, 

Over-charge,Temperature protection,Secondary protection.