4000mAh INR21700 40T Rechargeable 18650 3.6V Lithium ion Cell Cylindrical Long Cycle Life High Capacity li ion battery 3.7v

Item

Specification

Standard discharge capacity

Min. 4,000mAh
- Charge: 0.5C(2A), 4.20V, 0.05C(200mA) cut-off
- Discharge: 0.2C(800mA), 2.5V cut-off

Rated discharge capacity

Min. 3,900 mAh
- Charge:1.5C(6A), 4.20V, 0.025C(100mA)cut-off
- Discharge: 10A, 2.5V cut-off

Nominal voltage

3.6V

Standard charge

CCCV, 2A, 4.20 V, 200mA cut-off

Rated charge

CCCV, 6A, 4.20 V, 100mA cut-off

Charging time

Standard charge : 180min / 200mA cut-off
Rated charge: 70min / 100mA cut-off

Max. continuous discharge

35A(at 25℃)

Discharge cut-off voltage

2.5V (End of discharge)

Cycle life

Capacity ≥ 2,400mAh @ after 250cycles
(60% of the standard capacity)
- Charge : 6A, 4.20V, CCCV 100mA cut-off
- Discharge: 35A , 2.5V cut-off, with 80℃ T-cut

Retention characteristics

Capacity recovery(after the storage) ≥ 3,510 mAh
(90% of the rated capacity )
- Charge : 6A, 4.20V, CCCV 100mA cut-off
- Storage : 30 days ( 60℃)
- Discharge : 10A , 2.5V cut-off

Cell weight

70.0g max

Cell dimension

Height : Max 70.30mm
Diameter : Max 21.22mm

Operating temperature: (Ambient)

Charge : 0 to 45℃ Discharge: -20 to 60℃

Operating temperature: (Surface)

Charge : 0 to 50℃
(recommended recharge release < 45℃)
Discharge: -20 to 80℃
(must re-discharge release < 60℃)

5 Storage temperature:
(Recovery 90% after storage)

1 year 0~25℃
3 months 0~45℃
1 month 0~60℃

Note

1. Protection function of the battery pack should be set within the specified charge, discharge and temperature range in the Cell
Specification.
2. Discharge OTP(over temp. protection) should not be over 80℃ of the cell surface temperature. Protection set should be based on the location of the cell surface with the highest temp increase part of the battery pack.
3. If the cell is kept as ex-factory status (30% of charge), the capacity recovery rate is more than 90%

1 Low MOQ

It can meet your promotion business very well.

2 OEM Accepted

We can customize logo print on products, package and manual, etc.

3 ODM Accepted

We have Structure engineers and electronic engineers, CNC lathe, milling machine. Welcome to customize your design products

4 Good Services

Focus on the demand of customers

5 Good Quality

Unique Bmax original manufacture, 100% tested in production

6 Fast Delivery

Sample order: 1-2days
Small order: 2-3days
OEM order: 3-5days
ODM order:10-12days

7 Warranty period

All our products enjoy warranty period. For battery, 6 months, for charger, 12months.