Circular LiPo Battery

1

Nominal Capacity

≥550mAh@ 0.2C

DischargeMin:530mAh

0.2Crate,3.0V cut-off

2

Nominal Voltage

3.8V

3

MAX Charge Voltage

4.35V

4

Discharge Cut-Off Voltage

3.0 V

5

Charge current

Standard charge： 0.2C

Rapid charge： 0.5C

6

Standard charging

0.2C CC （constant current） charge to

4.35V, then 4.35V CV(constant voltage)

charge till charge current decline to≤

0.02C

7

Discharge Current

Standard Discharge: 0.2C

Max Discharge:0.5C

8

Storage temperature

1 month： -10～45℃

6 month ： -10～35℃

20±5 ℃   is recommend long term storage temperature

         9

Weight

Approx: 12.0g

        10

Operating temperature

Charging  ： 0 ～+45  ℃，≤85%RH

Discharge：-10～+60  ℃，≤85%RH

＜0℃Charge shall be prohibited

       11

Cell Voltage

3.85 ~ 4.05V

As of shipment

1

Visual inspection

visual inspection

Not allowing any visual defects which will affect the electronic characteristics, such as leakage and damage.

2

Battery Dimension

Digital Calipers

Length：36.5mm Max Width：35.5mm Max Thickness：4.9mm Max

3

Initial Impedance

Internal resistance measured at AC 1KHz after 50-60% charge

≤300mΩ

4

Rated Capacity  

量

The capacity means the discharge capacity of the cell, which is measured with discharge current of 0.2C with 3.0V

cut-off  voltage    after  the  standard

≥530mAh

5

Cycle Life

Test condition：

The cycle times is not less than 300

Charge：0.2C to 4.35V

Discharge：0.2C to 3.0V

When the discharge capacity reduced to

70% of rated capacity, Stop testing

6

High Temperature

A charged battery is placed in an oven

Discharge 90 percent of the original capacity.

for 2 hours at 55ºC±2ºC, then discharged at a 0.2C current to the termination voltage.

7

Low

A charged battery is placed in a thermal

Discharge 60 percent of the

chamber for 4 hours at -10ºC±2ºC; then

discharged at 0.2C to the termination

Temperature

voltage.

original capacity.

8

Electricity maintenance

After the standard charging, storied the

Remaining capacity≥ 85%

cells under the condition as 205 ºC for

30days, then measured the capacity with

0.2C till 3.0V

1

Constant temperature    and constant humidity test

After      Standard     Charging,     test condition：

Temperature：40±2℃ Relative Humidity：90~95%RH Storage Time：48 hours

Then return to room temperature for 2 hours，Then 1C discharged to ending voltage

No  explosion ， no  fire ， no leakage.Dischargeing         capacity is not less than 60% original capacity

2

Vibration test

After Standard Charging, fixed the cell

No    explosion,    no    fire ， no leakage

to vibration table, then subjected to

vibration test for 30 minutes per axis of

XYZ axes. Frequency rate :1 oct/min

Vibration frequency : 10Hz-30Hz

Excursion(single amplitude): 0.38mm

Vibration frequency : 30Hz-55Hz Excursion(single amplitude): 0.19mm

3

Drop Test

A charged battery is dropped from a

No    explosion,   no   fire,    no leakage.

height of 1 meter two  times  onto  a concrete surface.