No

Items

Objective

Testing method

1

Ex-view

No dirt ,deforming or scratchy marks

Eye inspection

2

Capacity sustainability

capacity≥100AH

1Ccharge before 0.2C discharge

3

Instant discharge

capacity≥95%

3Ccharge before 3C discharge

4

Open circuit Voltage

3.2V plus

Test after standard charging for one hour

5

Life span test

1Cdischarge capacity: 2000 times≥80%

0.5Cdischarge capacity:3000 times≥70%

Repeatedly charge and discharge for 2000/3000 times to get test result at 2001st/3001st test as discharge capacity; standard charge：3.65V,1C/0.5C,charge at constant voltage and circuit with 5 mins intervals

discharge: 1C/0.5C under 2.0V

6

Over-charge feature

No leakage or bruise

After standard discharging, charge at 9C up to 10V for testing

7

Over-discharge feature

No leakage or bruise

After standard charging,  discharge at 1C up to 0V to test

8

Short-circuit

(safety test)

No bruise, flame ,smoke or leakage

After standard charging, short circuit the output“+” “-”5mΩ for 10min(25±2℃)

9

Capacity sustainability features

capacity≥90%,with no bruises on the exterior package material

After standard charging, discharge after 28 days（25±2℃）to calculate its capacity.

10

1mdropping test

No cracking or leakage and ≥3.2V,charge and discharge both normal

After standard charging, dropping test is followed by standard charging and discharging for capacity test

11

Vibration test

No cracking ,leakage or deforming, ≥3.2V,charge and discharge both normal

Test after standard charging and discharging and storage for 24 hours

Testing condition: amplitude4mm

Vibration frequency:1000cpm

Directions :x/y/z

12

Temperature features

No cracking, leakage or deforming, ≥80%

After standard charging, keep it for 1hr at 45±2℃ before discharging up to 2.0V.

13

Hi-temp feature

Capacity ≥90%

After standard charging, storage at 55℃±2℃ for 5hrs before discharging at 1C to get 2.0V

14

Lo-temp feature

Capacity ≥70%

After standard charging, storage at -20℃±2℃ for 20hrs before discharging to get 1.5V at 0.2C.

Charging temperature

0℃～45℃

Discharging temperature

-20℃～60℃

Hi-temp feature

After full charge, put the battery in a hot box (60±2) ℃ for 24hrs before a complete discharge at 1C5A for no longer than 45min,to get required discharge capacity with thickness ≤3%.

Lo-temp feature

After full charge, store it in lo-temp boxes (-20±2) ℃ for 16-24 hrs. discharge at 0.2C5A completely for no less than 3hrsto get ideal discharge capacity. No deform or cracking on the package

Constant wet/heat feature

After full charge, store it at (40±2) ℃ with 90%-95% moisture for 48 hrs and then place it at 20℃±5℃ for 2hrs to check its exterior view. Discharge at 1C5A completely for no less than 36min to get ideal discharge capacity and no deforming or cracking on the package.

Vibration test

After full charge, fix the battery on the platform to receive vibration in three directions  under the frequency of (10-55)Hz ,with amplitude of 0.35mm.Each of the X、Y、Z directions has 10times at the speed of 10ct/min. Make sure that no obvious exterior damage to the exterior view, no leakage or smoke or explosion happens and the voltage remains ≥3.2V.