Test Item |
UL Test Procedure |
UL Criteria |
Vibration Test |
Cell status:4.2V (full charge)
A. Amplitude: 0.8mm
B. Frequency:10~55Hz(sweep:1Hz/min)
C. Direction: vibrated in three mutually perpendicular directions
for 90~100 minutes
|
90% (min) recovery capacity
No fire, no leakage
|
Thermal Shock
Test |
Cell status:4.2V (full charge)
A. Stored at 75 C 5 C for 48 hours
B. Then moved to -20 C 5 C within 5 minutes and stored for 6
hours
|
No fire, no leakage,
no explosion
|
Short Circuit
Test |
Cell status:4.2V (full charge)
A. Copper wire of resistance less than 50mohm
B. Short-circuited by connecting copper wire to positive and
negtative terminals of battery
|
No fire, no leakage,
no explosion |
Overchage Test |
Cell status:4.2V (full charge)
Charged at 1C/12V for 2.5 hours
|
No fire, no leakage,
no explosion
|
Thermal Exposure
Test |
Cell status: 4.2V (full charge)
A. Heated up at a rate of 5 C
B. Then moved to -20 C 5 C within 5 minutes and stored for 6
hours
|
No fire, no leakage,
no explosion
|
High Temperature
Test |
Cell status: 4.2V (full charge)
Leaving the battery at 90 C for 4 hours
|
No fire, no leakage,
no explosion
|
Drop Test |
Cell status: half charge
Dropped from 1.2m height onto 5cm or thicker concrete with
p-tile on it 3 times in each direction at 25 C 2 C.
|
No fire, no leakage,
no explosion |
Lithium Polymer Battery
