1. Service out-put(load characteristics) |
Continuous discharge, E.P.V:2.5V, Temp.:20¡¾2¡ÆC |
Load |
4.7kW |
15kW |
30kW |
829hours |
3138hours |
6314hours |
|
|
2. Service out-put(Temperature characteristics) |
15kWcontinuous discharge, E.P.V.:2.5V |
Temperature |
-20¡ÆC |
20¡ÆC |
60¡ÆC |
1450hours |
3138hours |
3055hours |
|
|
3. Storage characteristics at high temperature(60¡ÆC, ordinary humidity) |
Item |
Storage periods |
Initial |
after 40 days |
after 80 days |
Off-load-voltage (V) |
3.237 |
3.276 |
3.279 |
Internal resistance (W) |
5.1 |
7.0 |
7.9 |
Leakage (pcs) |
0 |
0 |
0 |
Service Out-put at 15kW Continuous discharge (hours) E.P.V.:2.5V |
3138 |
- |
- |
Test temp.:20¡¾2¡ÆC, Average of 10 batteries | |
|
4. Short circuit characteristics |
(1) Temperature of battery surface |
(2) Change of off-load voltage after short circuit |
(3) Shape, Dimension, Appearance |
No change is recognized after 80minutes. (temp.:20¡¾2¡ÆC) | |
|
5. Over-discharge characteristics |
Test method |
Test result |
The discharge is further continued for 20days at 4.7kW load after the voltage has become less than the end-point voltage(2.5V) |
Appearance:No change |
|
|
6. Charge characteristics |
Charge current |
Charging time |
Test result |
0.68mA |
24hours |
Appearance:No change |
|
|
7. Heat shock test |
Range of temperature:-10~+60¡ÆC, Time:each for 1 hour |
Item |
Initial |
After 100 cycles |
Off-load-voltage (V) |
3.213 |
3.244 |
Internal resistance (W) |
4.7 |
4.6 |
Leakage (pcs.) |
- |
0 |
Measuring temp.:20¡¾2¡ÆC, Average of 10 batteries Measurement of internal resistance is done by 1kHz alternating current. Leakage proof is done by visual check. | |
|
8. Vibration test |
Amplitude:1.5mm, Frequency:10~55Hz, Time:X,Y,Z direction, each for 90 minutes |
Item |
Initial |
After 100 cycles |
Off-load-voltage (V) |
3.243 |
3.243 |
Internal resistance (W) |
4.9 |
5.0 |
Leakage (pcs.) |
- |
0 |
Average of 10 batteries Measurement of internal resistance is done by 1kHz alternating current. | |