1. Service out-put(load characteristics) |
Continuous discharge, E.P.V:2.0V, Temp.:20¡¾2¡ÆC |
Load | 5.6kW | 50kW | 2000hours | 690days |
|
|
2. Service out-put(Temperature characteristics) |
5.6kWcontinuous discharge, E.P.V.:2.0V |
Temperature | -20¡ÆC | 20¡ÆC | 60¡ÆC | 1200hours | 2000hours | 1860hours |
|
|
3. Storage characteristics at high temperature(60¡ÆC, ordinary humidity) |
Item | Storage periods | Initial | after 40 days | after 80 days | Off-load-voltage (V) | 3.23 | 3.29 | 3.30 | Internal resistance (W) | 6.5 | 10.3 | 11.1 | Leakage (pcs) | - | 0 | 0 | Service Out-put at 5.6kW Continuous discharge (hours) E.P.V.:2.0V | 2000 | 1920 | 1900 |
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 for 80minutes. (temp.:20¡¾2¡ÆC) |
|
|
5. Over-discharge characteristics |
Test method | Test result | The discharge is further continued for 20days at 5.6kW load after the voltage has become less than the end-point voltage(2.0V) | Appearance:No change |
|
|
6. Charge characteristics |
Charge current | Charging time | Test result | 1.3mA | 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) | 3.23 | 3.29 | Internal resistance (W) | 6.5 | 9.6 | 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) | 3.23 | 3.23 | Internal resistance (W) | 6.5 | 6.5 | Leakage (pcs.) | - | 0 |
Average of 10 batteries Measurement of internal resistance is done by 1kHz alternating current. |
|