| Item | Condition | Specification |
| Nominal capacity | Std. Charge/discharge(Refer to 6.2.1 and 6.2.2) | 2500mAh |
| Energy | for reference only | 9Wh |
| Nominal Voltage | / | 3.6V |
| Standard Charge | Constant Current Constant Voltage End Condition |
0.5C(1250mA) 4.2V 50mA |
| Max. Charge Current |
4.2V | |
| Max. Charge Current |
1.0C（2500mA） | |
| Standard Discharge | Constant Current End Voltage |
1.0C(2500mA) 2.75V |
| Max.Discharge Current | 2.0C(5000mA) | |
| Cycle life |
500cycles≧90% of Initial Capacity. Or 1000cycles ≧80% of Initial Capacity | |
| Cell Weight | ≦45g | |
| Cell Dimension | Height: Max 65.3mm Diameter:Max 18.55mm |
|
| Crading specification | Capacity OCV ACR |
30mAh 8mV 4MΩ |
| Operating Temperature |
Charge | 0 to 45℃ |
| Discharge | -20 to 60℃ | |
| Protection rating | IP34 | PCS room |
| Storage Temperature （40%SOC) |
1 month 3 month 1 year |
-20℃ ~ 60℃ -20℃ ~ 45℃ -20℃ ~ 25℃ |
| Item | Condition | Specification |
| Initial AC Impedance | Cell shall be measured at 1kHz after charge per 6.2.1 |
≦30mΩ |
| Initial Capacity | Call shall be charged per 6.2.1 and discharged per 6.2.2 within 1h after full charge. | ≧2500mAh |
| Cycle life @25℃ | 90% of Initial Capacity. Or 1000cycles ≧80% of Initial Capacity. |
|
| Discharge Capacity under different temperature | After being charged per 6.2.1, respectively, set at -20℃, 0℃,25℃ placed no less than 24h, at 40℃, 55℃ for 5 hours, discharge at 0.2C to 2.75V(-20℃ discharge to 2.2V). |
Discharge capacity/ initial capacity -20℃≧70% 0℃≧80% 25℃≧98% 40℃≧96% 55℃≧95% |
| Discharge Rate Characteristics |
Under the condition per 6.1, charge the cell per 6.2.1, rest 10min, respectively discharge at 1C, 2C, 3C to 2.75V, record capacity. |
Discharge capacity/ initial Capacity 1C: ≧100% 2C: ≧94% 3C: ≧90% |
| Charge Rate Characteristics |
Under the condition per 6.1, respectively charge the call at 1C, 2C CV to 4.2V cut off at 0.02C, rest 10min, discharge at 1C to 2.75V, record capacity. | 1C Charging capacity ≧90% Initial capacity 2C Charging capacity ≧80% Initial capacity |
| Item | Condition | Specification |
| Drop test | Cells charge per 6.2.1 are dropped onto an oak board from 1.5 meter height for 1 cycle, 2 drops from side of cell. (Total number of drops =4). |
No explosion, No fire, No leakage |
| Vibration test | Cells charged per 6.2.1 are vibrated for 90 minutes per each of the three mutually perpendicular axes (x, y, z) with total excursion of 0.8mm, frequency of 10Hz to 55Hz and sweep of 1Hz change per minute. |
No explosion, No fire, No leakage |
| Item | Condition | Specification |
| Storage Characteristics |
Initial capacity was got according to 6.2.1 and 6.2.2, then charge the cell per 6.2.1, store it under room temperature for 28 days, then check its remaining capacity per 6.2.2; test its recovery capacity according to 6.2.1 and 6.2.2. |
Remaining capacity ≧ 95% of Initial capacity Recovery capacity ≧98% of Initial capacity |
| High temperature storage characteristics | Initial capacity was got according to 6.2.1 and 6.2.2, then charge the cell per 6.2.1, store it under 55℃ for 7 days, then check its remaining capacity according to 6.2.1 and 6.2.2. |
Remaining capacity ≧85% of Initial capacity Recovery capacity ≧90% Initial capacity |
| High temperature storage | Initial capacity was got according to 6.2.1 and 6.2.2, charge the cell per 6.2.1, discharge at 1C for 30min at RT, then store it under 45±2℃ for 28 days. Put it under RT for 5h, discharge at 1C to 2.75V. Get the recovery capacity according to 6.2.1 and 6.2.2. |
Recovery capacity ≧90% Initial capacity |
| Item | Condition | Specification |
| Over Charge |
Cells charged per 6.2.1 are discharged at constant current of 1.0C for 90min, observe for 1h. |
No explosion, No fire, No leakage |
| Over Charge |
Cells charged per 6.2.1 are charged at constant current of 1.0C until 6.3V or for 1h, observe for 1h. |
No explosion, No fire |
| External short |
Cells charged per 6.2.1 are externally shorted by wire with less than 5mΩ load for 10min, observe for 1h. |
No explosion, No fire |
| Heating test |
Cells are charged per 6.2.1 and heated in a circulating air over at a rate of 5℃ per minute to 130℃. At 130℃, over is to remain for 30 minutes before test is discontinued; observe for 1h. |
No explosion, No fire |
| Crush | Cells charged per 6.2.1 are crushed with their longitudinal axis parallel to the flat surface of the crushing apparatus; observe for 1h. |
No explosion, No fire |
| Seawater immersion | Cells charged per 6.2.1 are emerged into NaCl solution（concentration 3.5%) for 2h; observe for 1h. |
No explosion, No fire |
| Temperature shock |
Cells charged per 6.2.1 are put into the test chamber, undergoing the following test procedure for 5 cycles:-40℃(3.5h)→25℃ (3.5h)→85℃(6.83h)→25℃(8h), observe for 1h. |
No explosion, No fire |
| Low air pressure |
Cells charged per 6.2.1 are put into the test chamber, adjust the pressure to 11.6kPa for 6h, RT, observe for 1h. |
No explosion, No fire, No leakage |
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