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Electric wrench li-ion battery pack (18V 5S2P)
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Electric wrench li-ion battery pack (18V 5S2P)
Production specifications
| Item 項目 | Description 內容 | Remark 備注 |
| Rated capacity 額定容量 | 3000mAh | 0.2ItA discharging 放電 |
| Rated capacity 額定電壓 | 18V | |
| Charging method 充電方式 | CC/CV 恒流/恒壓 | |
| Changing voltage 充電電壓 | 21V | |
| MAX charging current 最大充電電流 | 2A | |
| Continuous discharging current 連續放電電流 | 15A | |
| IR difference of grouping 配組內阻差 | ≤2mΩ | |
| Operating working temperature 工作環境溫度 | Charing 充電：0℃～40℃； Discharging 放電：-10℃～60℃ | |
| Outgoing voltage 出廠電壓 | ≥18V | |
| Outgoging SOC 出廠時電池包荷電量 | 30% | |
| Battery pack IR 電池包的內阻值 | ≤120mΩ |
Electrical performance
| Item 項目 | Test method 測試方法 | Criteria 判定標準 |
| Standard charge 標準充電 | Charge at CC mode at 520mA until the pack voltage reaches 21V, change to CV charge mode, when the charging current is no higher than 75mA, stop charging. 以520mA恒流充電，當電壓達到21V後，轉為恒壓充電，充電電流小於或等於75mA時，充電結束。 | |
| Rapid charging 快速充電 | Charge at CC mode at 1300mA until the pack voltage reaches 21V, change to CV charge mode, when the charging current is no higher than 75mA, stop charging. 以2000mA恒流充電，當電壓達到21.4V後，轉為恒壓充電，充電電流小於或等於75mA時，充電結束。 | |
| Capacity 容量 | Rest the battery for 1 hour after being fully charged by standard charging mode. Keep discharging the battery at current of 520mA until protection is triggered off. 標準充電後擱置1小時，以520mA電流連續放電至電池組放電保護。 | Discharging time≥5hrs 放電時間≥5小時 |
| Capacity measured at 5C discharge 5C放電容量 | Rest the battery for 1 hour after being fully charged by standard charging mode. Keep discharging the battery at current of 15A until protection is triggered off. 快速充電後擱置1小時，以15A放電至電池組放電保護。 | Discharging time ≥ 10.8mins 放電時間≥10.8mins |
| Cycle life 循環壽命 | Leave the battery for 10 mins after being fully charged. Keep discharging the battery at current of 15A until the cut-off is triggered. Leave the battery for 45 mins before the next charging/discharging cycle, until the battery discharging capacity are below 80% of the nominal capacity. The test is over. 快速充電後擱置10min，以15A電流恒流放電至電池組受保護板過放保護無輸出，擱置45min，再進行下一個充放電循環，直至連續兩次放電容量低於額定容量的80%，試驗結束。 | No less than 200 cycles 循環次數不低於200次 |
| Battery balance 電池均衡 | Discharege one cell of battery pack at 20% capacity after standard charging the whole battery pack,then re-charging this single cell for 10 hrs by twice. 電池組標準充電後對電池組內某節單體電池放電20%容量，再進行兩次10小時的充電。 | Battery pack actual capacity is not lower than the rated capacity after testing. 試驗後電池組的實際容量不低於額定容量 |
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