NA21700-2500（3C）
Product usage: electric tools, low-speed two wheeled vehicles
Product advantages: good low-temperature performance, high safety, long cycle life
Basic characteristics
|
No.序号 |
Item 项目 |
General parameter 常规参数 |
Remark 备注 |
|
1 |
Can Material 壳体材质 |
Ni-plate Steel 镀镍钢壳 |
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2 |
Nominal capacity 标称容量 |
2500mAh |
Charge：0.5C5A,4.0V，CC CV 0.02C5ACut-off, Discharge：0.5C5A,2.0V dischargecut-off |
|
3 |
Minimum capacity 最小容量 |
2450mAh |
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4 |
Nominal voltage 标称电压 |
3.1V |
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5 |
Maximum charge voltage充电最高电压 |
4.00±0.025V |
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6 |
Discharge cut-off voltage放电截止电压 |
2.0±0.05V |
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7 |
Maximum continuous charge current 最大持续充电电流 |
1C5A |
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8 |
Maximum continuous discharge current 最大持续放电电流 |
3C5A |
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9 |
Maximumpulse discharge current 最大脉冲电流 |
25A |
20ms |
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10 |
Internal impedance 内阻 |
≤25mΩ |
Measured at AC1KHz of 50%DOD 半电态下交流1KHz测量 |
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11 |
Battery weight 电池重量 |
Approx.56g 约56g |
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12 |
Battery diameter (d) 电池直径 |
21.3±0.2mm |
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13 |
Battery height (h) 电池高度 |
70.5±0.3mm |
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14 |
Chargemethod 充电模式 |
CC-CV(Cut-off Current 0.02C5A) 恒流恒压，截止电流0.02C5A |
CC/CV |
|
15 |
Rapid charge 快速充电 |
标准充电：0.5C5A Standard charge：0.5C5A 快速充电：1C5A Rapid charge：1C5A |
CC/CV |
|
16 |
Standard discharge 标准放电 |
Standard dischargeConstant Current 0.5C5A,Cut-off Voltage 2.0±0.05V 标准放电持续电流0.5C5A，截止电压2.0±0.05V Max Constant Current 3C5A,Cut-off Voltage 2.0±0.05V 最大持续电流3C5A，截止电压2.0±0.05V |
CC |
|
17 |
Operation temperature（Cell surface temperature） 工作温度 （电池表面温度） |
Charge/充电温度：-10℃～50℃ Rechargerelease/恢复充电温度：≤45℃ |
At 60±25%RH |
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Discharge/放电温度：-40℃～60℃ Re dischargerelease/恢复放电温度：≤50℃ |
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18 |
Storage temperature 储存温度 |
Less than 3 months：-20～45℃ Less than 1 year：-20～25℃ 小于3个月：-20～45℃ 小于1年：-20～25℃ |
At 60±25%RH |
Battery performance
|
No.序号 |
Test Item 检测项目 |
Test Method 测试方法 |
Test Standard 检测标准 |
|
1 |
Normal temperaturedischarge performance 常温放电性能 |
Standard charge,then rest for 10min and discharge at 0.5C5A、1C5A、3C5Arespectively. 电池标准充电后，搁置10min，然后分别以0.5C5A、1C5A、3C5A放电。 |
Discharge capacity/First cycle capacity×100% 放电容量/首周容量×100% 0.5C5A≥100% 1C5A≥98% 3C5A≥95% |
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2 |
Normal Temperature Storage 常温荷电保持能力 |
Store for 28days after standard charge,then discharge at 0.5C5A to 2.0V; Then standard charge/discharge cycle for 3times to obtain the recoverable capacity. 电池标准充电后，开路放置28天，然后标准0.5C5A放电至2.0V。再以标准充放电三次测试电池的恢复容量。 |
Residual capacity≥First cycle capacity×85%Recoverable capacity≥First cycle capacity×92% 剩余容量≥首周容量×85% 恢复容量≥首周容量×92% |
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3 |
Cycle Life 循环寿命 |
The cell is charged at 1C5A, and discharged at a constant current of 3C5A, then stored 10 min. After 1000charge-dischargecycles the residual discharge capacity is above 70% of first capacity under rate discharge (3C5). 将电池进行1C5A充电、3C5A放电循环1000次，电池残余容量≥70%*倍率放电下的首周容量 (3C5)。 |
≥1000cycles (Charge:1C5A,4.0V,CC CV 0.02C5ACut-off, Discharge:5C5A,2.0V dischargeCut-off ) |
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4 |
Storage Characteristics 储存性能 |
Stored for 12 months in room-temperature at 50%DOD.Cell shall be conducted standard charge/discharge cycle for 5 times to obtain the recoverable capacityafter storage. 电池在50%放电深度条件下室温储存12个月后，以标准充放电循环5次，测试电池的恢复容量。 |
Recoverable capacity≥First cycle capacity×90% 恢复容量≥首周容量×90% |
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5 |
Discharge temperature Characteristics 放电温度特性 |
Standard charged in normal temperature,stored atthe following temperature for 3h,then discharged at constant currentof 0.5C5A. 常温条件下电池标准充电后，电池在放电温度环境中放置3h，然后测试0.5C5A放电的容量。 |
Discharge capacity/First cycle capacity(25℃)×100% 放电容量/首周容量(25℃)×100% -30℃ ≥85%（1.5V） 25℃ ≥100% 55℃ ≥95% |
