[新品] 小米九号平衡车电池(M9)

Items项 目

Parameter参 数

Battery model电池型号

M9电池/15S2P/54.3V/4.4Ah

Design scheme设计方案

Nominal voltage标称电压

54.3V

Shipment voltage出货电压

≥54.3V

Minimum capacity***小容量

4100mAh(0.2C discharge放电)

Typical capacity典型容量

4300mAh(0.2C discharge放电)

Charging voltage充电电压

63V

Standard charging标准充电

880mA/63V

Fast charging快速充电

2200mA/63V

Discharging cut-off voltage

放电截止电压

34.5V

Battery pack impedance

电池内阻

≤1000mΩ

No.

Items项 目

Test Method测试方法

Criteria标准

1

Standard Charge

标准充电

Charging the cell initially with constant current at

0.2Cand then with constant voltage at 4.2*nV till

charge current declines to 0.02C.

先以0.2C 恒流充电，当电芯电压达到4.2*nV 后，改为恒

压充电直到充电电流小于或等于0.02C。

N.A

2

Minimal Capacity

***小容量

The capacity means the discharge capacity of the

cell, which is measured with discharge current of

0.2Cwith 2.75*nV cut-off voltage after the standard

charge.

电芯满充电后，以0.2C 电流连续放电至2.75*nV 截止电压

所放出的容量。

≥4100mAh

3

Charge/Discharge

Cycle

充放电循环

The capacity on 0.5C discharge shall be measured

after 300 cycles Of 0.5C charge and discharge at 23

±2℃.

23±2℃条件下0.5C 充放电循环300 次。

Capacity≥70%

容量≥70%

4

Retention

Capability

荷电保持能力

After full charging, storing the battery 28 days with

20± 5°C condition , and then staying 1 hours with

discharge current of 0.2C till 2.75*nV cut-off voltage.

电芯满充电后，在20±5℃的环境条件下存放28 天，然后

以0.2C 电流连续放电至2.75*nV 终止电压。

Capacity≥85%

容量≥85%