No.

Item

Criteria

Remark

1

Lithium-ion Battery Cell

Li-18650-3.6V 3450(3300)

(NCR-18650GA)

2

PCM

N O

Battery type

(mm )Dimensions T*W*H(max)

(mm)Lead exposure

L

Terminal head direction

Immersion tin size

1

Li-ion Cylindrical

46.8*82.8*476mm

/

/

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No.

content

Testing method

Remark

1

Charge cut-off voltage

54.6V

2

Discharge cut-off voltage

32.5V

3

Standard charge

Under the condition of the ambient temperature of 25±2℃,Charge the battery at constant current of 0.2C to reach 54.6V. Then charge the battery at constant 54.6V voltage until the charging current decreasing to 0.02C.

4

Standard discharge

After the standard charging , rest for 1 hour then discharge to 32.5V@0.2C.

5

Shipments voltage

45.89-47.19V

≤30 %

6

Maximum continuous working current

≤15A

7

Rated capacity

Typical capacity:10.35Ah

Minimum capacity:9.9Ah-5%

standard discharge after standard charge

8

Operation temperature range

充电:10~45℃

60±25%R.H

放电:-20~60℃

9

Storage temperature

≤1 month: -20 ~ 45℃

60±25%R.H

Best 10~25℃ for long-time storage

≤3 months: -10 ~ 30℃

≤1 year: 0 ~ 30℃

10

Impedance

<280mΩ

11

Weight

Approx:≈2750g

No.

Items

Test Conditions

Requirements

1

Capacity retention

Fully charging, store them at (20±5)℃ for 28 days, then discharge to

32.5V @0.2C(The capacity is greater than 85% of the initial capacity).

Discharging time≥255min

2

Cycle Life @25℃

Discharge to 32.5V @0.2C, then Charge the battery @0.2C to reach 54.6V. Then charge the battery at constant 54.6V voltage until the charging current decreasing to 0.02C. Rest for 10 min. discharge to

32.5V@ 0.2C and rest for 10 min. Continue the charge/discharge cycles until discharge capacity lower than 70% of rated capacity.

Cycles life ≥300

3

storage

Charge the battery to 40%~65% of its rated capacity using standard charging mode, then keep it in an 20℃±5℃, humidity 45% ～ 85% room for 12 months, fully charge and discharge it @0.2C until voltage down to 32.5V.

(The testing sample should be within 3 months dated from production date)

Discharge time≥240min

No.

content

Testing method

Requirements

1

Vibration Test

After standard charging, put battery on the vibration table. 30 min experiment from X, Y, Z axis. Scan rate: 1oct/min; Frequency 10- 30Hz, Swing 0.38mm; Frequency 30-55Hz, Swing 0.19mm.

No influence to batteries' electrical performance and appearance.

Item

Content

Criterion

Over charge Protection

Over charge detection voltage

4.250±0.030V

Detection delay time

0.6±0.3S

Over charge release voltage

4.100±0.070V

Secondary protection detection voltage

4.300±0.030V

Secondary protection detection delay time

4±0.5S

Secondary protection release voltage

3.900±0.050V

Over discharge protection

Over discharge detection voltage

2.800±0.10V

Detection delay time

0.6±0.2S

Over discharge release voltage

3.000±0.100V

Maximum persistent current

≤15A

Over current protection

Over current detection current

50±5A

Release condition

Cut load

Detection delay time

290～630mS

Charging overcurrent

13.3±5A

Detection delay time

290～630mS

Short protection

Detection condition

> 100A 外部电路短路

280～660uS

Release condition

Cut short circuit

Charging low temperature protection temperature

-5℃±3℃