Ni-Cd rechargeable battery

Test

Specification

Conditions

Remarks

Capacity

≥1940mAh

Standard Charge/Discharge

Up to 3 cycles

are allowed

Open Circuit Voltage(OCV)

≥1.25V

Within 1hr after standard charge

Internal Impedance (Ri)

≤25

Upon fully charge(1000HZ)

High Rate Discharge (0.5C)

≥108min

Standard Charge,

1hr rest before discharge

High Rate Discharge ( 1 C)

≥54min

Standard Charge,

1hr rest before discharge

Overcharge(N/A)

No leakage

nor explosion

200mA(0.1C) charge 28 days

Charge Retention

≥1200mAh

Standard Charge,

Storage:28 days,

Standard Discharge

IEC Cycle Test

≥500 Cycle

IEC 61951-1:2003

(see Note 3)

Test

Specification

Conditions

Remarks

Leakage

No leakage

nor deformation.

Fully charged at 650mA(0.5C),

Stand for 14 days

Unit cell

External Short Circuit

No fire and

no explosion.

After standard charge,

short circuit the cell(s) at

20+/-5°Cuntil the cell(s)

temperature returns to

ambient temperature

(The resistance of the

inter-connecting circuitry

shall not exceed 0.1ohm).

Unit cell

Vibration Resistance

Charge of voltage

Should be under

0.02V/cell,

Change of

impedance

should be under

5 milli-ohm/cell.

Charge the battery 0.1C

16hrs, then leave for

24hrs, check battery

before/after vibration,

Amplitude:1.5mm

Vibration:3000CPM

Any direction for 60mins.

Unit cell

Impact Resistance

Change of voltage

should be under

0.02V/cell,

Change of

impedance

should be under

5 milli-ohm/cell.

Charge the battery 0.1C16hrs,

then leave for 24hrs, check battery

before/after dropped,

Height:50cm

Wooden board (thickness 30mm)

Direction not specified 3times.

Unit cell