Specification of 250H 2.4V with pin button NI-MH battery
1. BATTERY DRAWING (Unit: mm)
2. MAIN PERFORMANCE:
Time (H)
Time (H)
Capacity input (%)
Number of cycles
SELF DISCHARGE RATE AT VAROUS TEMPERATURES
RETAINED CAPACITY (%)
DISCHARGE CURVE AT VARIOUS TEMPERATURES (56mA)
VOLTAGE (V)
VOLTAGE (V)
TYPICAL CHARGE CURVE AT VARIOUS CURRENTS
CYCLE LIFE CURVE
% NOMINAL CAPACITY
TYPICAL DISCHARGE CURVE (56mA)
VOLTAGE (V)
VOLTAGE (V)
TYPICAL CHARGE CURVE (281mA)
Time (H)
Time (Months)
3. SPECIFICATION:
1. APPLICATION
This specification applies to the Ni-MH batteries
Model: 250H
2. CELL AND TYPE
2.1 Cell : Sealed Ni-MH Button Cell
2.2 Type : Button type
2.3 Size type : 2.4V
3. RATINGS
3.1 Nominal voltage : 2.4V
3.2 Nominal capacity : 280mAh
3.3 Typical weight
: 23.7g
3.4 Standard charge : 28mA×14hours
3.5 Rapid charge
: 58mA×6hours
Trickle current
: 8.4mA
3.6 Discharge cut-off voltage: 2.0V
3.7 Temperature range for operation (Humidity: Max.85%)
Standard charge
0 ~ +45℃
Rapid charge
+10 ~ +45℃
Trickle charge
0 ~ +45℃
Discharge
-10 ~ +45℃
3.8 Temperature range for storage
(Humidity: Max.85%)
Within 2 years
-20 ~ +35℃
Within 6 months
-20 ~ +45℃
Within a month
-20 ~ +45℃
Within a week
-20 ~ +55℃
4. ASSEMBLY & DIMENSIONS
Per attached drawing
5. PERFORMANCE
5.1 TEST CONDITIONS
The test is carried out with new batteries (within a month after delivery)
ambient conditions
Temperature : +25 ± 5℃
Humidity :
60 ± 20%
Note 1
Standard charge : 28mA×14hours
Standard discharge: 56mA to 2.0V
5.2 TEST METHOD & PERFORMANCE
Test
Unit
Specification
mAh
≥280
Standard
Charge/discharge
Open Circuit
Voltage (OCV)
Voltage
(V)
≥2.6
After 1 hour standard
Charge
Internal
Impedance
mΩ/cell
≤800
Upon fully charge
(1KHz)
Minute
≥60
Standard charge
Before discharge
mA
140
Maximum continuous
Discharge current
Capacity
High rate
Discharge(140 mA)
Discharge
Current
No leakage
Not explosion
Over charge
Charge
Retention
mAh
224
Cycle Life
Cycle
≥400
No leakage nor
Deformation
Leakage
Conditions
Remarks
Up to 3 cycles
Are allowed
8.4mA charge
one year
Standard charge;
Storage: 28 days;
Standard discharge
IEC/CEI61951-2:2001. 4.4
Fully charge at 28mA,
Stand 14 days
Note 2 IEC/CEI61951-2:2001. 4.4 cycle life
Cycle number
Charge
Stand in charged Condition
Discharge
1
28mA for 16h
None
70mA for 2h20min
2-48
70mA for 3h10min
None
70mA for 2h20min
49
70mA for 3h10min
None
70mA to 1.0V/cell
50
28mA for 16h
1h to 4h
56mA to 1.0V/cell
1. Befor the endurance in cycles test, the cell shall be discharged at 56mA to a final voltage of
1.0V/cell.
2.The following endurance test shall then be carried out, in an ambient temperature of 20℃±5℃.
5.3 Humidity
The battery shall not leak during the 14 days which it is submitted to the condition
of a temperature of 33±3℃ and a relative humidity of 80±5%.
6. OTHERS
6.1 We recommend you to set the cut-off voltage at 1.0V/cell.
6.2 If the cut-off voltage is above 1.1V/cell, the battery may be underutilized resulting
insufficient use of the available capacity.
6.3 If it is below 1.0V/cell the battery may have discharge or reverse charge to the cell.
7. PRECAUTION
The cells shall be delivered in charged condition. Before testing or using, the cell shall be
discharged at 20±5℃ at a constant current of 56mA to a final voltage of 1.0V/cell.
7.1 Avoid throwing cells into a fire or attempting to disassemble them.
7.2 Avoid short circuiting the cells.
7.3 Avoid direct solidarity to cells.
7.4 Observe correct polarity when connecting.
7.5 Do not charge with more than our specified current.
7.6 Use cells only within the specified working temperature range.
7.7 Store cells in dry and cool place.