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.