Description
A 2500mAh NiMH Battery Product Attributes
Key Features:
1. Rechargeable A-size Ni-MH cylindrical cell with 1.2V nominal voltage and 2500mAh nominal capacity.
2. Minimum capacity is 2500mAh under standard charge and discharge condition.
3. Standard charge is 250mA, 0.1C, for 16 hours at 20±5℃.
4. Quick charge supports 1250mA, 0.5C, for 2.4 hours at 10–40℃ with -ΔV=5mV/cell control.
5. Maximum discharge current is 7500mA, 3C, with 0.7V/cell cut-off.
6. Cell size with tube is 17.0mm diameter and 50.0mm height; approximate weight is 37.0g.
7. Recommended storage condition is -20℃ to 35℃, low humidity, and no corrosive gases.
| Type | Description |
|---|---|
| Category | Ni-MH Batteries |
| Mfr | GMCELL |
| Series | GMCELL® |
| Part Status | Active |
| Battery Chemistry | Nickel Metal Hydride |
| Battery Type | Rechargeable Nickel Metal Hydride Cylindrical Cell |
| Model | GMCELL 50A2500mAh |
| Specification | Ni-MH 50A2500mAh 1.2V |
| Battery Configuration | Single A-size NiMH cell, 1 × 1.2V |
| Voltage – Rated | 1.2 V |
| Nominal Capacity | 2500mAh under standard charge / discharge condition |
| Minimum Capacity | 2500mAh |
| Internal Resistance | ≤30mΩ within 1 hour after standard charge |
| Open Circuit Voltage | ≥1.25V within 1 hour after standard charge |
| Standard Charge | 250mA, 0.1C, 16 hours at 20±5℃ |
| Quick Charge | 1250mA, 0.5C, 2.4 hours at 10–40℃, -ΔV=5mV/cell |
| Trickle Charge | 0.02C–0.05C at 0–40℃ |
| Standard Discharge | 500mA, 0.2C discharge to 1.0V/cell at 20±5℃ |
| Maximum Discharge Current | 7500mA, 3C, with 0.7V/cell cut-off at -20℃ to 60℃ |
| Low Rate Discharge | ≥300 minutes at 0.2C after standard charge and 1 hour rest |
| High Rate Discharge | ≥112 minutes at 0.5C; ≥51 minutes at 1C after standard charge and 1 hour rest |
| Charge Retention | ≥1500mAh, 60%, after 28 days at ambient temperature or 7 days at 45℃ |
| IEC Cycle Life Test | ≥300 cycles according to IEC 61951-2:2017 / 7.5.1.2 |
| Operating Temperature | Standard charge: 20±5℃; fast charge: 10–40℃; discharge: -20–60℃ |
| Storage Temperature | Within 1 year: -20℃ to 25℃; within 6 months: -20℃ to 35℃; within 1 month: -20℃ to 45℃; within 1 week: -20℃ to 55℃ |
| Storage Recommendation | Store under -20℃ to 35℃, low humidity, and no corrosive gases; 1–3 charge/discharge cycles may be needed after long-term storage |
| Dimensions | Diameter 17.0mm (+0/-0.7); height 50.0mm (+0/-1.0); top diameter 8.0mm; top height 0.6mm |
| Weight | Approx. 37.0g per cell |
| Overcharge Test | 0.1C charge for 48 hours; no leakage or deformation required |
| Short Circuit Test | Leakage and deformation may occur, but no explosion is allowed after standard charge short-circuit test |
| Vibration Resistance | Voltage change <0.02V/cell and internal resistance change <5mΩ/cell after vibration test |
| Impact Resistance | Voltage change <0.02V/cell and internal resistance change <5mΩ/cell after three 100cm drop tests |
| Leakage Test | No leakage or deformation after 14 days storage following standard charge |
| Safety Test | No disrupt, burst, or explosion after forced discharge test; electrolyte leakage and deformation are acceptable |
| Warranty | One-year limited warranty against workmanship and material defects |
| Electricity Retains Before Delivery | Normally not less than 50% before delivery unless otherwise confirmed by special requirement |
| Charging Method | Use the correct charger for Ni-MH batteries; do not reverse charge, short circuit, or solder directly to the cell |
| Replacement Checkpoints | Confirm voltage, capacity, 50A cell dimensions, charge method, discharge current, storage condition, polarity, and pack assembly requirements before ordering |
| Shipping Info | Store batteries in a cool dry place; discharge batteries before bulk storage or shipment |
