The GP250AFH is a rechargeable Nickel Metal Hydride (NiMH) cylindrical cell manufactured by GP Batteries. It is an AF-size cell (similar in diameter and height to an A-cell format) designed for applications requiring relatively high capacity and high discharge currents.
Key Specifications
- Model: GP250AFH
- Chemistry: Nickel Metal Hydride (NiMH)
- Nominal Voltage: 1.2 V
-
Capacity:
- Nominal: 2500 mAh
- Typical: 2550 mAh
- Size: AF cylindrical cell, approximately 17 mm diameter × 50 mm height
- Weight: About 39 g
- Internal Resistance: Typical 19–20 mΩ when fully charged
Performance
The GP250AFH is designed for both moderate and high-drain applications:
- Recommended discharge current: 250 mA to 7.5 A
- Fast-charge capability: 0.5C to 1C (1.25 A to 2.5 A) with appropriate charge control.
- Service life: More than 500 charge/discharge cycles under IEC testing conditions.
Environmental Limits
- Charging: 0°C to 45°C
- Fast charging: 10°C to 45°C
- Discharging: −20°C to 50°C
- Storage: −20°C to 35°C
Typical Applications
Because of its relatively high capacity and ability to deliver high currents, the GP250AFH is commonly used in:
- Emergency lighting systems
- Medical equipment battery packs
- Industrial electronics
- Portable instrumentation
- Cordless devices
- Custom rechargeable battery packs with welded tabs or spot-weld connections
Energy Capacity
At 1.2 V and 2500 mAh, the cell stores approximately:
1.2 V × 2.5 Ah = 3.0 Wh (watt-hours)
This makes it suitable for equipment needing moderate runtime and good current delivery.
In summary, the GP250AFH is a robust 1.2 V, 2500 mAh NiMH AF-cell rechargeable battery offering high-current capability, long cycle life (>500 cycles), and dimensions of roughly 17 × 50 mm, making it a popular choice for industrial and battery-pack applications.
