Rechargeable NiMH D battery GP 900DH 9000 mAh — GP D-size (Mono)

GP 900DH is a rechargeable NiMH D-size (Mono) battery with a nominal capacity of 9000 mAh designed for devices that require long runtime and reliable power delivery. The cell delivers stable voltage under load and supports repeated recharge cycles, making it suitable for appliances where replacing disposable batteries is inconvenient or costly. Its D-size format fits standard D battery compartments used in lanterns, large flashlights, portable radios and other high-drain or continuous-use devices.

Advantages

The rechargeable NiMH chemistry provides a high energy density and good cycle life while avoiding the waste associated with single-use cells. With 9000 mAh capacity the battery extends run time compared with lower-capacity D cells and maintains usable voltage during discharge for consistent device performance. The rechargeable format reduces ongoing costs and environmental impact by enabling many charge/discharge cycles. The battery is compatible with standard chargers designed for NiMH D-size cells.

Suitable for

• High-output flashlights and work lights
• Camping lanterns and portable lighting
• Portable radios and communication devices
• Toys and hobby equipment that use D-size cells
• Emergency kits and long-duration power applications

Key specifications

• Battery type: Nickel–metal hydride (NiMH)
• Size: D (Mono)
• Nominal capacity: 9000 mAh
• Cell format: cylindrical primary geometry for D compartments
• Typical nominal voltage per cell: 1.2 V
• Designed for repeated charge/discharge cycles

How to use

Insert the GP 900DH cell into devices observing correct polarity. Charge the battery before first use and recharge using a charger compatible with NiMH D-size cells and the cell's physical dimensions. Follow the charger manufacturer’s guidance for charge current and termination method to maximize cycle life. Avoid charging in extremely high or low ambient temperatures; charge and discharge within the temperature ranges specified by the charger and device manufacturers. Store cells in a cool, dry place when not in use and ensure battery contacts are clean to maintain reliable connection.

Usage recommendations

For best results, use a dedicated NiMH charger with appropriate charge termination (delta-V or temperature-sensing) and avoid overcharging. Cycle new batteries through a few charge/discharge cycles to reach optimal capacity, and avoid leaving cells in a discharged state for extended periods to prevent self-discharge-related capacity loss.