Maha Energy Corp. Powerex 9V NiMH Rechargeable Battery 300mAh

9V NiMH 300mAh Rechargeable Cell

This Powerex 9-volt battery delivers 300 mAh of nickel-metal-hydride capacity at a nominal 8.4 V. It arrives precharged and ready for devices such as wireless microphones, guitar pedals or medical instruments that require a standard 9 V form factor. The chemistry eliminates memory effect so the cell can be topped up at any state of charge without capacity penalty.

Sustained Drain Behaviour

Under continuous load the NiMH chemistry maintains a steady voltage plateau for much of the discharge cycle before dropping off near the end. Because the cell is rated at 300 mAh, runtime scales linearly with the current draw of the attached device. The low self-discharge construction allows the battery to sit for months and still deliver nearly its full rated capacity when needed.

Charger Compatibility Limits

The manufacturer specifies use with the Powerex MH-C1090F 10-bank charger or the MH-C490F Stealth charger. Chargers not designed for 9 V NiMH cells may apply incorrect termination voltage or charge current, which can reduce cycle life or pose a safety risk. Always match the charger to the 8.4 V nominal voltage and 300 mAh capacity of this cell.