ENERGIZER 522BP-2 9 V alkaline standard battery 595 mAh

9 V alkaline cell for everyday devices

This Energizer 522BP-2 battery supplies 9 V DC from an alkaline chemistry rated at 595 mAh. It is designed for multipurpose use in flashlights, smoke detectors, toys, radios, CD players, remotes, electronic games, calculators, pencil sharpeners, cameras and portable tape recorders. The cell is new and contains no recycled content.

Voltage and capacity limits for low-drain loads

Alkaline 9 V cells deliver their rated capacity only at very low discharge rates typical of smoke detectors or remotes. Higher-drain devices such as motorised toys or portable audio players will see a much shorter usable life because internal resistance rises as the cell depletes. The chemistry is non-rechargeable, so the battery must be replaced once the voltage drops below the device’s minimum operating threshold.

Simple drop-in replacement with polarity care

Installation consists of opening the device’s battery compartment, matching the snap terminals to the marked polarity and pressing the cell into place. The most common issue is reversed insertion, which can damage sensitive electronics. Always remove exhausted cells promptly to avoid leakage, and do not mix fresh and used batteries in the same device.