OEM (original equipment manufacturer) batteries are direct replacements for manufacturer-specific batteries. These proprietary batteries are used incompatible devices that won't accept universal replacement batteries. OEM batteries are typically found in rechargeable devices such as cordless tools, flashlights, lanterns, and two-way radios.

Batteries and battery chargers provide power and portability to electrical devices and equipment. Original equipment manufacturer (OEM) batteries can replace manufacturer-specific batteries incompatible devices such as cordless tools, lanterns, and two-way radios. Disposable, household batteries are commonly used in low-drain devices such as flashlights, remote controls, clocks, and smoke detectors. High-performance batteries provide increased capacity to handle spikes in power demand from high-drain devices such as digital cameras, thermal imagers, digital audio, drones, video game controllers, GPS equipment, and keyless entry systems. Rechargeable batteries can be used repeatedly without the need for constant replacement. Battery chargers replenish the power of depleted rechargeable batteries.