Rechargeable batteries and chargers provide a reusable alternative to disposable batteries. These batteries (also called secondary cells) can be replenished for multiple uses by a compatible charger to eliminate the need for constant replacement. They're ideal for powering high-drain equipment such as keyless entry systems, digital audio devices, digital cameras, GPS, and video game controllers. They are sized according to the same ANSI/IEC standards as disposable batteries, so they can be used as direct replacements.

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.