Rechargeable batteries are used in many electronic devices, including laptops, digital cameras, and other portable devices that rely on rechargeable batteries. They are also commonly used in toys, flashlights, and other low-power electronic devices. Using rechargeable batteries can be cost-effective and environmentally friendly, as it reduces the need for disposable batteries and reduces waste. Battery chargers are required to keep your rechargeable batteries topped up and can often recharge multiple battery sizes.