• Eliminates disposable battery waste with rechargeable design. • Includes 4 AAA batteries and USB charging cable. • Each battery provides 500mWh, suitable for devices like mice and controllers. • Lithium technology maintains consistent voltage output. • Batteries hold charge for months when not in use. • Built-in USB charging ports on each battery, no separate charger needed. • AAA batteries are commonly used in remote controls, toys, and other small electronics.