Material: Use durable plastic shell and metal AA battery box holder with lead wire.
Protect the Battery: The battery holder can be used as an external power storage or holding batteries, Keep your battery protected.
Easy to install: The battery is fixed by a stainless steel spring. It is very convenient to install and replace the battery, and it is not easy to damage other parts.
Convenient to Use: With ON/OFF power switch and sliding closure that can be locked by screw and easy to carry. Avoid unnecessary losses of electrinic power.
Wide Application: Toys, electronic DIY, low-voltage electrical appliances, remote controls, wireless keyboards, electronic calculators, remote controls, radios, etc.