Integrated power switch allows you to put the External Battery Case in standby model. Only use the battery when you need it. In standby mode(red), the External Battery Case still allows charge and sync capabilities through the micro-USB port and still offers the complete protection of case.
User breakthrough rechargeable lithium polymer battery. (Much safer than those troublesome lithium Ion batteries).
The External Battery Case offers complete protection from top to bottom. No more choosing between protection and power.
Built-in short circuit, over-charge and temperature protection.