Electronic Cigarette with Portable Charger Case -Silver

【Product Description】
The standby battery will be charging once connected with USB plug.LED3 turns on to show it is under charge state ；LED3 turns green once it is filled
Cut off USB plug，LED3 turns off
Connect with electronic cigarette，LED1 turns red to show the battery is under charge，it turns off once filled
When the standby battery in low voltage，LED2 turns on to show electric shortage，and indicate to charge the standby battery soon
When the standby battery in low voltage，the battery is under charge state，LED1 and LED2 flicker，and continuously charged
When the standby battery is used out（Voltage lower than 2.8+/-0.2V）,main board stops output, and the static current is less than 8UA,turns to dormant state, prevents battery release
Output short circuit protection