Specification :

Battery low indicator: when battery voltage is low, the led light will be on. Please dismount the load at once and renew the standby battery as soon as possible.
Charge indicator: when the standby battery is being charged by solar, the charge indicator lights green. After charged, the light will be off. ( The indicator is valid only under solar- power charge. If external charge, refer to the direction of the external charger.)
External charger input: when sunshine is not enough, please use external soure to charge the battery.
5.6V and 8.4V DC output: 350mA ( max.) output current
13.7V DC output: 450mA ( max.) output current
17.5V DC output: 1.5A ( max.) output current
Charger for: laptop, mobile phone , mp3, mp4, psp. pda, dv, note book… … .
Specifiaction
1. Capacity: 3.7V 7800mAh
2. Dimension: 272* 205* 28mm
3. Weight: 1.45kg
http: / / www.twingro.com