With this portable solar battery pack, users would be able to use their notebooks about 1.5-2 hours more. 7 output ports with different voltages can be used to charge cell phones,mp3/4,ipods,iphones, pda, digital camera, portable dvd players and other electronics as well. 

·  Battery type: lithium polymer battery

·  Capacity:      4000mAh/44.4W

·  Solar Panel:  4.5W

·  Rated input:   DC: 12.6V/1.5A

·  Rated output: DC ports: 16V/3A, 19V/2.5A, 11.1V/4A, 9V/1.5A, 5.4V/0.5A
                          USB port: 5V/0.6A

                          Mini USB port: 5V/0.5A

·  Cycle life: after more than 500 circles, the power can still remain 80%.

·  Intellectual protection PCBA: protection for overcharge, over-discharge, overload, and short circuit protection.

* Welcome to contact us when you have questions about this product.