... Internal Battery type: Li-polymer battery cell MP 5000 universal power bank for laptop,mobile phone ... rechargeable li-polymer batteries, up to more than 500 circles,later the power can still remain 80%.3 ... rechargeable li-polymer batteries, up to more than 500 circles,later the power can still remain 80%.3 ... Size: 105*67*16mm Weight: 200g Accessories MP 5000 universal power bank for laptop,mobile phone ...