... Fashion power bank for samsung galaxy s2 1.Size: 24x33x77mm 2.Weight:230g ... 4.Fast delivery Fashion power bank for samsung galaxy s2 1.Battery type: Lithium-ion 18650 batteries2. ... protection chip, overcharge, over discharge, overload, short circuit full protection15.Function: available on the market a variety ... energy efficient.18.Long life: top-level circuit design program, the service life of up to ...