... ,for galaxy, htc 1.fashion sun battery charger 2.flexible, handheld solar charger solar back up battery charger for iphone ,for galaxy, ... ericssion,nokia Specifications Use high conversion efficiency of monocrystalline silicon solar energy, conversion efficiency is as high as 17% ... to fully charge the build-in battery by solar (under efficient sunlight).2 hours is required to fully charge the ordinary ...