... is to be used in the clothing Heating system for heating jacketThe product has such characteristics as ... the characteristics of light, thin, good heatingefficiency, low power consumption, uniform in heating, effective to reach the ... packs4,800mAh-7.4V (two connect in series)Using 4,800mAh Li-ion battery, it is light, ... 3,500mAh-7.4V (two connect in series)Using 3,500mAh Li-ion battery, it is light, ...