3.7v liion klang rechargeable battery supply 1,Deaigned for outdoor klang 2, Customization made 3,OEM&OBM&ODM 4,CE&ROHS high capacity longtime outdoor rechargeable battery:1.3.7v liion rechargeable battery pack for outdoor sound&outdoor lighting2, high temperature or common3,Customization made4,CE&ROHS5,OEM&OBM&ODM6,Chemistry:liion7,3.7v liion battery8,wire and leads ,cassette,Welding tablet ...