... lithium manganese button cell, 12V (23V/27V) combination button cell,green cylindrical type (AA, AAA) carbon, alkaline battery, 9V (6F/22) battery, rechargeable battery ... and various kind of battery’s welding,packing and assembly. Our product has the advantage as following:high capacity ... . 3.7v 1900--2600mAh capacity Li-ion rechargeable battery 18650