... battery Specification of mobile backup battery Place of originGuangzhou,China(Mainland)BrandKFLBattery typeLi-ionCompatible brandX1/X2/X10Capacity1400/1450mAhStandard voltage3 ... incorporating advanced international technology with the battery industry in China,the parent company also set up Konfulon Electronic Technology ... and ODM orders. BST41 X1 X2 X10 lithium battery china manufacturer direct sale