Supplementary Specifications ✔Charging cut-off voltage:4.2V ✔ Discharging cut-off voltage: 3.0V ✔Line sequence description: Red line is positive, black line is negative ✔Applicable scenarios:Thin and light tablets, portable displays, smart handheld terminals, portable medical devices, industrial testing instruments ✔Manufacturer:Shenzhen Xinhui Zhuoneng Technology Co., Ltd ✔Origin:Made in China