The KP Original 3.7V USB Battery Charger Cable is a reliable and compact charging solution designed specifically for small lithium polymer batteries used in RC helicopters, quadcopters, and DIY electronics projects. Featuring a precise MX 1.25mm 2-pin JST connector, this charger is compatible with batteries that use the 1.25mm pitch connector — please note it is NOT compatible with 2.0mm or 2.54mm JST connectors, so do verify your battery’s connector size before purchasing. The charger delivers a steady 1A output current, ensuring safe and efficient charging for your 3.7V LiPo batteries. Simply plug the standard USB-A end into any USB power source such as a laptop, power bank, or USB adapter, and connect the JST end to your battery. The built-in LED indicator conveniently displays the charging status at a glance. The cable is generously long, offering flexibility during use. Compact, lightweight, and easy to use, this charging cable is an essential accessory for hobbyists and electronics enthusiasts looking for a dependable power solution for their miniature battery-powered devices.