This battery charger STC4054GR charge controller from STMicroelectronics is made up of integrated circuits that perform functions to help keep your batteries running smoothly. With an output that has a voltage of 4.2 V, this is power management at its best. Its output produces a current of 800(Max) mA. This product will be shipped in tape and reel packaging to allow for quick mounting and safe delivery. This device has a minimum operating supply voltage of 4.25 V and a maximum of 6.5 V. This battery gauge has an operating temperature range of -40 °C to 85 °C. This device runs on Li-Ion.