STBC15 Linear Battery Charger STMicroelectronics STBC15 Linear Battery Charger is a linear charger thin-film battery with a maximum charging current of 40mA. The device uses a CC/CV algorithm to charge the battery. Due to the ultra-low consumption architecture, the STMicroelectronics STBC15 Linear Battery Charger is suitable for low-capacity cells such as thin film batteries and can use low energy sources such as energy harvesters. A 5V input like a standard USB port can be used as a voltage source as well. A specific version (-L) is available to charge Li-Ion cells.