The Intelligent Battery and Power System serves as a complete AC/DC power supply and provides clean, regulated DC, sourced from Li-Ion battery packs, an AC wall outlet, or any external DC source including solar and wind power. Seamlessly taking over if the external power is interrupted, it recharges automatically when the power is restored and provides status feedback such as charge and discharge rate, time to empty, and number of active batteries. Modular, fully scalable, and SMB compliant, the system lets designers speed the development cycle of integrating up to 48 VDC battery power into an OEM product.