Abstract: A man-portable incident command platform is provided. A controller for a rechargeable battery system is disclosed that evaluates whether a cover of the rechargeable battery system is open or closed; determines whether an AC power source is available; evaluates a charge level (for example, from a system management bus) of one or more batteries in the rechargeable battery system; and enables a charging circuit for one or more batteries requiring a charge based on whether the cover of the rechargeable battery system is open or closed and if the AC power source is available A charging circuit for the rechargeable battery system is disclosed that comprises one or more programmable voltage sources for charging one or more batteries in the rechargeable battery system.