How to play

You are the battery management system (BMS) of an electric vehicle pack. Charge the pack, then drive the route. Keep every cell inside its safe window.

• Watch every cell. Each tile shows voltage, charge (SOC) and temperature. Amber means near a limit, red means danger.
• The fullest cell ends the charge. The emptiest cell ends the drive. Cells are never perfectly equal, so balance them.
• Click a cell to bleed it through a resistor (passive balancing). It wastes charge as heat but lets weaker cells catch up.
• A safety trip opens the contactor and costs 12% pack health. Wait until voltages and temperature are safe, then press RESET.
• Heat, cold and sitting at 100% wear the pack slowly. Health below 40% means game over.
• Stars: 1 = finish the route. 2 = finish with health 85% or more. 3 = health 92% or more, no trips, and the weakest cell still above 6%.

Sandbox

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