To err is human, but to really foul up, you need a computer.
Software is inherently less reliable than hardware.
The quickest way to ruin a good workstation is to program it. Liveware is inherently less reliable than software. Never trust any system designed, built, programmed, or operated by a human. No good deed goes unpunished. The circuit most likely to short-out and drain the batteries is the monitoring circuit installed to protect the batteries.