Editor’s note: Battery charging in a float or maintenance mode has been around for a while, especially for standby power, emergency lighting, telecom, uninterruptible power, and other critical power ...

The humble battery charger has evolved to a smart, microprocessor-controlled battery charger-maintainer, able to detect weak batteries and—to an extent—“repair” them, alert the operator to dangerous ...

Operations at a remote cellular telephone relaying facility came to an abrupt halt one afternoon in 1992 when a 12V lead-acid automotive battery used to start and run a 50kW emergency engine-generator ...