Driving will recharge a battery

Recharge Battery

After leaving the car’s lights on and flattening the battery – going for a drive will recharge it – FALSE

You won’t fully recharge your battery by going for a drive, idling the engine, or going for a short stop-start trip. In fact ‘surface’ charging or continuous undercharging will lower the capacity of the battery over time and shorten its life.
The way to reliably restore a flat battery’s charge is to use an appropriate multi-stage battery charger. The charger voltage needs to be high enough to mix the battery acid evenly in the electrolyte to prevent ‘stratification’.