Is it safe to connect a battery to a 'smart' mains charger all winter?
I see that you replied to Brian Joslin's question "Is it safe to connect a battery to a 'smart' mains charger all winter" in the negative, but I thought that is exactly what they are designed to do (although I connect mine for just 48 hours once or twice a month). Could you expand a bit on this?
You can leave it connected to a 'battery conditioning float charger'. This maintains the battery at a constant 13.5 volts.
Answered by Honest John on