My car is not being used on regular basis, sometimes not for weeks/months. Can I use one of those AA 12V Solar panel 2.4 watt car battery charger to keep the car battery topped up all the time. Can I connect this through either the cigarette lighter socket (this socket is live on my car i.e. it works even when the ignition is off) or through OBD2 port and leave this connected for days ? Will it harm the battery if left on for too long ? The unit is supposed to have discharge/overcharge protection.
Many thanks for your assistance. Jay