On 08/02/2018 11:53, F wrote:
I've SORNed my car as I'm not going to be able to drive it for a couple
of months. No doubt the battery will eventually need a charge but do I
really have to disconnect it as current [pun not intended] advice seems
to indicate? If I do, I will, no doubt, have a whole lot of setting up
to do on the various electronics.

It's many moons since I last charged a car battery and at that time I
just clamped the charger leads on and let it get on with it.



Why not start it once a week, give it a good revving then let it tick
over for ten minutes? That will stir the battery electrolyte a bit and
also keep the engine happy. Move it backwards and forwards a bit so the
clutch and brakes don't rust up.

If your only concern is the battery you could follow my method, which is
to have the charger powered from a circuit that is only on occasionally.
In my case it's the power to an outbuilding, which might be on for half
an hour a week.

Bill