Electric_Andy
Heavy Metal Fan
- Location
- Plymouth
I think this is the best way unless you want to go down the solar route. A dedicated smart car charger will be worth the money, they will put out a higher power when the battery is low, and then enter maintenance mode when it's full. Also cabling etc is properly rated for that specific use. The extension cord and charger under the bonnet is also a better idea as it will not get wet (unless you get heavy sideways rain) - you should be able to close the car bonnet fully with the extension cord running under it, there's usually a good gap somewhere or you can leave it on the latch if not enough room to close.I run Ctek chargers on vehicles that don't get much use to keep them in good order, ready to use.
run 240v extension under car and into engine compartment, place charger under bonnet also, secure aprt from cable