(lol) just by a good battery (lol)
I have bought so many of these they never last more then a year
Operating instructions no. 1.
Any charger can do that. Just make sure that the car goes to "sleep" to be on the safe side.. Basically give it 5 minutes after taking key out of ignition & dont change the state of any door/bonnet/boot ie if you want to keep it open, then leave it & keep the others shut. Opening or closing a door will wake the car up again.
Can anyone recommend a car battery charger I can use to recharge my battery without having to dismantle or remove the battery from the car? :/