by moley551 » Wed Oct 18, 2017 11:04 pm
unfortunately none of the cheap options will give a Full charge to your leisure battery, It's been covered a few times, Sterling make a 12v to 12v charger that will work 100% the manufacturer have a video and explain how it works and also why normal methods won't. I gave up and fitted a solar panel to the roof it works really well and keeps the leisure battery topped up, mine is used to charge tools etc and to run test equipment, not camping.
"Don't find fault, find a remedy"
H. Ford