http://www.ctek.com/gb/en/chargers/MXS%205.0
Best charger out there in my opinion.
I was recommended them a few years ago by someon who consistently got about 4 or 5 years out of a leisure battery.
So far I've had my current leisure battery for nearly three years and is still holding its charge like the day I bought it, so I'd very much vouch for c-tek chargers.
What setting do you use it on?
I use it on "car" and "recon" . The recondition light is the last light as you cycle through the settings. It's supposed to give a more gentle charge which puts batteries in a better condition for longer.
If you need a quick charge just put it the car mode and that's fine.
It easily charges my 110 amp overnight. Although I suspect it doesn't take anywhere near a full night to charge, I just notice it's full in the morning.
I thought the recon setting was a high amp charge to get rid of the buildup from off the plates inside the battery.