This is a Quality smart charger because it has parallel charged my 3 36v 4.5 ah battery packs multiple times, I burned 3 36v cheapo plastic chargers in a few months and since there's no fuse to change there useless, now I haven't had to change the fuse on this charger and like the 80% 90% 100% charging option and spare two fuses it comes with.
36v 4amp Luna Mini Charger
The charger arrived in about a week. It seems to be of very high quality. I was happy to see that there were some adapters included with the charger that may come in handy.
I almost bought a cheaper charger off ebay but I kept reading good things about Luna chargers so I decided to spend the extra cash to get a quality charger.
I've only used it once so far (it's the middle of winter here in WI) but it worked well. I think it will last a long time.