I purchased this charger to charge the 6 group 31 batteries that are in the trunk of my lowrider, and it is possibly the highest quality charger ive ever owned.
Its built of an all metal shell with plenty of ventilation for the heat, and a plastic handle which works fine as it is not a heavy charger.
When charging, its pretty much just plug and play. Very easy to use, just a quick glance thru the instructions was all i needed. It will charge standard, lithium, and AGM batteries depending on what setting you have it on.
It makes a bit of noise from the fans inside the charger but you have to stand very close to hear it.
The only con to this charger is that it only charges 4 banks at a time, which depending on how many batteries you have can be good or bad. Overall i definitely reccomend this charger thru and thru!