As I let the unit charge up yesterday, I noticed another really nice perk that I hadn't really expected. For some reason, a lot of battery chargers really seem to use a decent amount of power on standby. I know my 48V lawn mower has 4 chargers, and it draws somewhere around 20W+ once the batteries are full. This seems pretty dumb to me. So, I was extremely happy to see that as the pack neared full the power consumption dropped from 100W slowly down down down and finally settled at 3W with all the indicators green on the dc-dc boards. It may have even gotten lower, but I unplugged it. I feel this is a great perk because this thing will be sitting at 'idle'. Its not a super fast charge at 3-4A (still haven't nailed it down yet). So, if you need 7 hours to charge, chances are you aren't going to unplug it before night and it will be sitting idle most of the night. You don't want it sucking up power all night long when its not really doing anything.