I have seen 40 amps pulled, upon start up of my Mega Watt S350-12. Usually, within a minute or two, it's down to 33,32,31,30, then pretty much settles in at 29 amps and declines slowly from there. This is with a disconnected voltage of 15.04 set on the pot, with the unit powered up and disconnected from the battery. I run 8 gauge wire to the ring terminals, then to a single T-1275. 45 minutes to an hour usually gets me to a 15 amp to 12 amp charge rate on the T-1275, and from there, I shut it off and let my 8.8 Amp output from a 150W solar panel do the rest.
I don't worry how much amps I pull down running the TV at night anymore, I seem to always be able to go 3 days on solar before a 2 hour generator session and solar the rest of a sunny day gets me pretty much topped off. I am no longer frugal with the LED lights at night inside, I like it bright and cheery these days, the battery does just fine.
I think I paid $55 shipped, plus sale tax, and this unit does the job just fine for me. Battery is the limiting factor... I don't think the T-1275 likes taking a fast charge as much as a pair of 6V T-105s. YMMV, sometimes I wish I had a 100 AH LiFePo that didn't break the bank on price to acquire... maybe in a few more years.
