thats not enough to keep turning around. we have a different brand 800, similar setup and run 6s 5300 mah. we show up with 16 packs and even with a 1 kw charger it's barely enough to keep up.
I use 2 dell server power supplies withe the housings isolated from the board, i run two 1200 watt in series to get 24 volts then i'm on a icharger 3008...... it'll do 30 amps into a distro board that can charge up to 6 6s at a time. run that off a 4000 watt generator and it hums al day long, last shots of the day i'm waiting for packs and we go home totaly empty. 10 hour days
made it all myself. the server power supplies are like $20 ea on ebay, case was $60 and the charger just costs what it costs which was pretty reasonable
however, things have changed over at icharger and there new 40 amp dual output chargers on them 48v power supplies is where i'm heading next.... they do 80 amps on two packs, super dope