Depends on the amps you are charging at. But probably OK. I have a very similar looking and speced ProPeak supply, I can charge two 2s 5000mAh lipos at 10 amps each. Or four at 5 amps each. Draws around 15 amps from the supply.

Tried going higher with the supply, up around 18 amps, that didn't work out so well.

Also charging higher voltage lipos, like a 4s, would reduce what you can do, as each battery-charger would require more power.