Quick charge portable PSU

I don’t think that I wrote that out correctly. What I want to do is find an alternative to the 48v battery below. It is 10AH and 100A is the type of charge and discharge performance that I am after. My charge controller can provide 100A charge current and that much discharge current ability too would be good. A very short runtime with 2x amp modules at full tilt is ok and 5-10mins is good

To get that kind of current performance, I have to use a LiFePo4 bank D which is very heavy. I don't need the duration of a 100AH battery, just the max charge and discharge current

1736749531183.png