Jordy im not gonna read all this madness, so incase u havent gotten the answer yet - its no problem, atleast not for a short period of time, it will be ok to test with it, drive to finals, burp and drive back. put the 2150 in the back and smaller batt up front.

 

Jordy... exactly ...listen to what Yuli just said and dontt keep reading this...just put the BIGGER battery as close to your amps as possible and connect the two together... of course using 1/0 AWG [img]smile.gif[/img] and you're good to go