Basically here is what you should do.
Batt1-300a------------300a-batt2-150a-amp.
If you use too small of a fuse in between the batts they could blow if you do something like jump the car off etc. between the two batteries you need to fuse it at the wiring max, because 300a of live current will kill your carpet, if you are lucky, if not it will burn your whole car down.
Batt1-300a------------300a-batt2-150a-amp.
If you use too small of a fuse in between the batts they could blow if you do something like jump the car off etc. between the two batteries you need to fuse it at the wiring max, because 300a of live current will kill your carpet, if you are lucky, if not it will burn your whole car down.
