Proper 2nd battery install

[reclessantics 10+ year member]

What if the battery's aren't the same?

like a stock chevy silverado batt, and an optima yellow top?

 

[jco1385 5,000+ posts]

What if the battery's aren't the same?like a stock chevy silverado batt, and an optima yellow top?

is the stock battery a wet-cell? or sealed?

i think the general rule here is you don't want to mix lead-acid (wet-cell) with sealed gel-type batteries.

 

[reclessantics 10+ year member]

i was just going to run a 4g (or if i need to a 0 ga) from the stock chevy battery to the optima yellow under my backseat. then id run another 4 or 0 ga, to a fuse holder, then to a distribution block. and of course id ground the second (optima) battery to something close by. i don't really listen to music without the truck on, so its not a huge issue of draining either battery. but wouldn't the optima (being larger and stronger) try to charge the stock battery? im guessing that is why its suggested to snag a battery isolator when installing the second battery.

thanks

kyle

 

[jco1385 5,000+ posts]

you didn't answer the question...

and no, they should level out. and you'll want 2 fuses between the batteries. one at the front, one at the rear.

 

[Donks 10+ year member]

where does the 2nd fuse go in the back? on the wire to the amp +?

 

[jco1385 5,000+ posts]

on the wire from the front battery to the rear. this wire should have 2 fuses on it. one in front, and rear

 

[PuZo 10+ year member]

When you run the neg to the distro using the rear bat, do you need to fuse that as well? Also If I dont install an isolator(their expensive) that just means both will be used at the same time right? I have a yellowtop and a powermaster D975, will they be fine together?