dual battery chemistry setup

[L1ttlet]

I currently am putting a system in a 2020 toyota 4runner. I will a 320 amp alternator. I currently have the stock battery in and am wanting t9 add a 40ah lto bank to supply power to not only my audio system but to my aftermarket accessories as well. it should be more than enough to do so. I would like to keep the stock battery for the vehicle itself and rum everything else on the lto 40ah bank. is there a way to achieve this and isolate the two chemistries from eachother??

Click to read more...

 

[Slo_Ride 5,000+ posts]

Isolator

 

[L1ttlet]

that will 100% keep the lead acid from affecting the lto bank? do u have a link and where at on the system will I install it?

 

[L1ttlet]

also with a battery isolator when charging, both batteries will be linked together in system. I want them to stay seperate while charging as well.

 

[hispls 5,000+ posts]

I want them to stay seperate while charging as well.

Then you must buy a separate alternator and keep each battery system separate.

Either accept poor performance and shortened lifespan out of your lithium bank or upgrade until it's up to the job and delete AGM.