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Dual Batteries for Rocklights?

xKingdom

Full Member
Joined
Sep 9, 2021
Messages
125
Location
Wisconsin, USA
Hey fellas, I just got a free battery out of a car that is in pretty good shape. I know my 08 Avalanche has dual battery trays, but I’d like it to charge both batteries but I only want my second battery to run the 20x Rocklights I’m sporting. Could someone guide me through this?
 
need isolation kit.
see other threads in this section from members who have dual batteries
 
Easiest way to add the dual batteries is with this kit, there are other manufacturers if you want to search. You can also look at the install manual to see what is involved.. Another way is with just a battery isolator that will keep isolate and keep both batteries charged but I'm not sure if it will work properly with a 08-charging system.. Also, FYI you need both batteries to be close in age and size for proper function..

 
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