Battery swap for secondary battery

2011 CHEVROLET AVALANCHE
118,800 MILES • 5.3L • 6 CYL • 2WD • AUTOMATIC
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ROYCAR71
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Hello, I junked my 1999 GMC Jimmy and took battery. I recently purchased the truck listed above that has empty secondary battery tray. My question is, can I use the battery from the GMC Jimmy into the truck above as secondary with a "battery isolater"?
Nov 30, 2019 at 8:29 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
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Good morning,

Yes, you can. Make sure you hook it in parallel.

You can use the isolator but make sure you allow it to get charged at least once a week or you will run the risk of it draining.

Roy
Dec 1, 2019 at 5:48 AM
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ROYCAR71
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What gauge wire is suitable? Thanks.
Dec 2, 2019 at 8:45 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
Use battery cable to connect the positive and negative.

Roy
Dec 2, 2019 at 9:05 PM
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ROYCAR71
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Aw, meant size of wire I'll be adding/buying for secondary battery. 2,4, gauge etc.
Dec 2, 2019 at 9:46 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
4 gauge which is the size of standard battery cable.

Roy
Dec 2, 2019 at 9:58 PM
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