Battery swap for secondary battery

Tiny
ROYCAR71
  • MEMBER
  • 2011 CHEVROLET AVALANCHE
  • 5.3L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 118,800 MILES
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"?
Saturday, November 30th, 2019 AT 8:29 PM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
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
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Sunday, December 1st, 2019 AT 5:48 AM
Tiny
ROYCAR71
  • MEMBER
  • 363 POSTS
What gauge wire is suitable? Thanks.
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Monday, December 2nd, 2019 AT 8:45 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Use battery cable to connect the positive and negative.

Roy
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Monday, December 2nd, 2019 AT 9:05 PM
Tiny
ROYCAR71
  • MEMBER
  • 363 POSTS
Aw, meant size of wire I'll be adding/buying for secondary battery. 2, 4, gauge etc.
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Monday, December 2nd, 2019 AT 9:46 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
4 gauge which is the size of standard battery cable.

Roy
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Monday, December 2nd, 2019 AT 9:58 PM

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