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Secondary Battery

Secondary Battery

Postby bmallett [OP] » Aug 01 2020, 12:31am

I have a 2020 Silverado Custom CC. I need to add a secondary battery but when I look under the hood, they have changed the frame rails to be angled. There isn't a place for one now. Does anyone know where a second tray can be added? I can't go under the rear seat.
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Re: Secondary Battery

Postby EaOutlaw1969 » Aug 01 2020, 9:23am

Why the second battery? New audio system or other electronics?
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Re: Secondary Battery

Postby roorancher » Aug 01 2020, 1:19pm

Guys on another site are complaining about no place for a secondary battery as well. Some mentioned installing a sealed battery up front on the frame where a winch might go, or behind the fuel tank.
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Re: Secondary Battery

Postby EaOutlaw1969 » Aug 01 2020, 2:58pm

The reason I asked if this was for car audio or added on electronics they have some cool new options that have more mounting flexibility options than a traditional battery This is just one of many new products out there that may get you a custom battery in nearly any weird nontraditional space.

From one of my YouTube subscriptions Williston audio labs

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Re: Secondary Battery

Postby silentbravo » Aug 01 2020, 3:48pm

I wonder if the Duramax trucks only have one battery, or maybe they configure under the hood differently to accommodate the 2nd?

There has always been a space built in for all the platforms since the Duramax where a 2nd battery could be mounted, but looks like they packed the new truck engine bay tightly.
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Secondary Battery

Postby ferraiolo1 » Aug 01 2020, 3:53pm

2500 trucks are completely different under the hood.

The 19+ 1500 trucks had the cabin moved over the engine bay to provide more interior room. But sacrificing engine Bay Area.

Edit- I forgot they have a dmax 1500

There was a member on here you mounted a full size battery behind his 2019 front bumper so he listen to his radio while tail gating.

I can’t remember his name. But the thread is on here.


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Re: Secondary Battery

Postby 19trax95 » Aug 01 2020, 4:02pm

I don't believe the 1500 duramax trucks have a 2nd battery either.

You can do a remote mount battery like was mentioned earlier. There is room in the bed sides by the frame that could work, as well as spots on the inside of the frame. Behind the front bumper may work too depending what it looks like behind it. I have seen what the t1xx trucks look like back there yet.
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Re: Secondary Battery

Postby roorancher » Aug 01 2020, 4:25pm

The 2020 2500HD Diesel indicates a second battery, but doesn't show where.
Perhaps a trip to a dealer when they're closed, slide under a truck, and have a look....

https://www.gmpartsdirect.co/auto-parts ... ttery-scat
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Re: Secondary Battery

Postby 19trax95 » Aug 01 2020, 4:32pm

The HD trucks are setup very different than the 1500 trucks.

The 2nd battery in the HD trucks is in the same spot as it was on the k2xx trucks. The main battery is in the passenger side rear corner of the engine bay, like the k2xx trucks. And the 2nd battery is in the drivers side front corner.

The 1500s don't have nearly as much room as the HD trucks do.

First pic is the HD truck and last one is the duramax 1500 truck. ImageImage
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Re: Secondary Battery

Postby roorancher » Aug 01 2020, 4:36pm

Ten pounds of **** in a 5 pound bag..........
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