Practical repurpose of second battery ?

[PPV_2018]

I was looking for some advice or ideas on what could I do with the second battery on a Tahoe PPV. Does anyone know what relays/modules are routed to the secondary battery (if any) from the factory?

I figure its intended use from the factory would be for upfitting, to power emergency equipment without drawing on the main battery but obviously in the civilian sector that isn’t really needed. So I’m wondering what should I do with it

Thinking about maybe doing a sound system, like amps and subs and wire it to the second battery?

What about setting it up as a ‘reserve’ battery in case the main battery fails.. Would that be possible? practical?

Would appreciate any input

 

[Sparksalot]

I was looking for some advice or ideas on what could I do with the second battery on a Tahoe PPV. Does anyone know what relays/modules are routed to the secondary battery (if any) from the factory?

I figure its intended use from the factory would be for upfitting, to power emergency equipment without drawing on the main battery but obviously in the civilian sector that isn’t really needed. So I’m wondering what should I do with it

Thinking about maybe doing a sound system, like amps and subs and wire it to the second battery?

What about setting it up as a ‘reserve’ battery in case the main battery fails.. Would that be possible? practical?

Would appreciate any input

You might look through the GM Upfitter guide to see if they were available with the isolation relay, and what the number is for it. In the gmt900 PPVs they were available with and without the relay. Thecopcar didn’t have one while theothertwin did. If I remember it was a common multipurpose relay used in a lot of GM vehicles. It had ignition sense to isolate the second battery when the engine was off.

 

[Doubeleive]

I was looking for some advice or ideas on what could I do with the second battery on a Tahoe PPV. Does anyone know what relays/modules are routed to the secondary battery (if any) from the factory?

I figure its intended use from the factory would be for upfitting, to power emergency equipment without drawing on the main battery but obviously in the civilian sector that isn’t really needed. So I’m wondering what should I do with it

Thinking about maybe doing a sound system, like amps and subs and wire it to the second battery?

What about setting it up as a ‘reserve’ battery in case the main battery fails.. Would that be possible? practical?

Would appreciate any input

commonly they are just connected in parallel

 

[justchecking]

Mine is set up so the primary passenger side battery is used for every thing. The second drivers side battery is only used for starting if the primary is dead. There is an isolation module that connects both only when engine is running for charging. If I need to start from the secondary battery I toggle a switch. Look up Hellroaring battery systems.