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The basic will be a lot simpler and cheaper to install, just have it combine with the key in Run position and it will work well enough. There are trade offs between a basic isolator and a smart one.
True smart battery isolator installation install#
I did a fancy install with isolator if you were interested in going that route. I have a "dumb" alternator though, it just charges at max all the time, so there wasn't anything special I had to do. I installed dual battery with smart isolator in my truck. In the reverse of that situation, run all your extra loads from 2nd battery and it should stay isolated from your starting battery, so if you run down the 2nd battery it won't matter and you can still start from your main battery. If your main battery dies, (left the lights on or whatever), you can combine both batteries together and hopefully your 2nd battery is strong enough to combine with your drained battery and you can still start up. Then you have the freedom to use different battery types/sizes, and can be used as a backup source of power. The main benefit of the isolator is to keep the 2 batteries apart when Not charging. When combined it will be exactly the same as running them in parallel. It's not optimal but if you are driving it regularly It likely isn't going to matter over the course of the batteries lives.Īn isolator is just a switch to separate the 2 batteries. The diesel trucks use 2 batteries in parallel and have for quite some time, so if there is anything special going on in the charging system they have done it in the diesel trucks I would guess. The weaker battery will constantly draw down the stronger battery when they are in parallel. You want both batteries to be in as close to the same condition as possible and the same model, otherwise they will fight each other. What you do have to watch with using 2 batteries is that they both are purchased at the same time and are the exact same battery model. The alternator should adjust well enough to charge both.
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Actually putting both batteries together is the same as combining them into 1 big battery, and your loads don't seem like it would matter to have both battery grounds going together through the sensor. I don't see a problem with doing a parallel battery system, and not bothering with the ground sensor.
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My understanding for the ground sensor is that it tells the computer how hard the alternator needs to work. NO fancy stereos, truck is NOT used for plowing, again just looking for extra electrical capacity that's it. Question, can i just run two dual battery's In (Parallel) with NO isolator?Īlso this (GM SENSOR RING) do i need to run the negative ground through this ring before grounding it to the block? again this for the 2nd battery.ĭoes anyone know if this would cause harm to the alternator, just running this set up in Parallel with no isolator, I only ask this because i hear of dual battery systems coming from the factory with NO isolator at all (true?) i don't know I am told that this has a (Smart Alternator) and my understanding how this works is well understood.
True smart battery isolator installation plus#
Plus a roll bar with some LED lights (nothing to off the wall). My mission here, is to just increase the amount of battery capacity for all the technology that is associated with this truck. I recently purchased a 2018 GMC Sierra All Terrain Edition with 25k miles on it, and it has almost every option you could want in a truck. Hello folks, hope all is well with everyone, I've read many post's about dual battery set ups on this site, and still some uncertainties loom.