I run battery tenders on all my stuff, my question is I've got a dual battery setup with the tru Isolater , Do I have to put the quick connects on both batteries or just the factory battery?
joeymt33
i4WD=imitated 4WD
Moderator
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I believe just the OEM battery. The isolator should connect the two when voltage rises on the primary battery.
I'll have to check this when I get home.
Here's a link to a nice permanent mount maintainer.
SE-1-12S-CA
Waterproof and very small
I'll have to check this when I get home.
Here's a link to a nice permanent mount maintainer.
SE-1-12S-CA
Waterproof and very small
A
Depends on the charger you use.
Info from Battery Tender: "In most cases, a 12 volt lead-acid battery, at 100% SOC, will have a rest voltage between 12.8 and 13.1 volts. That means an effective float voltage need only be as high as 12.9 to 13.2 volts. However, most Battery Tender® battery chargers have float voltages between 13.3 and 13.5 volts"
True Isolator connects the pair of batteries @ 13.4 volts and disconnects @ 12.9 volts.
Quick connects on both batteries to be sure.
I would do each one independent each week or something. If you connect them in parallel and they are not the same make and size or age you tend to overcharge one and shorten it's lifespan.
tjoreo
Well-Known Member
Lifetime Member
This was a question I had too. I was doing a little research on the Blue Sea mini add-a battery that a lot of guys use, and came across a new product that they are suppose to release this month. I looks like it comes with the disconnect switch and a permanent mounted battery charger/acr relay combined. Might be something worth researching some more. Looks like it charges both batteries individual when you plug it in. I think you can just buy the charger separately if you want to also.
Mini Add-A-Battery Plus Kit - 65A - Blue Sea Systems
Mini Add-A-Battery Plus Kit - 65A - Blue Sea Systems
I just put the battery tender jr on the factory battery with the temp alligator clips after few mins the blue light on the True ISO. lighted up blue , the tender is showing red so that means its charging so it looks like for now its charging both batteries but I'm gonna keep eye on it, normally with just the factory battery the tender shows 80percent charged with 10 mins and fully charged with in 20 mins.
