Hi new in the group, my first thread. I have LX 570 10, plan to build overland vehicle. I want to do double battery set up. I have see multiples builds by Slee Colorado. They have relocate main battery to passenger side to have a bigger deep charging battery on driver side . Do somebody have done this set up. How to relocate battery, new cables, re-signalling,hard ware needed? Thanks Luis.
Dual battery set up LX 570
- Thread starter luisjapr1
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Sorry if I don't answer your question directly. While lots of people have done dual batteries installs, there is a general movement away from them. Arguable reasons of capability, flexibility, capacity, cost, complexity, durability, weight, etc. Sure an installed solution may have more expedition credibility by classic measures, but the reality is that some of the new breed of lithium portable batteries, aka solar generators, can do better on many of those fronts. A 1000wh class solar generator, with built in high power inverter, will do amazing things.
Here's some discussion that may help you frame what you're looking for
forum.ih8mud.com
Here's some discussion that may help you frame what you're looking for
KISS Dual Battery Upgrade
There’s been a lot of discussion on batteries and battery systems. Here’s my attempt to offer an easy button. The task of a battery first and foremost is to offer power and reserve capacity. There’s many battery setups and systems talked about. But perhaps some of those are solving a problem...
forum.ih8mud.com
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I agree with @TeCKis300 that a portable power station has the potential to be more flexible, practical, easier, and reliable than a dual battery setup. However, if you want to read up on what others have done for dual batteries, go to post #5 in the forum frequently asked questions thread and scroll down and bit to get solid info from 3 experienced users.
forum.ih8mud.com
FAQ - 200-series FAQ for Modifications, Repairs and Build Threads. Great place for new users to start
The Frequently Asked Questions (FAQ) for the 200/LX570 series tech section continues to be a work in progress. The goal is to have links in the below to other threads and tech articles. By having these linked, instead of pasting the text, the threads will remain live. The live threads can...
forum.ih8mud.com
Slee Offroad out of Colorado sells the battery tray and hold downs you’ll need. They offer a dual battery wiring solution. However, you’ll find several alternative approaches if you search on this site. It is quite possible to do a DIY installation (I did). Based on the level of questions you are asking, you might be better off finding an off-road shop to wire this up for you. I haven’t relocated the starting battery location, but it is easy enough to do.
Julian73
SILVER Star
Slee is just an hour down the road, go there.
I just installed the Slee 2nd battery tray but yet to install or wire a battery. The install was simple and wiring should be as well. It may depend on if you want to isolate your 2nd battery and the use of switch or isolator.
I can't speak for others, but that wiring example wouldn't be helpful, since it doesn't isolate the auxiliary battery. One of my key use cases is being able to self jump start by linking the batteries, but that is predicated on the auxiliary battery remaining charged if the primary goes dead.
I'm running a dual battery setup on my Tundra. I left my starting battery and OEM cables alone and in their factory positions. I followed this diagram I found on ExPo, ordered pretty much everything off of Amazon (cables are from HD). The only thing that is different is that I made 2Ga cables instead of 4Ga. You have to use a crimping tool to properly make your cable ends. My house battery lives in a marine box in the bed. It runs my Dometic fridge and some LED strands. This diagram does not include a solar panel to recharge. I generally don't stay in the same spot more than a day without exploring in the truck, so we recharge as we hit the trails.
There are better and more elaborate ways to do it. I use a PAC500 relay (in the place of the 80A solenoid in the diagram) that joins the batteries when the truck is running and isolates them when the truck is off. Some people run the Blue Sea ACR so they can jump from the house battery if their starting battery goes dead. I keep a Noco GB70 onboard for that. I've used it a couple times to jump other people on the trail.
I used two AGM batteries that are easily found at any Autozone in the country. I have read on here that people don't like AGMs as much. For the Tundra, I added a diode that lets the AGM see the charging voltage it wants to see. This summer will be two years without issue. We'll see if my AGMs fail.
If I had to do it again, I would probably run outlets to the bed to keep a Jackery portable unit plugged in and topped off while driving. If you go with a Jackery, make sure you are able to secure it in your vehicle. You'd hate for it to turn into a missile in the event of emergency evasive maneuvering or an accident.
Full write-up here. Pics from my setup:
There are better and more elaborate ways to do it. I use a PAC500 relay (in the place of the 80A solenoid in the diagram) that joins the batteries when the truck is running and isolates them when the truck is off. Some people run the Blue Sea ACR so they can jump from the house battery if their starting battery goes dead. I keep a Noco GB70 onboard for that. I've used it a couple times to jump other people on the trail.
I used two AGM batteries that are easily found at any Autozone in the country. I have read on here that people don't like AGMs as much. For the Tundra, I added a diode that lets the AGM see the charging voltage it wants to see. This summer will be two years without issue. We'll see if my AGMs fail.
If I had to do it again, I would probably run outlets to the bed to keep a Jackery portable unit plugged in and topped off while driving. If you go with a Jackery, make sure you are able to secure it in your vehicle. You'd hate for it to turn into a missile in the event of emergency evasive maneuvering or an accident.
Full write-up here. Pics from my setup:
Just spit balling ideas here. What if you put a low voltage cutoff (attached to big relay of course) between the house and start batteries, that way if you start draining the battery too much the house battery can be cut off to hold charge in case of a jumpstart. Also wire in an override switch in case you need to use the extra capacity and to activate the “jump start” mode.
As another mentioned being able to isolate the second battery is important and you will see several examples. You can do automatic isolators or manual switches. I will have a simple switch on second battery positive. You can also do a three way switch to select battery 1, 2 or both that is common in marine applications.
Seems like a simple relay/isolator will solve all this. They’re cheap, too. Unless one is worried about it failing in the field? I’d just rather not have to remember to open my hood and turn switches every single time.
I think we are saying the same thing. I was responding to @CharlieS who was concerned about isolating his batteries to keep at least one from being run down by accessories.
My proposed solution is same as yours, but has a low voltage cut off to automatically trigger the relay to prevent running both batteries down.
I’m very happy running with an EcoFlow River Pro. I’m now looking to upgrade it to a Delta, as I’m looking for just a bit more power. Charges fast and gets the job done powering my National Luna fridge and devices. Far cheaper than dual battery setup, reliable, no weird issues such as parasitic drain, etc.