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Happy to report that my installation, guided by this thread, was fully successful! My only significant deviation was to install the power switch under the dinette beside the DC fuse panel using this switch. (I'm getting over my fear of drilling through gelcoat.) I used heavy duty velcro to anchor the POE injector and router mini. I think it will hold just fine but yet to be road tested. Thanks @dhaig for sharing your project!

I'm sure all the Victron users know this, but there is a temperature input on the Smart Shunt, on the Multiplus II and four on the Cerbo GX. I assume that information can also be fed to the phone app.

We love them! Since this picture we added a Dometic CFX5 45l in the truck bed and I purchased two more Ruuvis. We're always checking fridge/freezer temps, or I'm looking at the trunk temp which is close to outdoor temps. I have one back there to know when the incoming water lines are close to freezing. I'll put one on a battery just to see but we do not have the BBs. Two years ago I purchased a 4-pack of the simple white ones (not PRO model) and from memory it was under $100. Can't find those anymore, only seeing the PRO model. I got two on Walmart.com for about $45 each recently, like these. Anybody find a deal, please let us know! https://www.amazon.com/Bluetooth-Temperature-Pressure-Integrates-Assistant/dp/B0D3MDZCWF/ Picture shows two Ruuvi app screen-prints side-by-side showing how running the A/C while towing brought down cabin temp!

In all of my electrical upgrades, I went with NO physical monitors that would be wall-mounted in the Oliver. I like the cleaner look without and I LOVE the Bluetooth apps! 😎 I do have one of those sensors that came with the Victron shunt which I have in a box of extra parts. We have Epoch Essentials 300 Ah, ran two for 600 Ah last 18 months. Installing this week a 3rd 300. Given all this news, I will place a Ruuvi sensor there to measure heat for a while, but with 900 Ah I'd have to run our A/C, our Air Fryer and run a power cord to another RV to run their A/C to get anywhere the 600A of continuous power (2x for peak use) the spec of these batteries. 3x the 100 Ah Battleborns vs. 3x 300 Ah Epoch? 300 vs. 900 Ahs, we live in different worlds.

Three way selector switch to the 712. One in, three options out. Would of course need three of the temperture sensors. GJ

Hey John, pretty sure you have the BMV712, if yes it has a connection/terminal on the shunt to connect an external temp sensor, like THIS Victron temp sensor.

Thanks for the suggestion, I’ll check them out.

Heat is conductive, so I believe your app is all you need. If your post heats, the battery temp should go up too. Hoewever, small changes in battery temp might mean larger temps at the post. We have Epoch and I searched through their app and did not find temp (anybody with Epoch please let me know if there is temp reading). You could add Ruuvi sensors on the other two. We use these since in the fridge, freezer, cabin, trunk and on truck fridge and cabin. If I had BB I would move a couple , mount top of each battery near the + post.

I have the Victron BMV 712 monitor also, along with 3 BB 100’s that are 5 years old. Working perfectly, no problem. My temp sensor is located on the B+ terminal closest to the load. But it only measures the temp of that battery, which was fine before this mess. If anyone has a good idea how to monitor the temps on each BB battery remotely using the Victron monitor or otherwise, let us know. Otherwise, we can just monitor temps the old fashioned way. I checked terminals carefully yesterday, not loose, not discolored, no signs of stress. I put as much load on them as I could, including running fridge on DC. I don’t have an inverter, so the amp draw was only about 18A. I measured battery terminal temps before and after with Fluke thermometer. Temps did not increase, the amp draw is just too low I suppose. I shut the batteries off and put the winterized trailer back to sleep. Temps are in the low teens at night where I live, so no plans to go camping soon. Maybe BB will eventually do right for their customers, but I won’t postpone camping until that happens. I’ve got a few months to decide what my next steps will be.

So with Lithonics Lithium Batteries, the phone app has a battery temperature reading for each battery. If there was an issue, would that show up at the temperature reading or is the temperature reading something else?

Down from a high of $258.74 in Dec 2022. Ouch!

Dragonfly Energy (stock ticker DFLI) down 37% today due to 10-1 reverse stock split being announced. They appear to be trying to hold onto their NASDAQ listing as the stock is trading at about $0.45 today.

HERE'S another YouTube observation on the subject - start the Battle Born segment at 2:27 of the video. Bill

Gary - There is already a three page thread on this subject. Try CLICKING HERE to start reading. Bill

Thanks. Will do.

Thanks. Will give that a try

Just saw Battle Born Lithium Batteries can catch on fire so says Will Prowse. It involves an aluminum nut on the terminal. Anyone else seen this? Be Safe out there. Gary Hull 292,. The Range Rover

We use Tile Pro trackers (by Life360). Works with Android and iOS. Don't know if they are as feature rich as AirTags (don't have an iPhone) but they have several models with different features. https://www.amazon.com/Tile-Life360-Pro-Bluetooth-Compatible/dp/B0D637HWC5/ref=sr_1_19?crid=2XJAY04P3UCDH&dib=eyJ2IjoiMSJ9.bO9LSRG-Q2eHGVfY3qcVHIf7ZNIXZ0jEakdV-K7k_LsylnUuOmqcGy1y1rYMhs1V3ByTDGfVetzFThllP0vFn9iWM7HTzU4hz2ioekXd_UnjhNATNzHYQ46Y4UjAwPyAUbcFXq7FqepiYY9ZLAxqHqMm2ZKB_vP-lR5USAiQVijIddJulZNzaBQD76w6inYTfd4IfG-jbosNxodqQaPOUZoa2ehnzJbLDOfEBFpUPoU.fYN5jHbnmqMjz2TA9I1VgJJJJNhHkT9dpjResmsEYIM&dib_tag=se&keywords=tile%2Bfor%2Bandroid&qid=1765854073&sprefix=tile%2Bfor%2Bandroid%2Caps%2C127&sr=8-19&th=1

Looks familiar 😄

To use a Samsung Air tag with a Google Pixel Phone you would need to get the uTag App. For me, the non-gadget person, it seems to be rather involved with the steps required to access the airtag🙃

What a great adventure!!

Look up Moki Dugway.It's a road in UT.. the most amazing road I have driven. It climbs 1,300 feet in 3 miles, hanging off a rock face overlooking Valley of the Gods. Valley of the Gods is spectacular but an afternoon drive to the top of Moki Dugway will make a little vertigo set in. and see if you can find Ollie in the below image..

Oddly enough, this thread is linked in a travel video on YouTube that I stumbled across today. 🤪 Jump to 9:38

Thanks I will check them out👍