Who has experience with (blue) aluminum cells in a mobile system?

Anyone?

Ah, I see that listing has expired.
So here's the details:
Cole Hersee Model 24812
12V 225A Heavy Duty Solenoid
Brand new $75.00

Ok, update,
Finally ditched the Daly BMS and fitted a JK-BMS with built in balancing, sooooo many settings!
I have since tweaked everything and the system appears to be working fine.
I am attaching the PDF with specs for all my components and all the settings F.Y.I
Feel free to comment.

Oh and while I'm here just a heads up. There is an ability in the JK-BMS control App to turn off charge and discharge, turning off discharge has two consequences, firstly your BMV-712 will lose all it's stored data, and second and more importantly, apparently with the current firmware if you then turn the JK-BMS back on it does NOT revert to the former battery type, but instead reverts to the initial battery setting in the unit when it is first booted, be WARNED!

And a further warning, once you set the battery type in the App when setting up the JK-BMS and set all your settings, DO NOT tap the battery type i.e. Lipo etc. next time you use the App as it will reset ALL the settings to default (see above). Don't ask me how I know!

Dzl said:

Also, I'm not sure any lifepo4 are designed for EV use,

Click to expand...

Not sure if it's been mentioned yet but I've currently been looking into the byd blade Lifepo4 cells these seem to be used in many of the more recent byd EV's the design is very different to other prismatic cells on the market(see below)


Their aluminium case but I have yet found any examples of how they're interconnected.

Tex, I don't think that I've seen anyone put the shunt between the battery and BMS.

I have the JBD BMS on both of my 280Ah 4s batteries. The connection is like this on my system: battery->BMS->shunt.

With respect to the topic of this thread, I have my LiFePO4 batteries installed in my RV trailer, which is a toy hauler. The trailer has been down some gnarly back roads and even on I-70 here in Colorado (the pothole king). I've had zero issues with the cells. They are in a compression fixture without anything between the cells - no spacers. I check the fasteners on the cell terminals once a year and there has been little to no movement in the fasteners attached to the rigid busbars.

My next battery will have the flexible busbars, but only because the busbars were "free" with the cells. Dividers came with the cells so I'll also use those.

I made it before, for the simple reason that in the case of a LVDC from the BMS BMV-712 will shut down and lose ALL its data.
Why is that important? Because it records the complete history of your cells including minimum and maximum voltages, firstly very handy if you were to make a warranty claim, secondly on reboot my understanding is it will revert to all default settings, PITA.

I realise it draws a tiny current but that doesn't concern me really, and actually I see the JK actually draws more current, as expected with running those two LED's. voltage difference across everything with my meter is negligible.

And I agree on the original topic, vibration, corrugations etc. not an issue at all, I think that might have started with boats in the early days of lithium.

I just shut down my entire 12 volt system this weekend using the main switch to check all the fasteners (batteries, MPPT busbars, etc). I shutdown the entire system because I know I'm a klutz. I didn't lose any settings in the Victron components.

That's because your shunt is connected directly to the battery + terminal.
Plenty of people in the past complaining about dodgy Victron BD's shutting down and losing all their data.