Battle Born battery failure

[rustyButcool]

I’ve been running three 100Ah Battle Borns with a Victron MultiPlus for four years without a hitch... until now. every time I try to kick on the AC (pulling about 120A), the whole system just shuts down.
I did some digging and realized the positive terminal posts on all three batteries are loose internally. if I put even a little pressure on the post, the power cuts in and out
I’ve seen a few other people online mentioning this same loose post issue.

my connections have always been tight and I check them twice a year, so I don't think it was arcing or external heat damage. it looks like a straight up internal failure. anyone else dealt with this?

 

[Alan]

With three 100Ah Battle Borns and a Victron MultiPlus, a 120A pull should be manageable, so the shutdown plus loose posts points to intermittent high resistance at the terminal. That can trigger low voltage, BMS protection, or a hard disconnect under load. I would check each battery one at a time with a lighter controlled load and monitor voltage drop, but only if the terminals are not moving.

 

[fullych4rg3]

Battle Borns have 10 year warranty, you need to contact your dealer

 

[DunbanHero]

If the positive posts on all three Battle Born 100Ah batteries wiggle internally and you can make power cut in and out, I would document it with video and contact Battle Born right away.