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I had read the advice to charge and balance prior to mounting them (or placing in service) as well, In addition to doing it every 6 months or so. Im only a couple months in - so i was surprised that the consumption of only 5kw sent them into that state.

I'm using them in a 48v config. 2 48v strings in parallel to get 48v@ 200Ah - on a eg4 6k. So I was thinking being Li I could push them down to 30% or so safely. Got to about 50% and 1 in each string went into over discharge. (I did get them to recover). So bus bars and balancers are in my...

I was worried about this too - but figured it out. I have an offgrid EG4 6k [with 3.6kw PV and LI 200aH batteries) to a Tesla mobile charger (NEMA 6-50) - and it faulted with 2 flashes - even with internal bonding. Add a simple light bulb string light to an outlet with a circuit checker...

I had a similar problem on an off grid system. I simply plugged in a simple outlet tester (10$ or so at the big box stores) and it 'bleeds' enough to allow things to work as expected with a non grid bonded system. YMMV. My electrician did the 'huh' when I told him it worked...