SOC meter is now reset. I would hold it there for a day or so.
My only guess is that one battery disconnected because of a high cell and now it has settled while it was disconnected and the others are still at absorb or float. After some time did that one reset and join the others? In parallel they should all be at the same voltage. Do you have access to individual cell voltages within each battery, or some way to test my hypothesis?now it goes to 100% but the voltage doesn't.
or see if the BMS has switched off Charging due to a high voltage cell hitting the HV cut off?Do you have access to individual cell voltages within each battery, or some way to test my hypothesis?
I’m with Ampster, you can’t have batteries in parallel with any decent interconnect and have different voltages.My only guess is that one battery disconnected because of a high cell and now it has settled while it was disconnected and the others are still at absorb or float. After some time did that one reset and join the others? In parallel they should all be at the same voltage. Do you have access to individual cell voltages within each battery, or some way to test my hypothesis?
I agree that something had to disconnect otherwise the voltage would have to be the same being in parallel with the other batteries.My only guess is that one battery disconnected because of a high cell and now it has settled while it was disconnected and the others are still at absorb or float. After some time did that one reset and join the others? In parallel they should all be at the same voltage. Do you have access to individual cell voltages within each battery, or some way to test my hypothesis?
I had a similar issue of one battery only charging to 89% so I just did the firmware update (may 2024) and now it goes to 100% but the voltage doesn't. Note they are all in parallel in the cabinet. Fix one problem and the next pops up.
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I had an issue of running just #4 on a 1KW load. It cut out randomly. My goal was to run it down for a little bit and then charge it up. It would cut out but didn't give any inforamtion in the HUB. The other issue is that the Hub was powered off the buss with only that battery on so it turned off before it recorded anything. I captured it on Solar Assistant.I would recommend isolating the battery at 54.5v and separately charging this until it reaches the correlating voltage of the other three. Once this is done, reintroducing the fourth battery to the pack to see if this is corrected.
It is just sitting there balancing away
Agreed.Your pack is way out of balance - you're showing 109mv delta.
If this was mine, I would open it up and use a bench power supply to pull up those low cells (#1,3, & 15) the balancer may take a very long time to bring these into balance on it's own.