Ok so I just got a WM4 a few days ago and this is my first time as a user. So I'll admit it could be something I'm doing wrong, or just misunderstand about the unit. Here is my issue (I'll try to describe as best I can):
(using LiFePO4, WM4, Blockmon)
When a cell goes above 3.5v threshold it starts balancing... Ok so far but when all the cells start coming back down sometimes some of the cells still shows as above that limit, basically stuck at the high voltage in the toolkit and continues bypassing those cells (red light is solid and blockmon is very hot to the touch). I can (and have numerous times to check) at this moment use a multimeter to verify that the cell voltage dropped back below the 3.5v limit. Sometimes considerably like to 3.4v or so and yet still burning down energy thinking the cell is high. This does not happen to all cells (which might lead me to thinking it's normal behavior) but tends to happen to certain cells and not others. The others exhibit (what I think is) normal behavior and come back down in voltage slowly after a cloud passes over or some large load comes online, or some other thing that would lower voltage naturally to battery even if just temporary. I have kind of a small battery for my usage (1200-1600w typical day usage, but only 3KWh battery). So any wall AC unit compressor kicking in will cause at least some small but noticeable sag to my cells voltages. Especially if neat 100% SoC (around 3.6v).
Only fix I have found so far is to "device sync" which immediately fixes the issue and appears to do equivalent of "smacks the blockmons upside the head" to make them realize the real voltage and stop bypassing. At that point all cells voltages on the chart drop back instantly to the correct level that agrees with manual multi meter testing and balancing stops. Prob is... sometimes I have to do this multiple times a day and it's annoying. Worse, if I leave it for too long it can get the batt cells even more out of balance causing me issues down the road.
Have I a bug or issue with my setup to troubleshoot or do I need to flip a setting or misunderstand a timer here? I'm not using 'auto balancing' btw just regular for now. Even without a lot of knowledge of the product's natural behavior... something about this just doesn't feel like natural behavior.
(using LiFePO4, WM4, Blockmon)
When a cell goes above 3.5v threshold it starts balancing... Ok so far but when all the cells start coming back down sometimes some of the cells still shows as above that limit, basically stuck at the high voltage in the toolkit and continues bypassing those cells (red light is solid and blockmon is very hot to the touch). I can (and have numerous times to check) at this moment use a multimeter to verify that the cell voltage dropped back below the 3.5v limit. Sometimes considerably like to 3.4v or so and yet still burning down energy thinking the cell is high. This does not happen to all cells (which might lead me to thinking it's normal behavior) but tends to happen to certain cells and not others. The others exhibit (what I think is) normal behavior and come back down in voltage slowly after a cloud passes over or some large load comes online, or some other thing that would lower voltage naturally to battery even if just temporary. I have kind of a small battery for my usage (1200-1600w typical day usage, but only 3KWh battery). So any wall AC unit compressor kicking in will cause at least some small but noticeable sag to my cells voltages. Especially if neat 100% SoC (around 3.6v).
Only fix I have found so far is to "device sync" which immediately fixes the issue and appears to do equivalent of "smacks the blockmons upside the head" to make them realize the real voltage and stop bypassing. At that point all cells voltages on the chart drop back instantly to the correct level that agrees with manual multi meter testing and balancing stops. Prob is... sometimes I have to do this multiple times a day and it's annoying. Worse, if I leave it for too long it can get the batt cells even more out of balance causing me issues down the road.
Have I a bug or issue with my setup to troubleshoot or do I need to flip a setting or misunderstand a timer here? I'm not using 'auto balancing' btw just regular for now. Even without a lot of knowledge of the product's natural behavior... something about this just doesn't feel like natural behavior.