Steve_S
Offgrid Cabineer, N.E. Ontario, Canada
Thanks a lot, keep the updates coming, wish I could fin way to cross post your pictures etc into this thread to amalgamate the info. You said in the other posting that No Documentation was provided by the vendor (I read that last night), I find that a bit peculiar and bothers me a bit. So I'm curious, what Charging Profile are you using ?Well, I'm using this battery now. 2nd cycle since I received it, used about 2,300 Watts DC so far (with losses considered) after full charge. All cells are balanced with one another (~3.30V per cell, 26.32V total under load). Everything's still looking good. I'm averaging about 400 Watts per hour tonight. Currently powering my home office room now (ie. 2 Desktop computers, 1 laptop, 5 monitors, a stereo, a 48" TV with sound bar, and 2 room fans). I even plugged in my refrigerator to bump up the usage a bit. Bumps up to about 650 Watts when the fridge is running. I'm surprised I'm not drawing more power than it seems. I have no complains with this battery so far. it's working as expected.
I'm still apprehensive to power anything unattended from it until I get a little more experience with it (proven itself). So, I shut it all down when I'm not around. I'll leave it running my fridge over-night to see how it does.
Because I'm using a Midnite Classic 200 Solar Controller and the Samlex EVO-4024 Inverter/Charger setting up the charge profiles is a tad trickier, plus the available amps for charging will have to be programmed in as well, maybe a charge rate of 50 Amps max.
Bulk Voltage: 28V - 29.2V
Absorption Voltage *: 28V - 29.2V Absorption Time 0-15 min
Float Voltage *: 26.6V - 27.6V
Equalize *: OFF or as short time possible @ float voltage
VOLTAGE CUTOFFS Low Voltage: 22V - 24V High Voltage: 29.2V
* not necessary
I'm making the "assumption" from my collected research, that by using a lower rate @ 28V to charge vs 29V can help mitigate some heating potential and extend life cycles (very generalised) but there seems to be some extended debate on that.
If it had a different BMS I could use the Control Signal capability to start/stop charging on the Samlex & Classic but it doesn't have that from my understanding. Gosh I'm anxious to get mine.
EDIT: Modyfied 1st post to include images my system for more background info on what I am working with.
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