jmjack
Need More Sun
Hello,
I am needing some help understanding what I am seeing from BMS Test.
I have just completed my installation of two 6500EX-48 inverters in split phase with 4x EG4 lifepower4 48v batteries. All 4 batteries are installed in a SS rack to the bus bar. I did remove and flip the ground bus bar to attach the DC cables at opposite ends of the stack. Used 4/0 cable from bus bars to small wall bus bars, then 2/0 cables to breakers then to inverters. I used 2 ga cables to attached batteries to bus bar.
Here are my current questions/issues:
Would appreciate any help or insight. Output from BMS Test is attached.
I am needing some help understanding what I am seeing from BMS Test.
I have just completed my installation of two 6500EX-48 inverters in split phase with 4x EG4 lifepower4 48v batteries. All 4 batteries are installed in a SS rack to the bus bar. I did remove and flip the ground bus bar to attach the DC cables at opposite ends of the stack. Used 4/0 cable from bus bars to small wall bus bars, then 2/0 cables to breakers then to inverters. I used 2 ga cables to attached batteries to bus bar.
Here are my current questions/issues:
- From day one, I received Low SOC alerts at about 14% of charge. I do have the stand alone 48v charger from SS and I did top off each battery battery before I installed them in the rack and connected them to the inverters. After receiving the errors, I returned to grid power and charged the batteries back up. Ran another cycle off the batteries, this time all 4 batteries Low SOC alerts. Is this normal operation for these batteries to provide Low SOC alerts?
- Battery Pack 1 has cell overvoltage alarm. Is this an issue?
- Battery dates are concerning. Purchased all 4 at the same time in June 2022. Two batteries dates/times are from 2020, and one from 2080!!!! Any ideas here, someone being funny from the factory? Did i receive two batteries that were sitting for two years? Its looking like quality control is lacking here.
- Should all cells be in a state of balance?
- How close should each cell voltage be?
- How often should they be rebalanced? Is this a manual process or will the BMS rebalance as needed?
- I still get error 61 even with configuring per SS last video. This is only happening at low SOC and at full charge, This is very annoying. If I don't use a communication cable to the batteries wont error 61 always be there?
Would appreciate any help or insight. Output from BMS Test is attached.