That 28.8v is also assuming his cells are balanced.
One run away cell combined with a poor BMS he may not get to above 27.6v before the BMS stops charging.
Solar charge controllers overcharging during full sun hours.
- Thread starter krumbles
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One run away cell combined with a poor BMS he may not get to above 27.6v before the BMS stops charging.
willful simplicity
New Member
The USE setting did not work for changing the values. It let me change the setting from 12 to 24volts. Then when you hit the up button it goes back to 12volt and every push after that just goes through the factory 12 volt settings. It wouldn't even change those.
willful simplicity
New Member
Yup...
mikefitz
Solar Wizard
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- May 28, 2020
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Page 21 explains how to alter voltages.
You set as 12 volt systm and the unit X2 the setting for a 24 volt system. This is explained in the manual.
The batteries in series/parallel could have become unbalanced causing a BMS shutdown in one or more of the batteries.
Last edited:
willful simplicity
New Member
Fitz. Thanks for pitching in. I reread the manual page 21.I think I was reading it wrong, or actually not doing the process correctly. I will try it again later today.
willful simplicity
New Member
Another question. Does a full charge to the batteries rebalanced them?
sunshine_eggo
Happy Breffast!
It gives them time at elevated voltage for the BMS to have an opportunity to balance them.
willful simplicity
New Member
Thanks
willful simplicity
New Member
Okay, went back to the manual and finally read it correctly. Everything is working great I want to thank everybody's input that helped to make it happen. I am indebted.... Make it a great day...
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