jieiku
Thread starter
- Joined
- Jun 26, 2023
- Messages
- 17
No, not for no reason. I wired all four of them up in series to a 48V inverter, and they are not charging to the same voltage. I tried this for a good amount of time, you can see that there was a month to my previous post. This is because they are unbalanced, and the internal resistance obviously plays a factor. After I do this to all four batteries the internal resistance will likely be matched well, and all the batteries will have been equalized.
Previously I used a 24 volt inverter and had 2 in series, it was like that for 5 years and they always charged at exactly the same voltage, never an issue and I would check them twice a year, those are the older batteries mentioned in this thread. ( I just recently upgraded to a 48 volt system, the old 24 volt system will be going to my mother, the batteries from that system still work like new. )
If I absolutely have to I will get a battery management system, or individual battery tenders so that I can keep the battery bank balanced.
This is all important because if I simply wire them up to the inverter/charger then some of them will sit at 12.5 volt while others sit at 14.5 volts, this is because the bank is unbalanced. Even if I were not having this issue of an unbalanced battery bank, having a good equalization charge should help the health of the batteries in the long run.
Previously I used a 24 volt inverter and had 2 in series, it was like that for 5 years and they always charged at exactly the same voltage, never an issue and I would check them twice a year, those are the older batteries mentioned in this thread. ( I just recently upgraded to a 48 volt system, the old 24 volt system will be going to my mother, the batteries from that system still work like new. )
If I absolutely have to I will get a battery management system, or individual battery tenders so that I can keep the battery bank balanced.
This is all important because if I simply wire them up to the inverter/charger then some of them will sit at 12.5 volt while others sit at 14.5 volts, this is because the bank is unbalanced. Even if I were not having this issue of an unbalanced battery bank, having a good equalization charge should help the health of the batteries in the long run.
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