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Need info on small solar setups
#30
There were times that I was pushing 60 amps into a string of 210 Ah golf cart batteries. Recommended charging rate is .05 to .13 of the amp-hr value so 60 amps is 2 to 3 times the recommended charge rate. The charge controller goes by voltage to say when the batteries have charged enough so charging them at a high rate, which requires extra voltage to push the extra current through, satisfies the charge controller algorithm too soon. Depending on sun conditions and power use, you can be alternately over-charging and under-charging your batteries. The last set of golf cart batteries that I killed had to live through a period where I was changing over from an APC UPS3000 to the SW 4048. I also did a lot of work on the solar arrays as well. There were a couple of weeks where they were horribly undercharged and shut off due to low battery voltage a couple of times. That is low voltage as defined by the UPS. UPSs sacrifice the battery bank to serve the load they are protecting so that killed that bank extra early.

At this point I probably know enough not to commit any further battricide but I am ready to move on.
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Messages In This Thread
RE: Need info on small solar setups - by kalakoa - 03-21-2022, 04:52 AM
RE: Need info on small solar setups - by achutch3 - 03-21-2022, 03:54 PM
RE: Need info on small solar setups - by randomq - 03-21-2022, 10:04 PM
RE: Need info on small solar setups - by kalakoa - 03-22-2022, 06:00 PM
RE: Need info on small solar setups - by kalakoa - 03-22-2022, 08:41 PM
RE: Need info on small solar setups - by kalakoa - 03-23-2022, 06:29 PM
RE: Need info on small solar setups - by kalakoa - 03-24-2022, 08:16 PM
RE: Need info on small solar setups - by MarkP - 03-31-2022, 06:06 PM
RE: Need info on small solar setups - by kalakoa - 03-31-2022, 06:28 PM
RE: Need info on small solar setups - by MarkP - 04-02-2022, 12:24 AM
RE: Need info on small solar setups - by MarkP - 04-04-2022, 11:41 PM
RE: Need info on small solar setups - by MarkP - 04-06-2022, 05:20 PM
RE: Need info on small solar setups - by MarkP - 04-06-2022, 07:55 PM
RE: Need info on small solar setups - by MarkP - 04-09-2022, 02:43 AM

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