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Old 02-25-2020, 07:50 PM   #3
JohnnieB
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Join Date: Jun 2011
Location: West Virginia
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Default Re: New batteries, low voltage

If by "Accu-Sense unit" you mean a DPI Accu-Sense charger (probably a Gen IV), use it instead of the PW-QE P.O.S.

Attachment-1 is a SoC chart for Crown golf cart batteries. (lower voltages than Trojan or US Battery)

A new battery only has about 75% of its rated storage capacity (AH) until it has been broken in, which may take 50 or more charge cycles.

So your 12V-155AH batteries only had about 116AH when first installed and a Deep-Cycle Lead-Acid loses about 10% of its storage capacity for every 15°F below 80°, the temperature cart batteries are rated at. I used to live in SE MI (South Lyon) so I know it is a bit chilly this time of the year.

However, the SoC voltage ought to be about what the chart says no matter how low the storage capacity is, so the PW-QE might not be working right. Try the DPI and see what you get.
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File Type: jpg Crown SoC chart.jpg (208.1 KB, 0 views)
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