Here is what I started with:
Cart: 2007 Club Car with OBC, unmodified, four 12 volt GC-12 batteries.
Charger: Club Car model 22110
Only change was to replace the lead acid batteries with four Nermak Model 1250 50 ah LiFePO4 batteries, each with its own built in BMS.
Total cost $840.
Most people would choose the 100 ah batteries, but because of my unique situation of never needing to go more than 1.5 miles between charges, I decided to save money and get the 50 ah model.
In my test drive, I was unable to notice any change in characteristics or performance between a fully charged set of lead acid batteries and the new LiFePO4 batteries.
Before I started my test drive the four batteries (which came charged) had individual voltages ranging from 13.33 to 13.64. After a 90 second charge (that was all it would take) and a short 1/4 mile test drive, the voltages ranges from 13.25 to 13.27.
Running the cart seemed to even out the voltage differences.
I then drove about 3 miles on my test drive. I check the wires and the batteries a few times, there was not the slightest bit of detectable heat.
After the test drive, total voltage was 53.0 volts, which according to a chart I found on-line indicates about a 80% charge level.
Sitting idle for a few minutes, the voltage rose up to 53.2 volts
I then hooked up the CC charger the same way I did with the lead acid batteries (still using the OBC).
The amp meter on the charger read 9.5 amps at the beginning, but I suspect it is not all that accurate. Toward the end, it was down to 8.9 amps.
After 57 minutes, the charger shut off with a voltage reading of 56.9 volts. After resting for 2 hours that voltage dropped to 54.3 with individual voltages between 13.40 and 13.77, which according to my chart indicates a 99% to 100% charge level.
I would have liked to see what would happen if I ran the batteries all the way down, but I didn't have the time and didn't want to get stranded when they died.
I am satisfied that my current setup will last many years.
Does anyone think I missed anything in my testing?
Ken
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