Slow 2000 48 v Club Car

[Epb]

Hook your dvm to each battery while driving down the street and record lowest reading of each

[mattoxh]

TEST RESULTS
Battery not charged since last test.

PACK CHARGE 48.6
Individual Battery Before Test. Under load. After Test
1. 7.96 7.3 7.9
2. 8.1 7.6 8.1
3. 8.1 7.9 8.1
4. 8.1 7.7 8.1
5. 8.1 7.9 8.08
6. 8.1 7.8 8.0

Pack Voltage After Test. 48.9 v

Thanks for any suggestions

[Bwsooner6]

Sounds like it's time for new batteries

[mattoxh]

The Batteries are 1 yr old and will charge to over 50 v.

[Bwsooner6]

Originally Posted by mattoxh

The Batteries are 1 yr old and will charge to over 50 v.

Weird.. I recently had problems like this and posted numbers like those and it ended up being the batteries. I really hope you have better luck

[mattoxh]

As much as I hate to buy new batteries I will if they are bad. What is the indicator that suggests I need to replace them in an effort to learn something. Should I further check each battery with a hydrometer or load tester?
Thanks for the suggestions.
H

[joesam]

TEST RESULTS
Battery not charged since last test.
PACK CHARGE 48.6

I think people might be mislead since your batteries were not charged. 48.6v (on the surface) appears to be a very low starting voltage - but that's because battery tests start with a fully charged, then rested pack.

In your case, you appear to have started with a well discharged pack. At 48.6v you are seriously discharged to roughly 50% capacity.

Can you charge them back up - and leave them sit for 8 hours or so (off charger) - then advise the (8-10 hours later) "rested" voltage? Then test each single battery under load (eg. climbing a hill). I know its painfully slow to do this. But by testing in a careful sequence, the numbers will have much more meaning, and you will really know if its batteries or not.

[mattoxh]

I will get back on them this weekend and advise. Thanks

[Epb]

#1 definitely has issues imo and 2 & 4 are close to consider not healthy since they dropped .8 from full. But u do need to charge first and rest then recheck. Btw this is imo.

[mattoxh]

Fully charged batteries: pack charge 51 v. Individual Batteries 8.5 at rest. Under load all dropped 7.9-8 and recovered to 8.5. Checked each with a load tester and all appeared ok.