Charging question

FlyingRN

98 DS bought in January with '10 Trojan batteries. Rebuilt cart, plugged everything in and let it charge, battery charger only dropped down to 5 and stayed there. Drove it around for a while, it did great, then put it back on the charger overnight, it did the same thing, charged down to about 5 amps. And stayed there. Is this normal?

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93yellowclubcar

A charge cycle can take up to 16 hours to complete, how long did it run for?

scottyb

If the charger hangs on 5a past the 18 hour mark there is a good chance you have one or more bad batteries. Verify this by checking the pack voltage with the charger plugged in and hanging on 5a past 16hrs. Post the voltage reading here.

FlyingRN

1=9.53. 2= 9.55 3=9.57 4=9.61 5=9.84 6=9.53. This is after 18 hr charge, charger (club car power drive) plugged in, 5 amps showing on gauge. Thanks for your help!

TahoeDawgZ71

You're still below the minimum cutoff voltage. The on-board computer won't trigger a charger shut down until it reaches 58.3V.

joesam

Not hijacking the thread, Tahoe - but I had the impression (from reading, not experience) that OBC's almost "time-out" after 16 hours; or is that just a general rule-of-thumb? Or does it react to resistance to shut down? If not limited - it seems to me the charger could pose a boil-out-all-electrolyte or overheating issue when a battery pack had a failed cell or two within it?

TahoeDawgZ71

I've seen OBCs that time out and I've seen OBCs that don't time out. I've never been able to narrow it down to a particular group or version of the ones that do or don't.