I just did some checking over on my PC545 that had the overvoltage. It seemed at a pretty reasonable SOC, 12.92v. I did the conditioning cycle anyway and the discharge capacity showed it to be about 10.5Ah ( it’s nominally supposed to be 13Ah ). The 5A charge-up calculated out at about 14Ah, but charging is harder to get a good figure on capacity. I’d conclude that I’ve got my lost 20% of capacity back with just one discharge/charge cycle.
My mate was about to throw his PC545 out a few years ago cos it couldn’t spin his Speed Triple over properly any more, but gave it a single conditioning cycle. It recovered and he’s still running it. It’s 13 years old now.
Max, Kevin, your ‘knackered’ batteries might be recoverable.
Conditioning charge?
Andy, I have another very dead PC545 battery
Discharged voltage is 10.89 v !
I will try the Ctek charging, you suggest using 5 amps, but not the Ctek reconditioning cycle.
Please confirm my understanding is correct
Thanks
Oooh, that is low OCV. I think that may have lost a cell, and it might be beyond rescue. That’s what happened to the one I lost.
Still, worth a try. Yes, you have it correct. Charge on the ‘car’ ‘AGM’ setting but not the CTEK ‘recond’ setting. Let it sit for a few hours in the float mode. I don’t know what this does but Odyssey seem to recommend it. I suppose it makes sense to let the chemistry settle.
To condition, discharge through a light bulb 'til 10.00v and then immediately recharge on ‘car’‘AGM’.
Good luck.