A123 charging problem - RC-Monster Forums

tc3_racer_001 · 07.28.2008, 09:40 PM

also, the charger has protection which wont charge any damaged batteries, so perhaps this is the issue???

JThiessen · 07.28.2008, 10:23 PM

Quote:

Originally Posted by tc3_racer_001

also, the charger has protection which wont charge any damaged batteries, so perhaps this is the issue???

I think that is what the charger is seeing. It thinks its a single cell (3.3V). I have one on the charger right now on Nimh at 1.0A, with the balancer connected, but after 45 minutes, its still only at 3.5V.

tc3_racer_001 · 07.28.2008, 11:45 PM

perhpas try running it again??? just a suggestion. looks stuffed tho :(

jhautz · 07.29.2008, 03:34 AM

Do you have a volt meter to check what the voltage of each cell is at the balance tap? If one cell is totally dead and not taking a charge any more your effort is futile.

lincpimp · 07.29.2008, 04:29 AM

Not that this will help much, but I did find something interesting with my hyperion 5i chargers. They will attempt to repair packs that go below 3v per cell.

I over discharged an orion 3200 pack, down to 5.5v. The charger fired up and trickled out a low amp charge until the voltage came up and then charged normally.

I have also put single cells on these chargers that were under 2volts, and the charger has charged them up too. Same low amp start, until the voltage gets up a bit. Low amp charging takes a long time, sometimes days...

JThiessen · 07.29.2008, 03:10 PM

Quote:

Originally Posted by lincpimp

Not that this will help much, but I did find something interesting with my hyperion 5i chargers. They will attempt to repair packs that go below 3v per cell.

I over discharged an orion 3200 pack, down to 5.5v. The charger fired up and trickled out a low amp charge until the voltage came up and then charged normally.

I have also put single cells on these chargers that were under 2volts, and the charger has charged them up too. Same low amp start, until the voltage gets up a bit. Low amp charging takes a long time, sometimes days...

I think it was trying to do this. After about an hour on the charger, it would stop charging and gave a reading of "end flat check" or something like that.