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A123 Termination Voltage - 9/18/2011 3:46 AM   
tomfiorentino


 

Posts: 371
Score: 108
Joined: 12/28/2007
Last Login: 5/1/2013
From: New Hartford, NY, USA
Status: offline 		Hey guys,

I have a 2300mah A123 battery and I use the FMA Multi charger and use the universal 3-wire cell tap.  I always balance charge using the accurate setting.  Here is my problem:

When I put the battery on I check individual cell voltages.  They are exactly the same....3.2 something.  After a few seconds, the Balancer Status screen shows 0% and 99% and stays that way the entire charge routine; it always does this.

I go back to the individual cell voltage screen and watch both cell voltages come up almost simultaneously.  One jumps...then the other...back and forth.  Except when I get towards the top of the charge.  Then cell 2 (where the balancer is showing 100%) jumps one thousandth of a volt about each second until it peaks voltage at 3.651.  Cell 1 (where the balancer is still showing 0%) hardly moves.  Maybe it will creep a little bit, but since cell 2 is peaked out the charger slows waaay down and is only charging at about 100ma sometimes 75ma....basically, nothing is going to cell1 and cell 2 is getting 75ma until the charger basically times out.  Cell 1 voltage only gets to 3.362 plus or minus.

I have tried pulling 1000 mah off the battery and then charging back up to see if that made a difference but I pretty much get the same results.  Also, same results if I go through my switch port or pull the battery and charge directly.  Crazy..

I have a 1100mah A123 battery and that charges fine.  The balancer shows different percentages and the voltages top off exactly the same!

Any thoughts?

Thanks,

Tom



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RE: A123 Termination Voltage - 9/18/2011 1:43 PM   
Capt Lou


 

Posts: 536
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Joined: 1/3/2007
Last Login: 10/14/2012
From: Manahawkin, NJ, USA
Status: offline 		Tom:

Contact CellPro at www.fmadirect.com They provide excellent customer service and will answer your question.

Capt Lou

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