Oct 17, 2012, 10:50 AM
Registered User
Joined Mar 2012
105 Posts
Sorry I haven't had time until now.
Quote:
 Originally Posted by hoppy Put that in terms of 1, 2, 3, and 4. Just to be sure, that would be one probe in slot one and the other in slot 2. and so forth Just move the probes down one pin at a time. 1-2 ?V 2-3 ?V 3-4 ?V
Okay, so starting from the red wire this is what I get:
1-2 = 3.86
2-3 = 0
3-4 = 3.86

Quote:
 Originally Posted by hoppy To test the main power leads, push a needle through the insulation of the red lead near the connector. Push another needle through the wire insulation on the black wire near the battery. It doesn't matter exactly, you just don't want them to accidently touch one another. Measure the voltage here. If it's 11.xx something, resolder your connectors. One or both of them is not connected.
I tried this and it reads 0.

Thanks.
 Oct 17, 2012, 02:13 PM Registered User United States, MI, Romeo Joined Apr 2009 3,568 Posts Sounds to me like you have a break inside the battery. The connection between cell 1 and cell 2 or between cell 3 and cell 2 has been lost. The cells are connected in series, which means the cells are connected in a loop, as in plus of cell 1 to minus of cell 2 and plus of cell 2 to minus of cell 3. You may have a break at either end of cell 2 within the battery.
 Oct 17, 2012, 04:35 PM Frankenstein recycled packs USA, AZ, Gilbert Joined Jan 2006 10,126 Posts Yulp. You did not mention that you shorted the wires when replacing the connectors in your original post. Battery is a gonner. Rick
Oct 17, 2012, 09:24 PM
Space Coast USA
Space Coast
Joined Oct 2000
23,158 Posts
Quote:
 Originally Posted by kjur Sorry I haven't had time until now. Okay, so starting from the red wire this is what I get: 1-2 = 3.86 2-3 = 0 3-4 = 3.86 I tried this and it reads 0. Thanks.
Yes, I agree that the pack has an internal open in the wiring. This has occurred when a modeler shorted a pack while working on it..

Did you perform these same checks on the second "dead" pack? What happened?