2012 07 11

Written by pc-import on July 11, 2012 Tags: Uncategorized

Mystery Missing Volts – Solved

Plot after cleaning the terminals with alcohol and re-assembling.

Plot of Amps (blue) vs cell terminal voltage for Cell 11. The reading sags under heavy load.

Disassembling the terminals (note these were pre-assembled in the factory) I discovered what appears to be RTV or something like it... whatever ever it was it didn't conduct electricity very well...

Shot of terminal. The only contact was the actual screw threads, this explains the voltage drop.

From the datasheet. Note even at 3C (300A), should never go below 3.0v until you are beyond 80% of capacity.

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