Tom, et al 

In another Concorde document they provide a chart showing charge voltage as a function of battery temperature.  The 14.1 V really only applies at 25 degC.  I can't figure out why they don't qualify the 14.1V in the reference you cite, as well as others, with a temperature value.  This could really affect batteries installed in engine compartments. 

 

Leighton,

-another possibility.

Have you checked your charge voltage with a calibrated voltmeter?  I found my Electronics International voltmeter to read low by 0.2V and the JPI EDM low by 0.1 V  -both leading to higher than intended charge voltages initially.  I had adjusted the voltage according to the EI.  I too fried an early battery during a summer of instrument approaches while charging at what was really 14.3V with OATs of 100 degF.  -felt like 120 degF inside.

Chris 

 

 

 

Chris Zavatson

N91CZ

360 std.