Originally Posted by swamp2
Hmmm, maybe I should have been more specific. I should have asked if Braille or HP specifically suggests not running a 3121 in an E9X with CA. All you website says is the lower capacity 2015 is the minimum for the E9X.
No one knew there is such a large current draw on the E9X M cars. And to date, no one can verify what the draw is after all modules go to sleep. If that number is higher than double of the 40-50 milliamps, I would be worried when instaling a Braille light weight battery.