open
short
loss of capacity
something else?
.......................................
in the Volt, are individual cells managed? or in groups?
can bad cells be isolated?
........................................

my current understanding is that over time,
capacity drops to 2/3 of original, but the cells are
still usable.
..........................................
thanks for any comments.

It fails as an open circuit ... which means unless the BMS is designed to re-route the series string around the failed cell ... like x-mas lights ... the whole series string abruptly stops working no matter what the condition is of the rest of the series string.

Tesla BMS for instance I was told can route around a failed series to the other series strings it has in parallel with it.

I don't know how they are setting up the BMS in the volt yet... but the word has been that it is just one large series string... and not the multiple parallel sets of series strings that Tesla is using.

It's true. My lap top is about a year and a half old. I had over 90% of original batter capacity according to a program I have that reads the true battery capacity. One day a couple months ago, I was using it and it dropped down to the 30% range. I lost about half the cells in 10 seconds. I sure hope that doesn't happen for people driving EVs. Chevron would be laughing their butts off, especially as they wave their NiMh patent in everyone's faces and then snatch it back when someone tries to reach for it.

It's true. My lap top is about a year and a half old. I had over 90% of original batter capacity according to a program I have that reads the true battery capacity. One day a couple months ago, I was using it and it dropped down to the 30% range. I lost about half the cells in 10 seconds. I sure hope that doesn't happen for people driving EVs. Chevron would be laughing their butts off, especially as they wave their NiMh patent in everyone's faces and then snatch it back when someone tries to reach for it.

The L-I dilemma may be, but by that time EEStor's EESUs may be developed and then we'll be the ones laughing our butts off and telling Chevron to stick their N-Mh patent up their butt along with their gasoline.

The L-I dilemma may be, but by that time EEStor's EESUs may be developed and then we'll be the ones laughing our butts off and telling Chevron to stick their N-Mh patent up their butt along with their gasoline.

That's a big "may".

The L-I dilemma may be, but by that time EEStor's EESUs may be developed and then we'll be the ones laughing our butts off and telling Chevron to stick their N-Mh patent up their butt along with their gasoline.

Except that Rolf is further ahead with his Quantum Battery than EEScam.