Cass, you don't by chance have a volt meter, do ya? I'm curious to what the cut off voltage is when it "finally died". What was the TH like in the last hour or so? Drastically less than the first hour? I have no use for batteries once they drop below 3.7 or so.
I could get 6 hours out of my JS but usually I charged it after 3 or so b/c the TH faded.
And, I'm wondering (but I will find out) how many cycles this new battery has in its life before that 10 hour mark is no more.
Hey
I do believe the eGo is constructed so that it doesnt drop before its last breath - ie. it will utilize all the power, and the second you notice something is not as strong as it normally is, it dies right after that.