Robert asks... > If you carry a spare battery for your Ti and you know it won't be used > is it better to leave it charged or without charged? Why charged, of course! It's not much use otherwise unless you like to carry dead weight with you :-) Seriously, I carry a charged spare battery with me most of the time. I swap batteries every 2 or 3 weeks and each one happily has 4 glowing dots of power when unused. Over 8 months now and I've not noticed any degradation of useful life. Regards, Jim