how to increase battery life
My battery life suddenly decreased substantially. Just in the last couple of days
iPhone 4S, iOS 5.1
I've seen the same phenomenon as well. The trackpad batteries sometimes last a month or more and then suddenly they only last 3 days. I haven't pinned down what's causing the devices not to go into low power mode yet, but certainly a software bug. Until then I use rechargeables and always have some ready.
Captfred