After some inconveniences with my first cell I've made it a habit to have a spare, charged, battery ready most of the time. After I found what have been as good as the original at a fraction of the retail phone store price, I now carry a backup with me and also have one in the charger to become the backup when the drained one rotates into the charger. It's proved to be flawless reliable a few time when extended use would have had me running for a power source somewhere. Especially when I was able to get a desk/caddy charger with a slot for the extra battery and two batteries for less than $20USD, (delivered!).

__________________