batteries

A quick inventory of my gadgets and I realized I had:

1. samsung galaxy, LG arena, sony E yari, CSL iphone lookalike, HTC

2. x-mini ii speaker

3. psp

4. sony ereader

5. china mp3 player

all these things need battery and i get very frustrated when i run out of battery when i need to use them. so i'm coming up with a charging schedule, based on their frequency of charge (different device deplete differently):

weekdays office - galaxy, psp, ereader

home - china mp3, x-mini speaker

looks like i need to carry lots of cables around now :(