Chrome you really want to improve your battery? :P. May I suggest: http://www.mugen-power-batteries.com...okia-n900.html

Ugly..but plenty of juice for the processes to eat.

And here's my opinion:

These could just be listening, and use minimum processor, or they could be coded wrong andcheck every second..which really eats up your battery:

Battery
Counter
Custom Operator Name Widget
DateToday Home Desktop Widget
Facebook Desktop Widget
Facebook Widget and Photo uploader
Load Applet
Personal IP Adress
Proximityd
Shaded chat theme

Personally I don't believe any of these is a a problem..but they might be.

Said to never close:
Healthcheck
Flash Launcher

These are said to have problems that when you open them and close them, the process remains open, eating up CPU usage of course.