Let me repeat what carbonfreeze above said:
IF YOU INSTALL THIS COMBINED BATTERY APPLET ON THE SHARP ROM ON C3000
YOUR SYSTEM WILL FAIL TO REBOOT.
I had this happen to me. The symptom is that the Japanese "wait a few minutes..." graphic
comes up, then it flashes to a black text screen for an instant, then back to "wait a few minutes..."
and does this endlessly. I didn't know what caused it since I had installed the bad battery applet
some time ago, before doing a reboot.
I was able to recover without doing a full restore, by removing the power and battery,
holding down "D" and "B" keys, reinserting battery, pressing the power button if it hadn't
already come on, and keeping the keys down until I started seeing text messages
from init. (This process is flakey and sometimes you have to do it several times until
you get text prompts.) Then login at the login prompt, as root. Then you can mount /hdd2,
cd to /hdd2/QtPalmtop/plubins/applets/, and remove
the libcombbatteryapplet.so.1.0.0 file and the symlinks to it. Then estore the symlinks from there to /hdd1/usr/QtPalmtop.rom/plugins/applets/libbatteryapplet.so.1.0.0, the original Sharp ROM battery applet .
This made the system able to boot again.