Battery Life is a major problem for a lot of people. I think it comes in 4 different packages:
1: Battery : Do you drain the battery to zero or never let it drain down
completely ? I do not know the definitive answer but this is the
recommendation of some battery experts:
Lithium-ion batteries should never be depleted below their minimum voltage (2.4 to 2.8 V/cell, depending on chemistry). If a lithium-ion battery is stored with too low a charge, there is a risk that the charge will drop below the low-voltage threshold, resulting in an unrecoverable dead battery.[citation needed] Usually this does not instantly damage the battery itself but a charger or device which uses that battery will refuse to charge a dead battery. The battery appears to be dead or not existent because the protection circuit disables further discharging and there is zero voltage on the battery terminals.
I have not tried to drain the battery yet.
2. Charger : Many people who have bought after market chargers have had
interesting experiences from auto phone calls and emails made in
sleep time to discharging while plugged in etc. I have several
after market chargers, some work and some do not.
3. Killer Apps : I believe they are helpful although they also drain battery.
Some people feel that the LINUX system auto shuts down
unused programs. I am not sure.
I think TasKiller and Adv Task Killer work but use more battery.
I personally use Adv Task Manager and find it works well for me
4. Usage : Of course the biggest drain is usage. Any battery no matter how
good will drain with heavy usage. i.e. game playing, listening to
music, gps, bluetooth, wifi etc. The main drain is how long is the
screen on.
Conclusions: 1. Battery: defective ? Replace. Drain or not drain ???
2. Charger: defective ? Dispose
3. Killer apps: Do you need them ? I like Adv Task Management
4. Usage: Review usage in Settings/ App - Spare Parts
Modify especially in areas of low coverage. A lot of
the programs kick in automatically and if your
coverage is not good it continues to search and
uses battery. That is what the Killer apps do.