You can limit battery use by switching off: Use wireless Networks; Use GPS satellites; Wi-Fi; Bluetooth; reduce Display Brightness to minimum. If and when required you can then enable what is required and then to remember to switch it off again after use. Finally it is also worth making sure that after using any applications, you check and turn off any running active applications when phone is in standby mode. Finally ensure the display switches off after a minute or so of non-use.
AFAIK the tools will only just do the above.
It is worth downloading the following app:
Battery Widget which gives you % of battery power left.