I love the phone but the battery life sucked when I got it. (had to charge after 8 hours) After doing some reading this is what I have done and it appears there is some increase in battery life (almost a whole day without needing a charge). I am forcing myself to keep opening 'advanced task killer) and killing the programs that are running. I do this, every few hours. I also changed my settings to check most of my email accounts only every 4 hours instead of every 15 minutes (except for my most important one). If anyone can figure out how to keep sprint navigation from automatically starting up I would appreciate your help. Seems like it starts almost as soon as u shut it down. I also shut down my GPS tracking thnking this may help...
Personally, I've NEVER used any "Task Killer" applications, but these following steps I have used to greatly enhance my battery life.
*Keep in mind that you'll have to manually update every feed/news/weather on your phone, BUT the good thing is that nothing is constantly accessing the network to drain the battery.
1) Turn off the “Always-on” mobile data connection.
On the Home screen, select Menu => Settings => Wireless controls => Mobile network settings and de-select “Enable always-on mobile data”. This tweak probably has the biggest impact on battery life.
2) Disable Wireless network usage for positioning purposes
This can be disabled via Menu => Settings => Location => Use wireless networks. This will turn off the anonymous (?) Google location data collection that uses the wireless data connection frequently. I still keep the GPS tick box checked as it is not an always-on configuration. Any app that will need a location will turn on the GPS separately. Please note that turning off wireless network usage for location purposes will slow down the GPS positioning fix when needed but that is a trade off I’m ready to do.
3) Turn off “Background data” usage (but not if you use Google services!)
This checkbox is hidden behind Menu => Settings => Data synchronization => Google => Background data. This will minimize background data usage that keeps the Hero’s network connedtions active and use a lot of power during the day. Note! If you are using Gmail, Calendar and Contacts on your Hero you need to have this enabled or it will disable automatic sync with Google online servers.
4) Always keep Wi-Fi off when not in use – automate this with Y5 Battery Saver
Personally, I have my Wi-Fi connection turned off all the time as I have a flat rate 5 Mbps 3G connection providing sufficient bandwidth for anything I do on my Hero. The Wi-Fi can be disabled from Menu => Settings => Wireless controls and de-select “Wi-Fi”.
If you still want to use your Wi-Fi connection I highly recommend installing the completely free Y5 Battery Saver application. It automatically turns off the Wi-Fi when when out of range and enables it again when you are close to known access points to save battery life . Please not that this app itself will use some resources and can slightly reduce battery life but you should still be on the winning side if you are away from your known Wi-Fi networks most of the day.
5) Always keep Bluetooth off when not in use
I tend to always use a Bluetooth headset when on the phone during the day so this is a tricky one for me. On the other hand, in the evenings I usually use the simple Bluetooth on/off toggle widget by HTC for controlling this. The geeky way of doing the same thing: Menu => Settings => Wireless controls and de-select “Bluetooth”. A bit of manual work but I’m fine with that for now.
6) Avoid usage of push or very frequent email polling – configure it to sync every 15 or more minutes
The default HTC mail client does not by default have push or “always-on” mail configured. Having that would keep the mobile network connection active all the time and drain the battery pretty quick. My Hero fetches email every 15 minutes which is often enough when I’m out and about. In case I’m waiting for something urgent I can always do a manual sync to get peace of mind. Mail sync frequency is set through (Menu =>) All programs => Mail => “Menu” button => More => Settings => Send & Receive => Set Download frequency => e.g. Every 15 minutes. I have also kept the Mail size limit at 5 KB as larger downloads consume more battery power.
7) Turn off automatic Weather updates
The weather widget on the Hero is also using the network connection frequently even if weather forecasts are not updated that frequently. For me it tries to get new weather data every time I happen to scroll by the widget on one of my home screens. Once again, this turns on the network connection. These triggered updates can also momentarily freeze the UI and that is why I decided to disable automatic updates and instead just press the the little update icon on the bottom of the Weather widget when I want to see the latest forecast. Yes, it is one extra click but personally I not hysterical with always having the latest weather forecast in my face. Do this from (Menu =>) All programs => Weather => “Menu” button => Settings => disable Update automatically.
Set a reasonable update frequency for Twitter, Flicker and Facebook
The HTC Hero provides great integration into social network sites such as Facebook and Twitter. Of course, this integration needs to constantly ping network severs that use battery power. Personally, I’m much happier to get updates every 2 hours and not every 15 minutes as it I get less interruptions during my day. For changing Twitter settings try (Menu =>) All programs => Peep => “Menu” button => Settings => Send & Receive => Check frequency => Every 2 hours. The Facebook and Flicker update settings are hidden in the phonebook, i.e.(Menu => All programs =>) People => “Updates and events” tab => “Menu” button => Data connection settings.
9) Get a fast mobile network connection
I realized when upgrading from a 384 kbps to a 5 Mbps mobile connection that as the loading times as much, much faster, making the various automatic and manual updates much shorter timewise. In the end of the day, this is not a deal breaker but every little helps when it comes to battery life tweaking.
With these settings I’m easily getting trough a full day of Androiding with a small disclaimer regarding my talking habits that some days drain the battery much faster.