HTC 10 User Manual page 141

Limit background data and sync
Background data and sync can use a lot of battery power if you have many apps syncing
data in the background. It's recommended not to let apps sync data too often.
Determine which apps can be set with longer sync times, or sync manually.
In Settings, tap Accounts & sync and check what types of data are being
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synced in your online accounts. When the battery is starting to run low,
temporarily disable syncing some data.
If you have many email accounts, consider prolonging the sync time of some
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accounts.
In the Mail app, select an account, tap
and then adjust the settings under Sync schedule.
When you're not traveling from one place to another, sync weather updates of
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only your current location, rather than in all of your named cities. Open the
Weather app, and then tap
Choose widgets wisely.
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Some widgets constantly sync data. Consider removing the ones that are not
important from your Home screen.
In Play Store, tap
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avoid automatically adding Home screen app shortcuts whenever you've
installed new apps. Also tap Auto-update apps Do not auto-update apps if
you're fine with updating apps from Play Store manually.
Other tips
To squeeze in a little bit more battery power, try these tips:
Tone down the ringtone and media volume.
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to edit and remove unneeded cities.
Settings, and then clear Add icon to Home screen to
Settings Sync, Send & Receive,
Battery 141