Fitbit battery failing quickly

[Hopefully]

I've had my surge since March 2015... awesome product -I love it. However the past 2 weeks or so, the battery diesn't keep it's charge. I charged it fully last night and today the watch turned itself off while I was out hiking. Any suggestions?

[SunsetRunner]

I had the same problem with my Surge.  It also started behaving erratically to the point that I had to get a new one.  Looks like the useful life on this model is about 18 months.

[SantiR]

@SunsetRunner @Hopefully Welcome to the Fitbit Community!  If you aren't tracking runs or exercises that use GPS, your fully charged Fitbit Surge should last up to 7 days. A fully charged Surge can track up to 10 hours of activities that use GPS. I recommend trying these tips to maximize the battery on the Fitbit Surge:

Consider these tips when you want to conserve battery life:

• Shut down your Surge when not in use.
• If you use the Fitbit app, make sure All-Day Sync is turned off. All-Day Sync increases battery drain on both your tracker and mobile device. To find the setting, open the app and tap Account. At the top of the screen tap Surge to see your settings, then scroll down. 
• (Android only) Turn off the Always Connected setting. Similar to All-Day Sync, it can reduce battery life.
• If you don't need heart rate data, change the Heart Rate setting to Off. When you turn it back on, use Auto. 
• Charge your tracker more often if you use music control frequently.
• If you have many silent alarms set, remove some. Each alarm you add up to the maximum of 8 reduces battery life by a small percentage. 
• Turn off Quick View. Since it causes the screen to light up when you turn your wrist towards you, turning this setting off may prolong battery life. To find the setting, open the app and tap Account. At the top of the screen tap Surge and scroll down.​
• Don't charge your tracker in extreme heat or cold. For best practices, check these charging best practices.

Hope this helps. Let me know how it goes!