Sense 2 battery draining too fast

[Just-express]

My Sense 2 battery is draining in under 48hrs. When initially purchased around 18mth ago it would last almost a week. I’ve tried all the troubleshooting suggestions but it’s not making any difference. Really disappointed in the quality of the device if this is normal. 

[MarioSFitbit]

Hi @Just-express and welcome back to the forums. 

I appreciate your message, and I'm sorry to hear that your Sense 2 battery is draining in under 48 hours. 

Thank you for the troubleshooting steps you tried. 

Please confirm if you already verified if you can update your phone's software version.  For more information, refer to Check & update your Android version or Update your iPhone or iPad.

I also suggest reading the following advice: Tips to extend your Fitbit device's battery life.

Finally, could you please confirm if you restarted your Sense 2? How do I restart my Fitbit device?

[Just-express]

Hi Mario

I can confirm that I’ve done all of the suggestions you’ve made. I’m not sure how updating my iPhone has any bearing on the battery in the Sense 2 tracker, however I’ve done it nonetheless. 

[daelitesmom]

I'm having the same trouble, I charged my Sense 2 to 100% this morning (3/6/2026) and by 10pm tonight it's already at 75%??? No settings have changed and I have the latest update which seems to be, coincidentally🤔🤔, when my Sense 2 has had battery draining issues.

[Just-express]

I charged mine to 100% this morning also. By 3pm it had switched off and when I tried to switch it on it kept giving me the red “X” on the watch face. Then, when I put it on charge it jumped straight back to 66% charge - still too low for only a few hours use, but clearly a second fault in the device. 

[Just-express]

Hi Mario 

I've also now had a second issue with my Sense 2. I charged it to 100% this morning, taking it off charge around 10am. By 3pm it had switched off and I was getting the red “X” when I tried to switch it back on. Then, when I put it on charge it jumped straight back to 66% charged again. 

[MarioSFitbit]

Hi there and welcome back to the forums! 

I appreciate your messages a lot, and I'm sorry to hear about this situation. 

@daelitesmom: Please confirm if you followed the steps above. 

@Just-express Since you have performed all the suggested steps, my next advice will be to contact support, since they have the proper tools to find your options. To do so, please fill out the information required in the following link: Contact us.

[daelitesmom]

I have gone through all of the options for restarting, etc and the battery is still draining insanely fast for example I put the Sense 2 on the charger yesterday morning about 10am when I went back to check it in the evening it was only at 92% so I reconnected tye charger. I fell asleep so when I checked it at 7am it was at 100% FANTASTIC and put it on (100%) but at this moment 11:19am EST my Sense 2 is currently at 79%... in four hours it dropped 20%. I have the same settings I've always had for several years and it just seems like the most recent OS update has killed the battery. My Sense 2 was purchased in 2023. 

[daelitesmom]

Left my Sense 2 in my truck for two days so it was de@d, put it on the charger last night and first thing this morning it was 100%. Put it on and within 20 minutes it was down to 92%, 15 minutes later it was down to 83%. Charged it again and I've been wearing it an hour and it's concurrently 85%. Insanity.

[Annastaishia]

Hello did you ever find a solution? My sense 2 has started doing the samething.