Sense: Had a full charge, died in the pool, severely overheated on charging.

[SunsetRunner]

Hi there. My Fitbit Sense (purchased on release 2020) has completely died. I wore it a day ago when going swimming. It's been in water before without issue.

When I went to the gym, the device had about an 85% charge. I wore it into the pool, swam for about 25 minutes, stopped in the sauna for about 3-4 minutes, then saw that it had totally died.

When I got home, I put it on its charger. A few hours later, I went to check its charge and realized the thing was blazing hot - I nearly burned my hand - so I removed it from the charger. It's now cooled down, but no amount of fidgeting/button pushing can get it to turn back on.

Is it possible that it completely shorted out from having gone into a hot room after being submerged? That shouldn't have caused anything. I also admit that I didn't look at it before entering the sauna; it might have died in the pool.

Has this happened to anyone else and is it salvageable?

[LokeAa]

@SunsetRunner  I would think water has leaked into your Sense, based on the fact it became "burning hot", indicating a short circuit.

[Clove6060]

I think the sauna may be outside the operating temperature. See page 76

https://help.fitbit.com/manuals/manual_sense_en_US.pdf#page76

[LokeAa]

@Clove6060 , I don't see why ourtside operating temp should "kill" the device. It's like when you forget your fun on the dashboard on a warm summer day. It comes back to life when temp drops. Besides, it doesn't explain the short circuit.

[Clove6060]

@LokeAa 

I can imagine a steam room where high heat compromises the glue/seal and the sauna humidity/moisture invades the watch. Not a good combo in my mind. 

Most saunas are 150-175 Degrees Fahrenheit or higher and Infrared saunas are typically 120-130 Fahrenheit.

[Gr4ndp4]

Hi, @SunsetRunner welcome, I think the advice about the sauna temperature might be right. You could talk to "Customer Support" here to get their thoughts. I recommend you use the chat facility or phone for a prompt response.

I hope this helps

Cheers

[SunsetRunner]

Thanks everyone. It's definitely a short circuit, not fixable. I'll contact Customer Support to determine what might have happened and make sure not to let that happen with another model.

[Mabel2]

This happened to me too! It was fully charged, then i went swimming for 20 mins and it died so I tried to charge it and it was burning hot. I disconnected it from the charger as soon as i felt the temperature and now a day later I've tried charging it again and it is still completely dead after 5 hours on the charger.

[Gr4ndp4]

Hi, @Mabel2 you should not attempt to charge your Sense, Contact Customer Support for assistance

Cheers