Charge 2 heart rate accuracy

[BuffOrpington]

This morning I was on the elliptical for 30 minutes. It was a high intensity workout. The monitor on the machine had me up to 140 bpm, yet my Charge 2 had me maxed out at 114 and didn’t even register my session as exercise. Why?

Moderator edit: updated subject for clarity

[AlvaroFitbit]

@BuffOrpington It's great to see that you've visited the Fitbit Community!

Let me help you with your Charge 2 heart rate reading and activity detection. For the heart rate I suggest you clean the back of your device with cotton and rubbing alcohol and restart it. Turn the heart rate off, save and sync then turn it on save and sync again. Also check these tips to improve the heart rate reading on your device. 

Regarding the activity detection, your device detects activities based on the motion on your arm. The automatic detection is a feature called SmartTrack. For example when using the elliptical machine make sure you have the moving bars so your device detects the motion and record the activity itself, once an Elliptical activity is saved on your account it should show on the Recent Exercise area. If your heart rate is high but there isn't much motion (yoga, weight lifting, etc.) then these activities will be difficult to be detected by your device. Still you can manually log your activity so you have a record on your account or use the activity mode on the device itself.

Let me know how it goes.