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OH1 low battery indication with certain Polar wrist units

When using OH1 as a heart rate sensor with certain Polar wrist units you’ll get a low battery indication when 40 percent of the OH1 battery is left. However, there is no need to stop your session, you still have a good couple of hours of battery left. This is just to let you know it may be a good idea to charge your OH1 after your session.

The following Polar wrist units will give you the low battery notification when 40 percent of the OH1 battery is remaining:

  • A300
  • A360
  • A370
  • M200
  • M400
  • M430
  • M450
  • M460
  • Loop
  • Loop 2

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