Forerunner 735xt battery

Try rebooting.

Thanks, tried both soft and hard reboot but still no difference. No idea if batteries need/can be replaced?

Eventually they die. Mine lasted 3.5 yrs but had degraded toward the end. They cannot be replaced. Contact Garmin - they may offer you a fairly discounted refurb (my replacement has been going strong for 15 months) or a discount on newer models.

Thanks, this was a refurbed replacement for a faulty 735xt but getting a bit peeved that they only seem to last a couple of years……..might move to Polar or Suunto

In the last couple of days my garmin 735xt battery had gone from always lasting at least a full day with 2 or 3 activities daily,  to draining within 2 hours of charging.   The screen started flickering in the last two weeks but the battery drain started 2 days ago.   The watch is 3 years old in a few weeks.