Signed up just to reply on this thread too.
I’ve been facing this exact issue for a while now. Left earbud, same as in previous commenters’ cases, abysmal battery life - around 20-15 minutes both indoors and in cold weather. Factory reset didn’t help.
As a last resort, before submitting a warranty request, I decided to try and switch the ANC/transparency mode off.
Lo and behold - both pods’ batteries dropped by only about 5-10% in 2 hours while on YouTube.
Nothing Support Team, this screams “firmware issue” to me. Is it going to be addressed? I’ve only had the problem for a few weeks, but people have been posting about this stuff since autumn.