Apols for reviving an old thread but…
My Garmin Edge 810 (approx 5yrs old) has reached the battery replacement stage too. It is not clear to me that the OP ever got a battery source recommended.
Basically, my unit has been showing strange symptoms for the last year. Things like showing 54% battery then suddenly dying on a ride or showing 100% when I finished charging it & tucked it up in bed only for it to immediately die & claim the battery is empty the following morning.
I saw slight condensation inside the screen once on a sunny day. Left it to cook with the silicon covers open & it’s seemed ok since but that’s been the only ‘fault’. I reckon the battery has reached that dodgy stage as the only weirdness seems to be power related.
I used to be a surface mount repair technician, back in the day when things got repaired, so I’m ok with soldering & tinkering with electronics. But at the same time, I can’t be arsed anymore if the price is right.
So, advice in the thread ranged from ‘get garmin to do it’ to ‘I did it and it was ok’.
Can anyone give any more recent advice?
Can anyone recommend a battery source?
@breninbeener How did it work out for you?