My dealer replaced the battery, updated the firmware and did a parasitic drain test.
Owner reviews for battery
I just ordered the energizer lithium fob battery, will see if it lasts longer than the regular energizer which in my case was 3 years
Adding my experience here for others that may stumble upon the thread. I was having really bad+inconsistent battery life with my left and then right buds, where they would die in less than hour. I replaced the both earbuds original batteries with the Varta CP1254 A3 battery and also did a hard reset.
It took a little over an hour to do and finally the battery life is decent again. I was able to run them for a good 3 hours on noise canceling with max quality settings and it's a night-and-day difference.
I did and what a misnomer 'dry cell' is. Yes they are great and expensive. Both standard and 'drycell' have liquid eletrolyte so it's weird to start talking about 'drycell'
I didn't get long lasting power from "any brand name". Switching to Energizer or Panasonic did much better, like 2 years.
I've had some good luck with OEM Vw therye where either Varta or another OEM factory battery. 7 years on one...and also 3 years till 50%, lots of variables, to make a battery last or not last.
My old car had an Optima Red Top in it for 10 years and never had a battery issue- but again, sitting on a tender most of the time.
The red top really isn't that special and optima's tech in general is more beneficial in regard to durability than current delivery.
Replaced my OEM battery with a yellow top and it lasted less than a year. Complete junk imo.
Subaru has had a problem with their electrical systems since 2014. Batteries last 2 years, max. 2018 legacy is on its third battery in 4 years. 13,000 miles. $600.00 in batteries.
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