My dealer replaced the battery, updated the firmware and did a parasitic drain test.
Pros: free replacement, updated firmware
Vehicle:
Subaru Outback
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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
Pros: lasted 3 years
Vehicle:
Nissan Leaf
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.
Pros: decent battery life
Cons: bad battery life
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'
Pros: great and expensive
Cons: misnomer 'dry cell'
I didn't get long lasting power from "any brand name". Switching to Energizer or Panasonic did much better, like 2 years.
Pros: better, lasted 2 years
Cons: not long lasting power
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.
Pros: good luck, long lasting
Vehicle:
Volkswagen Golf
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.
Pros: lasted 10 years
The red top really isn't that special and optima's tech in general is more beneficial in regard to durability than current delivery.
Pros: good durability
Cons: not special, poor current delivery
Replaced my OEM battery with a yellow top and it lasted less than a year. Complete junk imo.
Cons: short lifespan, complete junk
Vehicle:
Ford Focus
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.
Cons: batteries last 2 years
Vehicle:
Subaru Legacy
Mileage: 20921 km
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