Varta battery refused to die even after 5years mannn that’s a wow ..to add on I don’t use my car often i use fireblade as my daily commute for the last two years..
My XM3s went from a good 6 hour run time down to 2.5 hours in about 20 months. The last month alone has seen 30 mins wiped off them.
I went with the Varta A4 models bought from a Czech supplier called [Battex.cz](https://Battex.cz).
Varta are a pretty decent brand of battery (although their consumer AAs suck), would not expect it from them.
fits perfectly in a NB
I just replaced my dead Zenipower OEM cells with Varta 1254 A3. So far the battery life is exactly as specified by Sony. We'll see if the Vartas can handle the charging regime.
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'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.
I just now successfully replaced the battery with a varta cp1254 a4 due to the right one going bad after a year of use, testing it for a few hours now and it worked!
Another is that the OEM Kia battery just sucks…they fail. The fix is to get a new battery that doesn’t suck. Kia will replace the dead one within warranty but you’ll get another dodgy OEM battery. Most people seem to trend towards buying a good AGM aftermarket battery for this.
Well it's 30 months old and is still 6 months under the pro-rated warranty. Took it to a dealer, they replaced it and said it would be 226 dollars! I asked if they checked the warranty and the technician stepped away and came back 20 minutes later. "kia corporate declined the warranty on your battery".
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