I just replaced my xm3 batteries (they are cp1254a3 with 60mah) and I replaced it with the newer version (cp1254a4 with 74mah). No issues and more capacity.
Yep. Varta is a good battery. My battery died this year in March. I replaced it and paid 800 for a Varta battery for my dodge charger. So far so good!
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.
This is really straightforward to do. I replaced mine last September and was concerned about coding or needing to go to the dealer. My 2017 required none of that. Just take the old battery out and put a new one in. You'll have dash lights on afterwards, but all you need to do is turn the wheel all the way to one side and then the other.
The factory battery is rubbish though. So get a better branded battery - varta or Bosch are good.
Service guy just stopped over and confirmed the battery was bad. Replacement installation in progress.
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