I have a 2015 V6S and am getting the 'low battery, start the engine' message up on my dashboard display.
I have looked at various websites to find the best battery I can get and have seen on Euro Car Parts that they are recommending either an Exide AGM stop/start 019 95AH 850CCA @ £364.99, a Bosch S5A13 AGM stop/start 019 95AH 850CCA @ 424.99, a Varta AGM stop/start 95AH 850CCA @409.99 or a Lion AGM stop/start 019 95AH 850CCA @ £141.79!!!!
All state they come with a three year guarantee and all seem to have the same specifications.
Obviously the Lion battery will be the cheapest, but I should get the same power output as all the more well known brands. Has anyone tried the battery or have any comments??

 

Per my mechanic and his experience the best normal batteries are Exide. I got EXIDE AGM, 96Ah, 12V, EK960 for V6S and works well.

 

Have a look at the Tayna website & compare their prices.
https://www.tayna.co.uk/

 

And use Youtuber Number 27's discount code.

 

It seems a bit premature that you battery would be failing if you have a 2025 (Is it a 2024? There are no 2025s). Before you buy a new battery check to make sure you are not having the known F-Type battery issue. After you lock the car for ten minutes does the red warning triangle on the dash go out? If not your battery is being drained.

The fix is to disconnect the negative battery cable and reconnect it. After you do that put a battery charger or maintainer on it and charge until full. You should be good after that.

 

No such thing as a 2025 V6S, my guess is the OP made a typo and he has a 2015 hence the battery starting to fail.

 

If I were in the UK, I’d consider the Varta, which is the OEM battery. Many folks here have gotten more than 8 years our of them, which I think is great.

 

Mine will be 9 next March and shows no signs of failing so far (hope that doesn't jinx it!). But I have Tayna bookmarked ready, just in case (used them in the past with no issues at all, next day delivery, no hassles).