Looking at replacing the battery on my 2007 tdv8 sport as it seems to be losing charge when the car is not used for a few days.
When the car is started there are warning messages which read Engine System Fault which flashes on and off very quickly and also Parking Brake Fault Auto release not available but goes off after a second or two.
When I put my trickle charger on over night non of this happens.
Also I have noticed that the drivers seat is moving out of its pre set memory position.
I assume that all this is the voltage drop in the battery even though it's only 15 months old.??
Can anyone advise as to what is a decent replacement battery.
Thanks. Phil.

Maybe a ctek 5 charger would be better if you have a handy power supply by car

It is a ctek 5 charger that I use.

I think mine is a varta agm battery, was about £175 and has solved a whole bunch of random faults I was getting.

Be worth checking the alternator. Do you do mostly short runs? With regular hour-plus runs, the battery should be kept in decent charge unless the alternator is tired. On short runs it might just be struggling to get meaningful charge even with a good alternator. Short runs and tired alternator would be a recipe for trouble.

As for new batteries, I went with the Yuasa Silver from Halfords. 5 year guarantee. Did need a little fettling in the battery box to fit it. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Already had alternator checked out and it's ok.
Which of these batteries would be the better one.

I got a bosch battery from costco for circa £130