Battery state - What does it means ?

[029kid]

Im from Norway, its cold at the moment.. around -6 celcius at night.
When I park my car the MMI shows 100% battery, following day it shows from 30-50%. Im running a Blackvue which is connected to a power magic pro.
Anyway, Ive tried to unplug the Blackvue but the battery still drops from 100% to 30-50% the following day.
Sometimes Im not able to start my auxiliary heating because of low battery, it wont start if its less than 30% I believe.

I trickle charged my battery for 30 hours but it seems like im experiencing the same drop in battery the following day.

I did a battery battery measure in VCDS both before and after trickle charge.

BEFORE:


AFTER (I forgot to hit go on 018, if necessary Ill provide a new picture):


Im not sure how I analyze this, did it get any more juice from trickle charge or should I get a new battery ?

I see my battery capacity shows 14Ah (!) .. the current (OEM) battery has 105Ah - I should get a new battery ?

[S4Phantom]

How old is the battery

[029kid]

May 2011

[S4Phantom]

If you're having trouble I would just replace it. My car is a 2011 and I'm not having problems yet but am thinking of changing my battery out at my next service. In my experience working in a repair shop battery's don't really last much more than 4-5 years

[029kid]

Thanks, so if I understand correct.. (im a total noob on batteries).
The battery should not drain as much as it does overnight, even though its cold ?
Ive never experienced any problems starting the car, just auxilary heating and by observing the battery level on my MMI.

[S4Phantom]

Yeah I don't think it should be going THAT low overnight even with the cold. Some one else may be able to chime in but 30% seems extremely low

[Gunnark100]

Yeah I don't think it should be going THAT low overnight even with the cold. Some one else may be able to chime in but 30% seems extremely low

Just replace your battery, you have already new in garage! Car will start even with 10% specialy petrol ones. If battery will not keep capacity 100-30, something is draining battery or battery dead soon, its 4,5 years, Norway and with aux heater which is killer for battery.