Is my leisure battery on its way out , victron mppt

[da1es]

Hi after reading lots on here i had the 150w panel and victron smart solar mppt 75/15 installed
After a weekend away and thinking the battery was fully charged, it appears to be draining really quick, it seems to be constantly in bulk and charges to a decent level but drops to a really low level as can be seen in the attached pics, is this normal, i havent changed any setting since installation.
Thanks in advance for any advice

 

[Pete C]

Can you tell us a bit more about your battery (capacity, age etc), and also what is connected to it ?

Pete

 

[da1es]

Hi, it will be 3 year old now, not sure on size or type,as it doesnt give a capacity on it, in the past before solar it would last a few days before giving up, it only runs the fridge , lights and tv, although i left a coolbox connected which i think drained it initially

 

[Dilbert]

Those minimum voltages don't look good. That level of discharge will have damaged a good battery.
Cool Boxes take a relatively high continuous current. That may have discharged the battery into low voltage failure territory.