How often do I need to charge my lesuire battery?

[Reedy_T6.1]

Hi,
I've had my camper nearly 18months and I'm still not sure I'm doing things right.

I've got a solar on the roof of my pop top but not sure how much power that generates in the winter (is there a way of finding out?)
So I also plug the van into my house outdoor 240v socket once a month or so for 24hrs, I presume by doing this I'm effectively charging my leasuire battery?
Is that correct? If so Is once a month often enough?
I've added some photos of my supply unit and other bits.

Do I need to be pressing any buttons or turning anything on when I'm charging?

 

[CAB]

The solar should keep it topped up, but once a month on EHU doesn't hurt, and compensates for any really 'orrible weather.

EDIT:
Get a BM2 bluetooth monitor and then you will always know what it is sat at:

Amazon.co.uk

Battery Monitoring -- How I Done It --

Battery Monitoring -- How I Done It -- Part #1 Battery monitoring is a very important part of your 12v system . . . . whether its just the vans starter battery or your leisure setup keeping an eye on the power in your battery bank will keep you from breaking down and make sure your weekends...

www.t6forum.com

 

[Reedy_T6.1]

The solar should keep it topped up, but once a month on EHU doesn't hurt, and compensates for any really 'orrible weather.

EDIT:
Get a BM2 bluetooth monitor and then you will always know what it is sat at:

Amazon.co.uk

Battery Monitoring -- How I Done It --

Battery Monitoring -- How I Done It -- Part #1 Battery monitoring is a very important part of your 12v system . . . . whether its just the vans starter battery or your leisure setup keeping an eye on the power in your battery bank will keep you from breaking down and make sure your weekends...

www.t6forum.com

Thanks for the reply.
I've got a Bluetooth Vicron connect if that's something similar? (Only new that as i found a manual with all my other bits for the van)
Why I'm doubtful is even when it's sunny i never get the solar light lit up on my solar charge controller, its only the battery light that's ever illuminated.