Solar battery charger/tender option?

[Chippy01]

Due to a few issues arising one after the other, I will be driving my Corolla Cross less and less over the next couple of months.
I had a starting issue last week after not driving for a while, but luckily I had access to a Halfords jump pack which got me started.
I just connected it straight to the Battery and after a couple of seconds pressed the Start button. Car started in Ready mode and I immediately disconnected the jump pack. All good.

However, I am hoping to negate the need of the jump pack, and looking into getting a solar charger/tender to keep the Battery condition good over the next while when the car won't be used much - if at all.
After looking online at what's out there, and reading a couple of threads that touched on the subject here, I am as confused as ever.

To those that have solar chargers, which ones are you using? What power of charger? How efficient? Best connection?

The Corolla Cross I have is the 1.8 engined model, which is virtually the same as the 1.8 Corolla Saloon I used to drive, just a different body shape.
Running a lead out to the car and using a plug-in tender is not really feasible. and I am parked facing near enough to a ESE direction.
Being based in Ireland, unless I can source locally it will have to be imported.

TIA