to fit or not

If you don't need one then you don't need one, I know I could quite easily do without one but wanted one for those times I was parked at a Music Festival for a number of days with no option to drive.

When I was in the uk I spoke to a well known company based in Wellington, Somerset about solar and the told me get a second leisure battery first, it's cheaper and depending on how I use my van it maybe all I need.
It was enough for how I was using the van at the time.

Another thing to consider is that a alternator on the engine has the potential to produce between 60 and 140 amps depending on the alternator, whilst the engine is running.
Using a generator to recharge the leisure batteries, no matter if it is 1 kw or 10 kw is usually controlled by the leisure battery controller which usually has an output of 12 -20 amps as it is designed to trickle charge the batteries on hookup, so using the engine rather than a generator should charge the battery much faster than the generator

Why not fit either one or two small ones that way you can have the just in case as even one of say 40w would give a little assistance to keeping the battery topped up

I might have said this before in which case apologies. I saw quite a number of vans in Spain in the winter that had their solar panel mounted to rear of the movable satellite dish, so during the day they used the dish to point the solar at the sun, in the evening the dish was for the TV.
It did not work with a my status aerial.

Wow nice price you would get a lot of hook ups for that!

If your battery goes flat this weekend, just run your engine for a while (in the afternoon), it charges better than a Generator.

I've never thought of solar, but the Rv I've just bought came with one already fitted, so, I've been playing with it a little and I've come to the conclusion that it's brilliant and gives so much more choice. It's a Sunworks system with a 1540mmx660mm panel and a dual controler which means it charges the engine battery and the leisure batteries and has a Sunworks inverter. Thought I'd test it the other day to see how much tv time I'd get, well, having left one of the tv's (a 32" Samsung) on for 3 hours, whilst I did other things, it was still going strong. I'd taken the Rv out from under it's roof that morning, the batteries had been a bit low, and (after being out for about 5 hours) they were showing 12.8v and the sun was coming and going a bit, it was about 4:00pm so the sun wasn't right over head. It gives such choice as, although, when away in France, we hookup on sites, there are shows etc I've been to where that wasn't possible and the gennie, being American, is way too big and very loud. Dunno' what was paid for the system but I'd say, if you go away a lot, then it'd be well worth getting.

I am fiittimg a second Leasure battery I have one solar panel 100 watts with fused Mpp3 controller . Would a sterling or equivalent battery charger be a good addition to my power source .

As eirebus said, both leisure batteries must be exactly the same, so just adding another to an existing one is not wise.
Regarding your choice of charge controller for the solar panel make sure it's a genuine MPPT controller, expect to pay a decent price, cheap ones are often not the genuine article.

[url=

]SEE HERE[/url] for an example of a quality MPPT unit, it's priced at about €100 CLICK

And, here's the B2B charger I have which will keep your batteries charged, even if only making short runs CLICK

Why not change the controller to one that charges both batteries