New solar set up

Plucka

Just bought a used caravan and I'm going to scrap my old van and move my solar to my new van. At the moment my solar is setup parallel 12volt. Two by 200 watt panels with a 30amp controller plus another another set up the same using a separate 30amp controller plus one 300 watt panel with a separate 30 amp controller giving me three separate controllers feeding two 160 amp 12 volt lithium batteries. In the new caravan I only have room for one controller and I'll be using either four by by 200 watt panels or four by 300 watt panels on the one controller. My question is what size solar controller should I buy if I use either panels -price concern between the 800 and 1200 controller .

mike95490

1200w @ 13V is 92Amps charging.   I'd suggest the PT-100 controller
https://www.magnum-dimensions.com/pt-100-mppt-charge-controller
or the midnight Classic 150
Both have fans, or for fanless, the schneider
https://solar.schneider-electric.com/product/conext-mppt-60-150/  (60A limit)
or the 100A version  https://solar.schneider-electric.com/product/conext-mppt-charge-controller/
works.
Also at the 60A limit, and possibly the smallest footprint the is Morningstar MPPT 60, fanless too.

These all carry serious price tags, but are unlikely to let you down.
With the panels flat on the rood, you are unlikely to actually harvest 92A, so maybe the 60A is going to be ok.