I use the EnerSys OMAX - 50A - 1B for my engine bay battery to charge/tend while parked. For my house battery in my NLPP I use my solar setup to keep it topped off. I am able to program my charge controller to charge per Odyssey specs for each phase of charging/tending.
Exactly - I opted for the durability myself. The weight difference between the two is minimal - less than 12 oz. per panel and this is including the longer MC4 pigtails that the Grape comes with. If the pigtails were equal this weight difference would be even less.
Here is a little view of my...
I have had both panels in my hands (Renogy and Grape)
Both panels are the same - but construction is now different. Renogy is a 3mm panel, 6 small (2-3mm grommets) and they have reduced the MC4 "pigtails" to just under 10" - total weight 4lb 12oz. The Grape are now 5mm thick, has 4 larger...
Just a quick update. I have been using this setup for a while now and it has worked great. I did expand and add a second panel for a total of 200w system.
Tepui Tent now has a "Ruggedized" version (of the Siberian and the Kukenam) which comes with an anti condensation mat (available in Mid- January as an accessory/separately) 360g fabric vs 260g, diamond plate base, 3/4" wrapped frame (vs 5/8" unwrapped), etc...