I do have an old Parallax 30 amp that original came with Parallax 6300 whose fan stopped working.
Perhaps I can fix the fan to see if it can be used.
For now I found three used Mean Well on eBay and going to try one of them out.
MW Mean Well PDF-320-12 DC Output 12V 25A Power Supply MW Mean Well SP-320-13.5 DC Output 13.5V 22A HAM Radio CB Audio Power Supply Genuine MEAN WELL SP-480-12 12V 40A 480 Watt LED Power SupplyI'm leaning towards getting the Mean Well 13.5 22 amp psu which I thin is better quality than less expensive non name psus made in China?
E.g. I found several 12 volt 30 amp psu's, uncertain of their quality that are often used for LED lighting, CCTV, etc.
12V DC 360W 30A 110V-220V Switching Power Supply for LED Strip Light Driver CCTV One of the above psus would be used
without any batteries as I plan on removing the RV batteries. If it doesn't work out then I'll re-install one of of the RV batteries, (with charger) or perhaps find and install a couple of six volt golf cart deep cycle batteries.
Quality Deep Cycle batteries potentially can last from 15 to 20 years if maintained, where RV batteries typically have a shorter lifespan around ~10 years and sometimes less if often depleted under 50 percent charge and then recharged again, I think in at least in part what shortens the lifespan of batteries.
True deep cycle batteries uses heavier plates lasting longer, some I remember reading don't have or as much of a problem being nearly depleted and then recharged again and again. Which tends to build up sulfation. Some converters chargers such as some of the Progressive Dymanics have a desulfation stage where it produces a desulfation charger every so many hours for ~15 mins or so.
There are also desulfators with a wide range price range, that operate under various amps. from milliamps to several and more amps.
Such as
Lead Acid Batteries 12v 24v 36v 48v Battery Regenerator 2A Auto Pulse Desulfatorand many others.
How much do they help to preserve a battery. I think it may depend how a battery is used and regularly charged.
Note: I rarely use RV 12 volt lighting. Normally either 120 Vac or a lithium flashlights that run off of 18650 batteries. I have at least a couple doze lithium batteries that I keep maintained. They're fairly long lasting and plentiful as they can be salvaged from laptop batteries.
some of my 12 volt rv lights have been swapped out for leds, that use less power.
So my current 12 volt needs are minimal , rarely used 12 volt lighting and an absorption frid.
I was also looking at Parallax 30 to 50 amp power supplies, however most I've seen come with a dist. panel that doesn't have enough AC breaker spaces for my needs.
30 amp.parallax power supply for a rec. vehicleI picked up a Progressive Dynamics dist. panel with a 30 Amp AC main and up to 9 AC branch circuits.. I require addtional AC breaker spaces. Most of the dist. panels are limited to 5 ac breakers.
PROGRESSIVE DYNAMICS 30 AMP 120 VAC AC/DC POWER DISTRIBUTION PANEL
