Unfortunately, the Flowjet 2.9 is not portable. I suppose, however, it could be rewired. Anyway, we made a decision to purchase the Sureflo portable water pump, model #2088-594-144.
The pump itself, purchased from PumpAgents.com, is pricey at $158 and the least expensive I could find. The two water portals are 1/2" so brass 1/2" to 3/4" adapters had to be purchased. Two hoses are required, 4' and 10' (a bit of overkill). The 4' hose goes from the pump into the portable water storage container and the 10' hose goes from the pump into the RV water tank opening. The latter is about 5' off the ground. Finally, I bought so-called end caps to protect the threads on the brass adapters and hose threads. Total cost - $185.
We tested the pump in the kitchen of our house with a full 3 gallon water storage container. The long hose went into the kitchen sink. We plugged the pump into a wall socket (no switch) and the pump moved the 3 gallons into the sink in about 50 seconds - wonderful. No leaks, no surprises except it worked better than I expected.
No more hernias for me!
Well, I still have to transport the water from a spigot or handpump, but no more lifting the water container up 5ft. Long live "dry" camping. Besides, I love gadgets.