Extension cord

If you aren't using the a/c or oven or anything else that runs a lot of amps you can probably get away with what you have.  I would rather spend the 5 - 10 minutes to hook up the pod to your TV, pick up the 4 stabilizers, and move your extension in  and move it CLOSER to the electrical supply so that you just use the 25' cord.  AND then you can unhook, and re-level everything again, hey it's good practice!  In my 5+ years of owning our 177 I have made the mistake of getting everything ready and then hooking up my 25' cord LAST and then find out I am anywhere from 2 to 5 feet short, ugh.  After doing that a couple times I am now trained to do that FIRST, even before unhooking the trailer from the hitch. 

Ok, so using a 15 amp cord will reduce your usable wattage that you could use with the heavier 30 amp cord that came with your pod.  The 15 amp cord can handle up to (15a X 120v) 1800 watts.  If you are only using to to keep things charged w/o using any heavy wattage users you will be fine.  To be safe just add up all the things running while you are plugged in.  As long as you are under the 1800 watts, no worries.

Don't have the specs. in front of me but I know of other podders who have used a 15 amp cord for the very purpose you state.  We do the same thing as far as pre-cooling the fridge the day before we leave.  As long as you are only using the fridge (no a/c, furnace, htw, oven, entertainment center) you will be fine.

Thanks for all of the quick replies from all of the helpful podders!

The fridge uses less than 150W on 120V, or about 1.2A. Even the converter, charging a really depleted battery should be less than 400W, or 3.3A. Lights, if LED, the pump and the fan really don't count. The furnace is 36W which equates to about 0.3A at the 120V side of the converter. So, without the electric WH, A/C, and Micro your 15A cord is very adequate, Even the electric WH is only 1440W, or 12A at 120V. So, bottom line, your 15A cord will run pretty much anything except the Micro and A/C. Careful management will even permit Micro and/or A/C, but only by themselves. Just in general I would suggest a 15-25 ft heavy duty #12AWG cord made for outdoor use. Then you're good to go whatever you want to do, even if you miss the magic parking spot.

EDIT: All that assumes there are no significant additional loads on the house circuit. The extension cord will still be fine, but additional loads will subtract from available power at the outlet. Things like motors, fridges, freezers in the house will limit how much is available for the POD.