Your link seems to be broken, but Laundry
Alternatives sell two sizes of spin dryer - I don't know which one you currently have. I have never seen a 12V one, but both of them can be run off a small inverter
with no problem.
Your other alternative is to pick up a compact washer/spin dryer like this: http://www.amazon.co.uk/Good-Ideas-P.../dp/B004ZDLN2M
You don't say where you are, but these are available everywhere in the Caribbean
for ~$100USD. They are very popular on boats if you have a place to store it.
BTW, for those not familiar with these portable spin driers, they are the bomb. They don't take up any more space than a manual wringer, cost less than manual wringers, weigh less than manual wringers, and beats the snot out of twisting your stuff around a shroud
. They draw ~6-7 amp DC when used with an inverter
, but only run for 1-2 minutes at a time, so the total power used is very small.