Originally Posted by crunchy_frog
do you mean this?
That is not precisely what I meant, but, after doing lots of searching, I think the closest setup is the following:
(1) Something similar to the link(s) you posted, many of which can supply 120 VAC.
(2) Use (1) as the power source for the Battery Tender.
However, hopefully, glockperfect's suggestion will be enough . . .