I have an older Sirius radio (Stratus 4) that only needs 5 volts and less than an amp to be powered. I was thinking of trying to hook it up to a solar recharger that I bought on Ebay that looks like a wallet and it unzips and there are two solar panels in it and underneath is a lithium battery hookup (I think).
I just can't find the right adapter that would plug in the back of the cradle (G adapter) and would have a regular size USB at the other end to plug into the solar charger.
I think it would make sense to use the sun since we are out in the sunshine riding. I don't ride at night and this way I would get no interference from the bike's alternator in my ears.
Oh, let it fly..............