Originally Posted by
350htrr
Not quite the same as an extra battery, that just extends your range and you still need a AC outlet to keep going the next day... With a solar panel like this, you may NEVER need to plug in anywhere, you can re-charge while stopped to rest all day so the distance you can go is unlimited, basically as long as there is sunshine you will have all the power you need.
OK so nice for reliably sunny areas but eastern US & much of Europe can be cloudy or rainy even in mid-summer so solar charging might take some time. Perhaps one could mount the solar panels atop a bike trailer & charge while riding.