Exactly. And you'll have that high quality panel for the rest of your life. Locally, I'm selling 280 watt REC (brand) panels for $260.00 for one, $500.00 for two! That is so cheap, MUCH cheaper then I could BUY them just a few short years ago, it's a no brainer for me. Unless you really need the flexible ones, get a "real" solar panel. Going just a bit further, get a few of them, grid tie your home, and you're done! Now you can, in effect, solar charge your bike while fully realizing a long term payback on your investment for DECADES. Plus a tax credit if applicable! To me, there is nothing sadder then a solar panel sitting inside, not working, and being wired to a battery system with the charge controller is NOT working. In the 28 years I was off grid, I shudder to think of all the power I wasted, when
the charge controllers for my PV and wind systems were floating. Now, for the last 9 years, all my power is saved in the grid and/or used, none wasted. Rant over