King Arthur, the king of mouse droids

[lynellephi]

So, I got a new small solar panel for laptops from my boss.  I'm considering hooking it up to KA, but I'm having troubles with my research understanding how solar panels work.  I know it has to do with the sun, but all the websites I found on converting RC cars to solar says to hook up panel leads to battery terminals.  Now, I may not be the sharpest pencil when it comes to electronics, but doesn't hooking a solar panel to a battery defeat the purpose?  I thought they were suppose to replace batteries. 

Well, now I've come to the real meat of the matter.  How does one actually convert an RC car (which is basically what a mouse droid is) to solar?  To put it another way, what the heck am I suppose to do with this goofy laptop solar panel?  (and, no, not going to use it on my laptop.  LOL)