I was bored and was looking for things to experiment with... I wanted to put a 10w panel on my bike. For several reasons: 1. To use as a trickle charger, because my commute is short (really short), and I don't feel the bike gets adequate recharging after the starting process. 2. Although the bike has good power output and a decent sized battery, I wouldn't want to run it to power a communications or entertainment device while camping or whatever. It's hot outside... So I wanted it disconnectable 3. I've only seen a few bikes with top case panels before, and I wanted to experiment with it. The panel I ordered is 13" x ~12", with a 10 watt output ~12 volts nominal. Since watts = volts x amps, it should output ~.8 amps, which reviews say it does nicely. I believe the GSA has a ~12Ah battery, which I believe means it should deliver about 12 amps at 12 volts for 1 hour, although chemical and physical limitations make this impossible I think. You divide 12 Ah by .8 amps, which equals ~15 hours. So I think if it were theoretically possible to completely drain and recharge this battery, which it isn't, it would take about 2 days of sun light to do so. My math could be wrong... However, I think for real world use and minor drain on a battery that spends most of it's time 95% full, 10 watts of solar power is plenty.... My ultrabook drains about 30w of power at 12v, so it would theoretically take ~3 hours of panel charge for 1 hour of usage. But I think for the iphone 1 hour of sun should get you at least as much charge. Of course a lot of this stuff is math and not practical other than to get an idea of things. The real world will vary. Anyways... stuff: 10W Ramsond Monocrystalline PV Solar module, it's ~13" x 12" and I bought it because of it's size compared to the top of my pelican 1500 top case. It has an aluminum frame and an impact resistant glass. Pelican 1500. Ramsond 8 Amp Solar Charge Controller Regulator. A few battery tender connections. I also have a small 4.6Ah 12v lithium battery pack laying around, which I threw in there. Here was the plan before I started... Here's the panel mounted to the box... Rubber grommets for a little shock resistance. Charge Controller. Wires and battery that need to be tidied. Output cable. Off bike. On bike. Charging. Connection to bike. Case opened. Obviously I'm missing something: multimeter readings! My Craftsman multimeter is dead, even after a battery change, I need to take another look at it and see if I can resurrect it. I don't trust my wiring of black and black wires without a multimeter, so the power unit is remaining disconnected from the bike until I make sure. Might have to buy a new meter... Manufacturer specified this panel to withstand ~44kg of weight. I don't plan on loading it that heavy, but I should still be able to strap things onto the panel when I need to, such as my water bag. This panel was also rated for 145 mph winds, and a few other things that are probably bullshit. But it does have a 25 year warranty on power output, but something equally implausible. Whatever, it was only 40$... Although all my holes were tight for the bolts and wires, I still need to dab a bit of sealant on them, I also want to get a little velcrow wire keeper to hold the power box's cable closer to the bike. I also need to clean up the interior wiring with some zip ties.