adventures in solarpunk
Dec. 21st, 2025 01:13 pmSo I mentioned that I'd like to charge various devices using solar power. Here's how that went.
First, the SAE-to-USB widget didn't work. Either there wasn't enough voltage or current coming out of the 10W solar panel to make it think it was plugged into something – it was, after all, intended for a motorcycle – or it was just plain defective.
I have an inverter, i.e. something that turns DC into AC. What if I tried that, and never mind the inevitable losses? First I needed to plug the inverter into the solar panel. The panel has an SAE-to-alligator-clip adapter, and the inverter has something that you plug into an automotive outlet, like the kind cigarette lighters use.
Pro tip: on an automotive plug, the pointy part is positive. The springy contacts on the sides are negative. After I did that, plugging a tablet or phone into the inverter's AC outlet just barely, intermittently worked. But I'd forgotten about one of the inverter's features: it has old-style USB outlets, which seem to work better.
What would really make things work is stronger light and fewer clouds, which aren't going to happen where I live for a few months. The acid test is, come springtime or so, can I recharge my bicycle headlamp in a few hours? If so, I'm all set for The Thing In The Desert.
First, the SAE-to-USB widget didn't work. Either there wasn't enough voltage or current coming out of the 10W solar panel to make it think it was plugged into something – it was, after all, intended for a motorcycle – or it was just plain defective.
I have an inverter, i.e. something that turns DC into AC. What if I tried that, and never mind the inevitable losses? First I needed to plug the inverter into the solar panel. The panel has an SAE-to-alligator-clip adapter, and the inverter has something that you plug into an automotive outlet, like the kind cigarette lighters use.
Pro tip: on an automotive plug, the pointy part is positive. The springy contacts on the sides are negative. After I did that, plugging a tablet or phone into the inverter's AC outlet just barely, intermittently worked. But I'd forgotten about one of the inverter's features: it has old-style USB outlets, which seem to work better.
What would really make things work is stronger light and fewer clouds, which aren't going to happen where I live for a few months. The acid test is, come springtime or so, can I recharge my bicycle headlamp in a few hours? If so, I'm all set for The Thing In The Desert.