The tk45 has been a wonderful flashlight for me it’s all the power you could need in a compact flashlight. The other day I discovered an aspect that made it even more valuable. The biggest pain for me was charging the batteries- pulling out the holder then each of the eight AA’s. I would also [...]

Ideally electric cars would be solar powered. The Nissan Leaf has a solar panel built into the spoiler, but the specs aren’t mentioned. Why? Because sometimes, like in this case it’s better marketing to not mention the specs at all. Of all the costs of an electric car the most obvious is energy costs, and [...]

The watts up meter is intended for use with rc equipment, but with tolerance of 60 volts the watts up meter can work great for small solar systems as well. The “watts up” is essentially a dc version of the popular kill a watt meter.