bad bad bat

Helped Risa with a bunch of electronic and power related things.

She built power adapter cables for her compact no-name Chinese lithium-ion batteries. We tested the stock 12 volt cables. Happily, they are compatible with the Kendrick dew heater as well as the iOption SkyTracker. That makes for very portable solutions. The soldering of the male barrel connector for the custom CLA cable was very fiddly.

I tore down the 17Ah Celestron power tank. We found a common SLA battery inside. After an overnight charge, the display flicked between "BAD" and "BAT." Indeed.