You might want to check out this video: https://youtu.be/fOH_p3c5LZs
An RV couple discussing their decision on a composting toilet.
When we were sail boating in the 90's, we installed an Electrosan head, which appears to work on the same principle as the Biolet, namely the liquids and solids were electrically zapped. This cooked and supposedly rendered the waste into an inert ash which we could discharge (legally) overboard.
The Electrosan used 12V
for cooking the stuff and it required a heavier gauge of wire - 2 gauge - and a direct, fused connection to our battery bank.
We are installing a Separette composting toilet in our 1972 Overlander, primarily so we can use the black water tank as a gray water tank. The differences between the Biolet and the Separette (or the toilet installed by Norm & Kim in the video) are 1) the Separette needs only a 12V, low-draw computer fan for airflow and 2) it appears this model of Biolet combines both liquid & solids whereas the Sparette separates. Both units conserve on water usage.
There are non-electric 120V models of the Biolet - maybe you can get a conversion kit. The rated power usage, at 245 watts, would require about 21 amps at 12 V.
Needless to say, the Biolet that landed on your lawn is a smokin' deal!