Notes on portable power, solar, and battery backup. Specs-based unless a page says it was hands-on.
What I write about
Recent posts
Recent reviews and notes — newest first.
How I review
Real scenarios (camping, outages, solar recharge). Head-to-head when specs look identical. I always call out downsides — affiliate links never change the conclusion. I do not claim to have bench-tested every product on this site. Hands-on pages say so.
Start here
Deep-dive guides — sizing, wiring, batteries, and solar basics.
Practical how-tos
Size a backup for a real load, or compare hydro options without the vapor.
- How-to guides hub
- How to size a CPAP backup battery
- How to size a battery for a 12V fridge
- Transfer switch safety for a portable generator (UL 1008)
- How to size a battery for a nebulizer compressor
- How to size a battery backup for reptile heat mats and heat lamps
- WaterLily turbine alternatives
- Solar DC well pump path: suitcase Voc and 12–30 V sizing
Some links earn a small commission if you buy — it helps keep the site running. I only link gear I’d seriously consider.