How We Research and Choose Products
Every guide follows the same process, so you know exactly where our recommendations come from.
1. Start with the real question
Every guide answers one specific question, like "What's the best power station for a sump pump?". Sump pumps need high surge power; a CPAP needs quiet, efficient DC output. The question decides what matters.
2. Do the runtime math
We estimate how much energy (watt-hours) and output (watts) the job needs, using typical device draws and a 15% allowance for inverter losses. That's the same math as our Runtime Calculator.
3. Build a shortlist of proven products
We start with the models that keep showing up as best sellers, in major reviews and in owner communities, then narrow them down to the ones that actually fit the job.
4. Compare specs side by side
Capacity, continuous and surge output, battery chemistry (LiFePO4 vs. NMC), recharge speed, solar input, outlets, weight, noise and warranty. Specs come from manufacturer documentation.
5. Read owner reviews
We read owner reviews on retailer and brand sites, looking for patterns, especially from buyers in the same situation as the reader (for example, people running CPAP machines, or campers in freezing weather). We summarize what keeps coming up, good and bad.
6. Say who it's NOT for
Every pick includes a clear "skip it if" note. A recommendation that admits its limits is one you can trust.
7. Keep it fresh
Power stations get updated and discontinued often. We re-check our picks, prices and availability every few months and update the date at the top of each guide.
Hands-on testing
When we've used a product ourselves, the guide says so. When a guide is based on research and owner reviews rather than our own testing, we say that too.
Scores
Some guides show a score out of 10. It reflects how well a product fits that guide's specific job, based on its specs, value and owner feedback. It is not a lab measurement.