Home batteries, solar generators and backup power explained in plain English. We do the watt math, so you buy the right size once, without an electrician or a $15,000 install.
Size my backup →See the best home batteriesTick what matters during an outage. We add up the watts and suggest a size. Typical values; check the label on your own appliances.
Three steps, no jargon.
Most people overbuy or underbuy. Our sizing guide walks you through the watt math with real appliance numbers and worked examples, so you know exactly how many hours your fridge, router and lights will run.
Read the sizing guide →
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We compare manufacturer specs, prices and owner feedback. We don't claim lab tests, and we tell you when a job needs a pro.