https://keeplights.com/guides Short guides about home backup power, in plain words. en-us https://keeplights.com/guides/what-is-a-watt-hour https://keeplights.com/guides/what-is-a-watt-hour Mon, 05 Oct 2026 17:56:57 GMT A watt-hour is one watt used for one hour, so a box that holds 1,000 watt-hours runs a 100-watt TV for about 8.5 hours by our math. https://keeplights.com/guides/watts-vs-watt-hours https://keeplights.com/guides/watts-vs-watt-hours Mon, 05 Oct 2026 17:56:57 GMT Watts tell you if a box can run a thing, and watt-hours tell you for how long: a 600-watt box cannot run a 1,100-watt microwave. https://keeplights.com/guides/how-long-will-a-power-station-run-a-refrigerator https://keeplights.com/guides/how-long-will-a-power-station-run-a-refrigerator Mon, 05 Oct 2026 17:56:57 GMT A 1,000 watt-hour box runs a normal fridge for about 7 hours. https://keeplights.com/guides/cpap-backup-power-for-outages https://keeplights.com/guides/cpap-backup-power-for-outages Mon, 05 Oct 2026 17:56:57 GMT By our math, a 1,000 watt-hour box runs a 40-watt CPAP for about 21 hours, and a heated humidifier can shorten that. https://keeplights.com/guides/keep-wifi-on-during-a-power-outage https://keeplights.com/guides/keep-wifi-on-during-a-power-outage Mon, 05 Oct 2026 17:56:57 GMT A small 300 watt-hour box keeps a 15-watt Wi-Fi router on for about 17 hours, as long as your internet provider's network still has power. https://keeplights.com/guides/whole-home-backup https://keeplights.com/guides/whole-home-backup Mon, 05 Oct 2026 17:56:57 GMT No portable box runs a whole home: an average U.S. home uses about 30,000 watt-hours a day, and a large portable box holds about 2,000. https://keeplights.com/guides/is-plug-in-solar-safe https://keeplights.com/guides/is-plug-in-solar-safe Mon, 05 Oct 2026 17:56:57 GMT Plug-in solar has real safety questions, and as of October 4, 2026 only 6 states have a law in effect that covers it.