When the signal doesn't reach the second floor or rooms at the far end of a detached house, it's hard to tell whether you should replace your old router, add a mesh system, or review your internet ...
The conclusion for a disaster-prevention portable power station is: "a 1000Wh class if you want to keep a refrigerator running for a full day, and a 2000Wh class if you want to run an air conditioner.
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