When a power bank says it can deliver 1,000w, that means its maximum output is 1000 watts. But that number doesn't tell you for how long the power bank can do it. For that you need Wh, or watt hours.

[TheSignalPath] wanted to repair a broken Instek PSW80-40.5 because it has a lot of output for a programmable power supply — 1,080 watts, to be exact. This isn’t a cheap supply — it looks ...