Tips
South is the best balcony solar orientation, you read that everywhere. For your power bill it often isn't true. Optimise your balcony solar orientation for maximum yield alone, and on a system capped at 800 W you hand money back to the midday sun.
Jonas Keller
Tips
The moment is always the same. Ski lift, freezing platform, second hour of a dog walk below zero: your phone shows 20 percent, you plug in the power bank, and instead of the two full charges it normally manages, you get half of one. Or nothing at all. The obvious conclusion is that the thing has...
David Reinhardt
Tips
The power bank has been in the glovebox since May. It bothers nobody there, it is available in an emergency, and it is, after all, just a piece of electronics in a closed compartment. That reasoning falls apart in high summer, and not because the battery bursts into flames on a Tuesday afternoon,...
Jonas Keller
Tips
A power bank rarely dies on a particular day. It gets quietly weaker over months, and at some point it no longer carries your phone through to the evening — without a single warning light having come on beforehand. That is exactly why the lifespan question is so unsatisfying to answer: there is...
David Reinhardt
Tips
Since the end of 2024, virtually every new phone sold in the EU has a USB-C socket, so most buyers assume the same rule covers the power bank in their drawer. Then a freshly ordered model arrives that still charges over Micro-USB — perfectly legal, and a neat demonstration of how narrowly the EU...
Sophie Ahrend
Tips
An old power bank sits in a drawer for months, and eventually the question comes up: battery box at the supermarket, recycling yard, or electronics bin? Most guides get one half of that right and the other half wrong.
David Reinhardt
Tips
Almost every MagSafe power bank listing prints the number 25 watts somewhere. It is a real number. It just belongs to the puck on the wall socket, not to the battery, and even there plenty of iPhones never reach it.
Sophie Ahrend
Tips
Most power banks already carry the answer on the casing. Turn the thing over and look for a line reading `74Wh` or `Rated Energy`. Manufacturers print it because aviation rules are written in watt-hours rather than milliamp-hours, not out of generosity. If you're trying to convert mAh to Wh and...
David Reinhardt
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