We take the time to explain: technologies, myths and the big questions of portable energy.
Some topics deserve a closer look. In our insights, we take the time to dig in: the real differences between Li-ion and LiFePO4, how charge cycles work, the memory-effect myth, the future of portable solar and sodium-ion. These deeper features are not there to sell you something right now, but to give you the keys to understand what is really behind your devices. This is also where, article after article, we build the expertise that makes all the difference when it is time to choose.
They are often confused, yet they do not share the same lifespan, weight or safety. Conventional lithium-ion or lithium iron phosphate (LiFePO4): this feature breaks down, jargon-free, what really sets them apart, and helps you know which one powers (or should power) your devices.
Julien De Jurquet•
July 10, 2026
Recharging your devices, or even a whole power station, from the sun: the dream of self-sufficiency is appealing. But between the power printed on a panel and what it actually produces, the gap can be surprising. As a solar engineer, I will tell you straight what solar charging allows, and what you should not expect from it.
Julien De Jurquet•
July 6, 2026
20,000 mAh on the label, but barely two smartphone charges: normal, or a scam? The capacity advertised on a power bank and the energy you actually get back are two different things. This feature explains why, how to read the real figures, and above all how to spot inflated capacities.
Yoni Marchal-Laporte•
July 4, 2026