Next-generation battery technology is much like fusion power: a major breakthrough is always a year or two away. We keep being promised things like laptop batteries that can last for a month, and true wireless charging throughout a room. None of it ever materializes.
However, one modest but still worthwhile breakthrough in battery tech is real and available today: solid-state powerbanks – including a new MagSafe model from Zens …
My colleague Fernando Silva tested one solid-state MagSafe battery last month and I’ve been testing another. Technically, the Zens Semi-Solid-State Powerbank is, as the name suggests, a hybrid battery tech.
Zens made that choice because solid-state batteries have the greatest energy density, but don’t offer the best performance and lifespan. Combining the two battery techs aims to deliver the best of both worlds.
The 5000mAh version measures just 8mm thick and is otherwise fairly typical in size for a MagSafe battery at 10.2x7cm. There’s also a 10,000mAh variant with the same dimensions but a thickness of 1.4cm.
