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BMX Launches 100W SolidSafe 20K With Semi-Solid Batteries

The slim 20,000mAh pack sells in the US as a pricier travel option that cuts fire risk without eliminating it.

Overview

  • The SolidSafe 20K is on sale in the United States for $109.99 and uses BMX’s semi-solid-state cells to offer laptop-grade charging in a travel-friendly package.
  • Its main USB‑C port can deliver up to 100W while a second USB‑C is rated at 65W and a USB‑A at 22.5W, with the primary falling to about 65W when all three ports are used.
  • The pack measures 147.4 x 90.3 x 18mm, weighs roughly 375g, and its 74Wh capacity sits below the common 100Wh airline carry‑on limit so it can travel in cabin baggage without special approval.
  • Reviewers note the 20K is materially more expensive than some conventional lithium‑ion rivals with similar specs, and BMX does not include a wall charger in the box.
  • BMX says the semi-solid cells replace most liquid electrolyte with a solid or gel, which reduces the amount of flammable liquid inside the pack and slows cell degradation, but reviewers and the company stress this lowers risk rather than eliminating the possibility of thermal runaway; BMX has announced a 25% Black Friday discount from November 19–30 and wider regional availability is pending.