BMX's SolidSafe: A Closer Look at Semi-Solid State Power Banks
Thomas Ricker, a veteran tech journalist and Verge co-founder, reports on BMX’s entry into the portable power market. The company has launched a line of SolidSafe power banks after a Kickstarter debut, aiming to offer longer life and safer performance than traditional lithium-ion packs that have faced recalls and regulatory scrutiny in 2025.
BMX describes its devices as solid-state, but their chemistry sits in the realm of solid–liquid electrolytes. Still, supporters argue these chemistries can deliver meaningful durability advantages and are compatible with existing manufacturing methods to help keep costs in check. The math is straightforward: roughly double the lifespan for about twice the up-front price, which could translate into lower long-term risk of burns or property damage compared with older batteries.
Durability claims are a central selling point. BMX highlights performance tests—such as resistance to drilling, bending, and cutting—to illustrate resilience versus traditional lithium-ion cells. In contrast, conventional Li-ion batteries using all-liquid electrolytes typically show more vulnerability under similar stress.
SolidSafe specifications and pricing
- Capacities: 5,000 mAh and 10,000 mAh
- Price starting point: around $79
- Special model: a 10,000 mAh version with a microSD slot (up to 512 GB) priced at about $129
- Charging: 30 W USB-C in/out; built-in USB-C cable in the lanyard
- Wireless charging: uses older 15 W Qi2 MagSafe-compatible tech, not the newer 25 W Qi2.2
Availability and future availability
- At the moment, BMX shows the SolidSafe lineup as sold out on its site. Expect to see the products listed on Amazon in the United States in January.
Background and leadership
- BMX stands for Better Mobile Xperience and is led by Daniel Chin, the founder associated with Sanho—the company behind Hyper-branded batteries once popular with Apple users. Sanho was acquired by Targus in 2021, paving the way for Chin’s next venture.
- The semi-solid state claim is shared by BMX and competitors like Kuxiu, though both brands rely on solid-liquid electrolytes rather than true solid-state chemistry.
Bottom line
- BMX’s SolidSafe line positions itself as a safer, longer-lasting alternative to standard Li-ion power banks, with a price and feature set designed for users who want more endurance and robust performance—even as the chemistry remains a step away from the strict “solid-state” label. Whether these advantages hold up in real-world use and at scale remains to be seen as the products become widely available.
By Thomas Ricker
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