Belkin has entered the portable charging market with its first power banks built around semi-solid-state battery technology, a shift the company says will let the accessories last up to three times longer before replacement is needed. The new devices, announced at IFA 2026, introduce what Belkin calls BoostSolid Cell technology, which adds a gel-like layer to the liquid electrolyte used in standard lithium-ion batteries. The company claims this design also lowers the risk of overheating that can lead to swelling or fires and keeps power delivery steady across a wider range of temperatures. The premium price over comparable power banks is meant to be offset by the longer functional lifespan, according to Belkin.
The smaller option is the UltraCharge Pro Slim Magnetic Power Bank 5K Qi2 15W with BoostSolid Cell, priced at $69.99. Belkin says it is 40 percent slimmer than other 5,000mAh power banks and is built to magnetically attach to the back of compatible mobile devices, delivering up to 15W of wireless power. A USB-C port can charge other gear at up to 22.5W, though using both outputs at once reduces the wireless output to 5W and the wired output to 12W.
For users needing more capacity, Belkin offers the UltraCharge Pro Power Bank 10K 60W with BoostSolid Cell and Display at $89.99. This model has a 10,000mAh battery, twice the capacity of the smaller unit, and, thanks to the higher energy density of the semi-solid-state cells, is also slimmer than competing power banks with similar capacity. Its maximum output reaches 60W over USB-C when charging a single device, but that figure drops when three devices are connected through two USB-C ports and one USB-A port. A built-in display shows the charge level, power output, and internal temperature.
Belkin joins several other companies, including BMX, Kuxiu, and Zens, in adopting semi-solid-state battery technology for consumer charging products. The launch positions Belkin within a broader industry move toward battery chemistries that promise longer life and improved safety. For US consumers, the key selling point is durability: the higher upfront cost is framed as a trade-off for a power bank that should outlast conventional lithium-ion models. There is no stated release date beyond the IFA 2026 announcement, and Belkin has not detailed specific availability for the American market in the announcement.
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