In May 2026, a Shenzhen chip designer called Injoinic quietly shipped something the power-bank world cared about: a single-cell Qi2.2 power-bank solution (SW6258 paired with SW5108) that pushes 25W magnetic wireless charging to your phone while also delivering 30W over a cable, all on a board thin enough to slip inside a card holder. The point is simple — building a power bank that does both magnetic charging and fast wired output used to mean stacking several chips and wiring two cells in series, which made the thing thick. Now one controller plus one power stage does the job.
Why a single cell matters so much
The thickness of a wireless power bank is mostly decided by how the cells are arranged. To reach 20W-plus a few years back, makers used two cells in series (2S), because a single lithium cell tops out near 4.2V — not enough to drive a wireless coil. Series wiring means extra protection boards and balancing circuits, which add bulk and cost. Once silicon-carbon anodes matured, a single cell could hold 5000 to 10000mAh without growing, so makers could go back to one cell — provided they had a wireless charging SoC that could boost and modulate the voltage. That is exactly what Injoinic's pair does: boost, rectify, FOD (foreign-object detection) and temperature sampling all fold into one or two chips, so the power-bank brand no longer has to cobble the design together.
For everyday users the change is tangible: thinner, lighter banks that snap to the back of a phone without feeling like a brick. In Elecdov's April 2026 roundup, several 5000mAh magnetic banks already measured around 8mm thick and 110g, light enough to live in a pocket.
Behind 500 certifications, a standard finally stuck
The bigger story is the WPC's Qi2.2 certification crossing 500 products worldwide around May 2026. Trace the curve: Qi2 (15W MPP, the magnetic-alignment spec) launched in early 2024; about 100 certified products by late 2024, still Apple-led; late 2025 Qi2.2 raised the ceiling to 25W and certifications hit 300; by May 2026 they passed 500. Doubling in roughly half a year tells you the Android camp (Samsung, Google) joined in, and magnetic wireless charging is no longer an Apple-only perk.
What 500 certifications means for a buyer: pick any bank carrying the Qi2.2 mark and you will mostly avoid the 'snaps on but won't charge, or charges slower than a cable' trap. MPP mandates magnetic alignment, so the coils line up and efficiency holds; add China's GB 47372-2026 portable-power-bank safety standard, enforced from April 2026 with stronger overcharge, short-circuit and flame-retardant-housing rules, and a certified product is far more trustworthy than the lot that showed up in earlier recall waves.
One line to take away: in 2026 a magnetic wireless power bank went from gadget-for-enthusiasts to a daily accessory you can buy on the strength of one chip and one certification. When shopping, look for the Qi2.2 mark and GB 47372-2026; that beats chasing a padded wattage number.
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