Zishine Energy (Shenzhen) Co., Ltd. has announced the completion of research and development on its Qi2 15W magnetic wireless charging module, a core internal component designed to underpin the company's next wave of magnetic power banks, desktop chargers and automotive mounting chargers. The project was led by the Shenzhen R&D center across multiple development cycles and targets the two pain points that have historically limited the wireless charging experience: imprecise coil alignment and heat-induced power throttling. As the Qi2 magnetic ecosystem continues to expand beyond a single smartphone platform and into Android devices, Zishine aims to hand its OEM and ODM partners a mature, already-tuned module that can drop straight into new product shells without months of low-level tuning.
The Qi2 standard formalizes the magnetic alignment approach that the most popular magnetic ecosystem first popularized. Instead of asking a user to carefully line up a phone on a loose charging pad, Qi2 defines a consistent magnet array that guides the receiver coil and transmitter coil into an optimal relative position, then negotiates up to 15W of power through a much tighter alignment margin. For product makers, this translates into fewer "not charging" moments, higher realized efficiency and a repeatable experience from the first placement to the last. Zishine's engineering team spent the first phase of the project dissecting the Qi2 specification, mapping out coil geometry, ferromagnetic shielding requirements and control-loop behavior before committing to a fixed hardware layout, so that the final design would interoperate reliably rather than work only with a single reference phone.
A central engineering goal was converting energy into the battery rather than into heat. The team optimized the transmitter coil's winding pattern and the resonant compensation network to raise end-to-end efficiency under realistic loading, and selected a control integrated circuit with dynamic frequency adjustment that adapts as a device approaches full charge. Early bench tests show that under typical 15W operation the module holds its surface temperature well below the threshold at which chargers usually step the power down, a common complaint with earlier third-party wireless pads that delivered 15W on paper but throttled to half that after ten minutes. The design also integrates foreign-object detection, so charging pauses safely when keys, coins or loose magnetic accessories sit between the two coils, and resumes automatically once the obstruction is removed.
The magnetic array is where much of the iterative work actually happened. Magnets that are too strong can interfere with a phone's internal compass or add unnecessary thickness and weight; magnets that are too weak let the phone slip to an angle and break alignment. Zishine's structure engineers tuned the magnet count, arrangement and shielding to hold common smartphone models firmly while keeping the assembled module thin enough to fit inside a slim power bank shell. They also tested the array at different phone case thicknesses, because a thick case degrades both the magnetic hold and the coupling between coils, and adjusted the shielding so that performance remains acceptable through the thin protective cases most users actually own.
NFC-assisted alignment support was added as a second layer, letting a Qi2-compatible phone confirm identity and positioning quickly and enter the 15W fast-charging handshake without the user repeatedly repositioning the device. This matters because fast wireless charging only engages once the charger and device agree on both alignment and authentication; without that handshake, a phone defaults to a slow baseline rate that frustrates users. By baking the NFC alignment and handshake logic into the module reference design, Zishine removes a whole class of firmware and compatibility problems that smaller accessory brands would otherwise have to debug themselves.
The module is built as a platform component rather than a one-off reference. Zishine plans to deploy it across magnetic power banks in the 5,000mAh to 10,000mAh range, a foldable desktop charger, and a vent-free car mount charger. Because the module already integrates the magnet array, coil, driver and thermal design into a single validated block, downstream product teams can skip much of the low-level radio-frequency tuning and move directly to industrial design, shell material selection and packaging. For OEM partners, that means shorter sampling cycles and a more predictable bill of materials, since the highest-risk wireless power engineering has already been worked through and documented in the reference design.
Before signing off on the design, the module went through a structured validation campaign. Engineers measured alignment success rates across a range of phone models and case thicknesses, recorded charging efficiency at different battery states, and ran heat cycling and mechanical drop tests to confirm the magnet array survives everyday handling. Reliability staff also conducted long charge-cycle sequences to watch for efficiency drift over time, and verified that foreign-object detection triggers reliably for common metallic objects. An independent testing partner will now complete formal Qi2 certification, so that finished products can carry the Qi2 mark and ship confidently to markets that recognize it, rather than relying on uncertified compatibility claims.
Bringing the module in-house also strengthens Zishine's cost and supply posture. Rather than sourcing a finished wireless charging board from a third-party module vendor and accepting their margin and lead times, the company controls the magnet sourcing, coil winding and driver selection directly. This gives procurement more leverage when material prices move, and gives product teams the freedom to tweak the magnetic geometry for a specific partner's shell without redesigning the whole board. As magnetic charging becomes a standard feature rather than a premium extra, that level of internal control is becoming a competitive baseline rather than a differentiator.
The completion of this module extends the magnetic charging range Zishine already serves through its MagSafe-compatible power bank series. The company is not treating wireless charging as a feature bolted on after a power bank is designed; it is building the power-delivery layer first, then wrapping capacity, ergonomics and branding around it. This is the same philosophy behind the company's semi-solid battery work and its automated assembly lines: own the difficult engineering, simplify the customer's decision, and keep quality and cost predictable at scale.
For brands planning magnetic accessory lines for the coming year, Zishine is now accepting reference designs and customization inquiries. Partners can request evaluation units and joint development discussions through the company's website, or contact the team directly at hushijun@sunhetech.com to align on capacity tiers, shell finishes, output protocols and certification roadmaps for their target markets. With the Qi2 module ready, Zishine expects its first partner products built on the platform to move from sample to pilot production within the next quarter.
