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Teardown: Jiudian 67W 15000mAh 3-in-1 Laptop Power Bank

A three-series 21700 pack, a GaN quasi-resonant charger stage and a 67W USB-C output share one retractable-cable enclosure rated at 54.75Wh.

Sep 15, 2026 · Dangel Technology editorial

Jiudian's NY-CDC01 combines an AC charger, a power bank and a retractable USB-C cable in one 405.9g enclosure aimed at commuters, business travellers and outdoor shooters. It measures 129.47mm long, 51.43mm wide and 49.69mm deep, and its folding two-pin mains prongs sit flush with the top edge when stowed. Rated energy is 54.75Wh at 10.95V, with a nameplate maximum output of 67W.

The equivalent 15000mAh capacity comes from three series-connected 21700 cells of 5000mAh each. In adapter mode the input accepts 100-240V at 1.5A and 50/60Hz; two USB outputs are rated up to 45W and a third port is limited to 33W. In power bank mode those two ports rise to 20V 3.35A, or 67W, with a 45W maximum input.

Protocol testing with a POWER-Z KM003C recorded PD3.0/PPS, UFCS, QC3.0, QC4+, FCP, SCP, AFC, DCP and Apple 2.4A support on the captive USB-C cable, matched by the second USB-C port. Fixed PDOs in charger mode cover 5V, 9V, 12V and 15V at 3A plus 20V at 2.25A, with one 5-11V 3A PPS step, while power bank mode lifts the top step to 20V 3.35A. Charging a MacBook Pro 16 measured 19.6V 3.3A, or 65W.

A front display reports per-port input and output power, estimated charge and discharge times, pass-through status, battery temperature, cycle count and state of health. Bluetooth links the unit to a phone mini-program for wallpaper switching and over-the-air firmware updates.

Inside, the screen module sits above a two-layer PCBA and a laser-welded cell stack cushioned by foam. The charger stage is a quasi-resonant flyback with synchronous rectification built around a Kiwi KP22084 GaN-integrated controller and a KP40613 synchronous rectifier with an integrated 100V MOSFET. Power bank duties fall to a Southchip SC2016AD three-in-one SoC, supported by a Cellwise CW1573 protection front-end, a WHXY CW32L012 Cortex-M0+ MCU and 128Mbit Puya PY25Q128HA flash.

Industry news compiled by Dangel Technology editorial from public reporting by Chongdiantou (charging industry media). Technical figures are reproduced as reported; verify specifications against the original source before design or procurement decisions.