Teardown: OPPO 33W Pocket Power Bank Runs INJOINIC IP5387 SoC and a Built-In Woven Cable
2026-10-14 · Compiled by Best IT Parts from public industry reporting
A teardown of the OPPO 33W Pocket SuperVOOC power bank, model PBSV16, documents a 10000mAh design whose detachable woven USB-C cable doubles as a carrying lanyard. The nameplate rates 37.0Wh of energy and 5200mAh at 5V/3A rated capacity. USB-C input accepts 5V/3A, 9V/2.5A and 12V/1.87A for 22.5W maximum; USB-C output covers 5V/3A, 9V/2.5A, 11V/3A, 12V/1.87A and 15V/1.5A for 33W maximum, and the USB-A port matches the same 33W ceiling, with 5V/4A available when both ports run together. Measured size is 110.62mm by 70.20mm by 18.12mm at 202.4g.
Protocol testing with a POWER-Z KM003C found UFCS 1.0, SuperVOOC, QC3+, QC4+, PD3.0/PPS and DCP on both ports, with USB-C PDOs of 5V/3A, 9V/2.5A, 12V/1.87A and 15V/1.5A plus a 5-11V/3A PPS range and a 5-11V/2A UFCS window. The cell is a GFL 126280M rated 3.7V nominal, 10000mAh and 37.00Wh, cushioned by a large foam pad and monitored by an NTC thermistor.
Inside, the cell and PCBA sit side by side. The board is built around an INJOINIC IP5387 power-bank SoC supporting 1S to 6S packs, bidirectional synchronous buck-boost up to 140W input/output and conversion efficiency above 96%, with PD3.2, UFCS, QC2.0/3.0/3+, FCP, AFC, SCP and BC1.2. Two INJOINIC IP04N03BY buck-boost MOSFETs (30V, 3.5mOhm, PDFN3030) sit alongside a 3.3uH alloy inductor and CRM CRMJTU0208A VBUS FETs (20V, 9.8mOhm, SOT23-3). Battery protection uses dual iCM CM100E-HENN ICs in DFN1.8x1.4-6L with three CRMQTU0202A FETs (20V, 1.75mOhm, PDFN3333), a CHAOHUI 25V 100uF capacitor and an NTC thermistor, while a dark light-shield sponge prevents LED bleed.
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Technical details are reproduced as reported. Verify specifications against the original source before design or procurement decisions.