Alfatronix PV-USB2 Hidden 12V/24V USB-A Charger 5V 2.1A
011-PVUSB-2
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Alfatronix PV-USB2 Hidden USB Charger
12V / 24V DC Input | USB-A 5V 2.1A Output | Under-Dash Module
The genuine Alfatronix PV-USB2 is a compact, charger-only module for permanently installed 12V or 24V DC systems. It converts a 9–32V input to a regulated 5V USB-A supply and is intended for hidden installation behind a dashboard, control panel or inside protected equipment—not as a decorative panel-mount socket.
Key Features
- ✔ Wide-range input: Connects directly to nominal 12V or 24V DC systems.
- ✔ Single USB-A output: Regulated 5V DC supply rated up to 2.1A.
- ✔ Device detection: Designed to charge compatible Apple and Android USB devices.
- ✔ Low standby draw: Less than 1.7mA quiescent current.
- ✔ Commercial-grade protection: Automatic short-circuit shutdown and restart after the fault is removed.
Technical Specs
| Input voltage | 9–32V DC |
| Output voltage | 5V DC ±0.2V |
| Maximum output | 2.1A, single USB-A |
| Typical efficiency | 90% |
| Quiescent current | <1.7mA |
| Output noise | <50mV peak-to-peak |
| Ingress rating | IP30 |
| Dimensions / weight | Approx. 113 × 24 × 15mm / 17g |
| Compliance | ISO 7637-2; CE and E marked |
Compatibility / Fitment Guide
| Check | Required specification | Fitment decision |
|---|---|---|
| Vehicle / vessel supply | Nominal 12V or 24V DC; actual operating voltage 9–32V | Suitable for correctly fused negative-earth DC systems within this range. |
| Device connection | USB Type-A lead; device accepts standard 5V USB charging | Maximum available current is 2.1A; the connected device controls the current it draws. |
| Mounting type | Hidden / under-dash charger module | Allow at least 113 × 24 × 15mm plus room for terminals and the USB cable; no front bezel is supplied. |
| Environment | Dry, protected location; IP30 | Appropriate behind an internal dash or panel; not for exposed helm, splash zone or wet compartment. |
| Circuit protection | Correctly fused DC feed | Alfatronix PV-USB-H1 is the related 1.2m wiring harness with an in-line 2A fuse; it is not included unless stated. |
Not suitable for: 230V AC input, USB-C-only cables without an adaptor, USB Power Delivery or Quick Charge negotiation, laptops requiring high-power USB-C PD, exposed-deck installation, or use as a panel-mounted passenger socket.
Part Number Cross Reference
| Manufacturer | Alfatronix |
| Manufacturer part number | PV-USB2 / PVUSB-2 |
| 4Boats SKU | 011-PVUSB-2 |
| Related harness | PV-USB-H1 — optional 1.2m fused lead, not included |
Frequently Asked Questions
Does this fit both 12V and 24V systems?
Yes. No manual voltage selection is required, provided the live supply remains within 9–32V DC.
Is this a visible dashboard USB socket?
No. PV-USB2 is the charger-only hidden module intended for protected under-dash or behind-panel installation.
Will it fast-charge a USB-C laptop?
No. It provides standard 5V USB-A charging up to 2.1A and does not support USB Power Delivery or proprietary high-voltage fast-charge modes.
Can it be installed where it may get wet?
No. Its IP30 rating requires a dry, protected mounting location.
Installation note: Isolate the supply before wiring, observe polarity and protect the feed with the correct fuse for the conductor and installation.
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