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Three protocols and a voltmeter

Kohree 12 V panel socket with USB-C PD and dual QC 3.0, LED voltmeter, toggle

A panel-mounted 12 V socket with a USB-C PD port and QC 3.0 USB outputs, an independent toggle switch and a built-in LED battery voltage display.

Kohree 12 V panel socket with USB-C, QC 3.0 ports and a voltage display

Kohree 12 V panel socket with USB-C PD and dual QC 3.0, LED voltmeter, toggle

A panel-mounted 12 V socket with a USB-C PD port and QC 3.0 USB outputs, an independent toggle switch and a built-in LED battery voltage display.

Socket standard
A panel-mounted 12 V outlet with integrated USB charging, from the title
Current rating
Nowhere in the listing
USB outputs
A USB-C Power Delivery port and dual QC 3.0 USB outputs, first and third bullets
Protocols
USB Power Delivery on the Type-C port and Quick Charge 3.0 on the USB ports, stated as up to four times faster than conventional charging and 40 % more efficient than QC 2.0, third bullet
Cut-out dimensions
Nowhere in the listing
Ingress rating
A fully sealed construction is described, second bullet; no IP figure is given
Wiring requirements
An independent on/off toggle switch to save power and extend service life, second bullet; a built-in digital LED voltage monitor showing the vehicle battery voltage in real time, fourth bullet; PA, CSA and PA66 materials with heat, wear and oxidation resistance, fifth bullet
Amazon reference
B09CKQJQDT (same reference on 6 Amazon marketplaces)
EAN
0850077750557
  • A battery voltmeter built in, which turns an outlet into a diagnostic
  • Both modern charging protocols: USB-C Power Delivery and QC 3.0
  • No current rating for the 12 V outlet itself

Best for: A camper dashboard where phones charge and the battery needs watching.

≈ $18 / €18
Check price on Amazon

Specifications

Socket standard
A panel-mounted 12 V outlet with integrated USB charging, from the title
Current rating
Nowhere in the listing
USB outputs
A USB-C Power Delivery port and dual QC 3.0 USB outputs, first and third bullets
Protocols
USB Power Delivery on the Type-C port and Quick Charge 3.0 on the USB ports, stated as up to four times faster than conventional charging and 40 % more efficient than QC 2.0, third bullet
Cut-out dimensions
Nowhere in the listing
Ingress rating
A fully sealed construction is described, second bullet; no IP figure is given
Wiring requirements
An independent on/off toggle switch to save power and extend service life, second bullet; a built-in digital LED voltage monitor showing the vehicle battery voltage in real time, fourth bullet; PA, CSA and PA66 materials with heat, wear and oxidation resistance, fifth bullet
Amazon reference
B09CKQJQDT (same reference on 6 Amazon marketplaces)
EAN
0850077750557

An outlet that also tells you how the battery is doing.

The voltmeter

A digital LED display of the vehicle battery voltage, in real time, built into the socket panel.

Twelve point two volts is about half discharged on a lead-acid battery. Eleven point eight is trouble. Having that number on the dashboard rather than behind a multimeter in a locker changes the question from “will it start” to a glance.

Four sockets in this family; one has it.

The ports

USB-C with Power Delivery. Two QC 3.0 USB outputs. Both current protocols, named — which for a socket that has to charge whatever people own is the relevant specification.

The switch

An independent on/off toggle. USB modules draw a small quiescent current whenever they are live, and a fortnight parked turns that into real amp-hours. A switch that cuts them is the difference between an outlet that costs nothing idle and one that does.

The materials

PA, CSA and PA66, with heat, wear and oxidation resistance described.

The lines this listing leaves blank

The current rating of the 12 V outlet itself. The panel cut-out, on a part whose whole installation is a hole in a dashboard. And any IP figure behind the sealed construction.

Availability

German, French, Italian and Spanish Amazon stores quoted 18 € to 19 € when this page was compiled.

American Amazon store carries it too, priced in its own currency, which the euro range above deliberately omits.

British Amazon catalogue carries an entry for it, with nobody selling.

These figures are what Keepa reported on the day this page was last updated. Availability and pricing move without notice.

Prices quoted in this text were read on 16 September 2026. The live price is at the top of the page.

More 12 V sockets

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    A waterproof 12 V accessory socket with a 0.6 metre lead, an inline fuse and a retaining nut, for 12 to 24 V vehicles and boats.

    Socket standard
    A 12 V accessory socket; the listing states explicitly that it is NOT suitable for a cigarette lighter element and that inserting one would burn the socket, second bullet
    Current rating
    5 A, from the title
    USB outputs
    None
    Protocols
    None
    Cut-out dimensions
    Nowhere in the listing
    Ingress rating
    A waterproof and dustproof cover, fourth bullet; no IP figure is given
    Wiring requirements
    A red positive and black negative lead of 0.6 m with an inline fuse for overload protection; each socket is fixed to a panel with a retaining nut, third and fifth bullets
    Amazon reference
    B08524144H (same reference on 4 Amazon marketplaces)
    EAN
    0778836640034
    • It states plainly that a lighter element must not be used in it, and what happens if one is
    • An inline fuse is supplied on the lead rather than left to be added
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    ≈ €5
    Check price on Amazon
  • RGBer 12 V accessory socket with ring terminals and an inline fuse

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    Socket standard
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    Current rating
    Nowhere in the listing
    USB outputs
    None
    Protocols
    None
    Cut-out dimensions
    Nowhere in the listing
    Ingress rating
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    Wiring requirements
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    Amazon reference
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    EAN
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    • No current rating at all, which is the first question about a socket

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    Socket standard
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    Current rating
    20 A, first bullet — four times the PPpanda socket in this family
    USB outputs
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    Protocols
    None
    Cut-out dimensions
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    Ingress rating
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    Wiring requirements
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    EAN
    0769256680960
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    Best for: A compressor or a cool box outlet that has to carry real current.

    ≈ £9 / €11
    Check price on Amazon

Others on the same shelf

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    Panel wattage
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    Regulation
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    EAN
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    Check price on Amazon
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    Regulation
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    EAN
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  • HOSPAOP two-pole DC isolator with a status indicator

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    Rated current
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    DC voltage rating
    500 V, from the title
    Breaking capacity
    Nowhere in the listing
    Polarity
    Nowhere in the listing
    Poles
    Two, from the title
    Trip curve
    Nowhere in the listing
    Mounting
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    EAN
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All 12 V sockets