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12 Volt Power Supply

A power supply is an electrical component that supplies electric power, usually to an electrical device. The term is common in reference to devices that convert one form of electrical energy into another, such as a power supply for a computer. A power supply also refers to an internal part of many electronic devices. Browse the top-ranked list of 12 volt power supplies below along with associated reviews and opinions.

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  1. HQRP - 2-Pack 12V 1A AC Adapter for LED Strip Light, Low Voltage Devices, Wall Mounted 100-240V, Black, ETL Listed

    SKU: J3ZSLCF52S

    Product Description

    A 2-pack of black ETL-listed adapters providing stable 12V 1A DC power for low voltage devices.
    See all Charging Blocks & Power Adapters
    Your price for this item is $16.95
  2. HQRP - 12V Charger for Pill XL Portable Bluetooth Speaker B0514 DYS404-120300W Pill-XL PillXL by Dre Pill PillXL PillXL

    SKU: J3ZSLCFFLQ

    Product Description

    A reliable 12V 3A power adapter for Pill XL Bluetooth speakers, ensuring stable charging and playback.
    See all Charging Blocks & Power Adapters
    Your price for this item is $17.90
  3. HQRP - 12V DC 2A 24W LED Driver Power Supply, 100-240V AC Input, Terminal Block, ETL Listed - White

    SKU: J3ZSLCF4V3

    Product Description

    A white ETL-listed LED driver converting 100-240V AC to 12V DC 2A for LED installations.
    See all LED Light Strips
    Your price for this item is $12.40
  4. HQRP - 120V to 12V AC 40VA Transformer for Fountain Pump, Lighting Power Supplies, Audio Equipment 120v-to-12v, UL Listed

    SKU: J3ZSLCF449

    Product Description

    A reliable UL-listed transformer delivering stable 12V AC output for pumps, lighting, and audio equipment.
    See all Charging Blocks & Power Adapters
    Your price for this item is $23.40
  5. HQRP - AC to AC Adapter for Jameco Reliapro ACU120100D0531 Straight 2.5 mm Female Plug 12V Transformer, ETL Listed

    SKU: J3ZSLCH8R4

    Product Description

    A reliable 12V AC adapter with a straight 2.5 mm female plug, ideal for Jameco device compatibility.
    See all Charging Blocks & Power Adapters
    Your price for this item is $19.95
  6. HQRP - 120V to 12V AC 40VA Transformer for Fountain Pump, Lighting Power Supplies, Audio Equipment 120v-to-12v, ETL Listed

    SKU: J3ZSLCF457

    Product Description

    A reliable black transformer delivering stable 12V AC power for pumps, lighting, and audio equipment.
    See all Charging Blocks & Power Adapters
    Your price for this item is $24.95
  7. CORSAIR - 12-Pin GPU Power Cable, Sleeved - Black

    SKU: J39QHHVQRK

    Makes a big difference, looks great...Love Corsair. Very thankful that Corsair released this....Looks great....So so, but its the only ones Best buy carries so. yea

    Product Description

    A black sleeved power cable that connects modular power supplies to 12-pin GPUs for easy cable management.
    See all Power Supplies
    Your price for this item is $19.99
  8. CORSAIR - RMe Series RM1000e 80 PLUS Gold Fully Modular Low-Noise ATX 3.1 and PCIE 5.1 Power Supply - Black

    SKU: J39QHT28XQ

    Works great and yhe Best Buy team did a wonderful job getting it ready for pick up quickly....Great experience again with Best Buy and staff!!...Best ever

    Product Description

    A fully modular black power supply offering low-noise operation, Cybenetics Gold efficiency, and ATX 3.1 compatibility.
    See all Power Supplies
    Your price for this item is $139.99
    Save $50
    The previous price was $189.99

FAQ

A 12 volt power supply is commonly used to power devices such as LED strip lights, routers, CCTV cameras, small fans, and some audio equipment. Always check your device’s specifications to ensure compatibility.

Most 12 volt power supplies output DC (direct current), which is suitable for DC-powered devices. If your device requires AC (alternating current), you’ll need an appropriate AC power supply or an inverter.

Key features to consider include the maximum current output (amperage), over-voltage protection, short-circuit protection, and whether the power supply has certifications like UL or CE for quality assurance.

To connect, match the polarity (positive and negative terminals) and ensure the connector type fits your device. Always power off and unplug the supply before making connections to avoid damage.

Some 12 volt power supplies are designed for outdoor use and offer weatherproof or waterproof casings. Check the product specifications for IP ratings or outdoor compatibility before using it outside.