Power Adapter Square
12v dc power supply Adapter with jack
12v dc power supply with switch
Power plug dimensions
Battery snap with connector
Power jack with connector
12v dc power supply with our power jack
Swap between our Regulated 12 volt supply with our Battery snap and switch
Regulated 12 volt supply with battery snap

12 Volt DC Adapter Transformer

Battery Option
Regular price $12.00
  • In stock, ready to ship
  • Inventory on the way


Our 1 or 2 amp 12 Volt power supply is Guaranteed to run all of our 5-12 Volt DC LEDs 

  • 1 Amp will run from 1 - 50 LEDs
  • 2 Amp will run from 1 - 100 LEDs

These regulated 12 volt power supply adapters will put out exactly 12 Volts of power if you hook one single LED to it, or hook the maximum number of LEDs to it. They are regulated to 12 volt and able to run delicate electronics. These UL listed Adapter / Transformers convert wall current to 12 Volt DC output, perfect for our LEDs.

  • Input: AC 120-240V 60HZ 10W
  • Output: Regulated 12V DC 1000mA or 2000mA
  • Center positive
  • Plug Diameter 5.5mm
  • Plug Length 10mm
  • Length of wire from Adapter to Plug = 57 inches

We also have a screw thread power jack that can be mounted on a panel or a flat exterior surface of your model.
Panel Mount Power Jack dreamstime

Standard Power Jack Included Free

We have a great way to bring this adapter power to your LEDs!

The power jack plugs into our power adapters. At the other end, we have added a short piece of red and black wire.

    • Mount this small power jack inside of your model.
    • make your connections on the inside of the model
    • Connect the red wire on the jack to all of the red wires on your LEDs and use shrink tube or electrical tape to protect the connection
    • Connect the black wire to all of the black wires on your LEDs, again using tape or shrink tube
    • When you are finished, plug in the adapter and enjoy your LEDs for years and years!

Plug and Unplug from the jack whenever you want.
OR get our new Adapter with Switch:

  • The on/off switch can run 100 LEDs
  • the switch is mounted 6 inches from the barrel plug

After plugging in the adapter, just press the switch once to turn on all lights, press again to turn off.

Use this adapter for your existing/already started projects. Even if you have a mix of LED and incandescent because 12V incandescent can run on this adapter too!

No more bulky, heavy, heat-generating, transformers! The new high-speed digital switching circuitry efficiently shrinks the size and weight of the transformer! It also greatly reduces heat "losses" and increases the available output power. The result is much higher efficiency as well as a much more tightly regulated output voltage. The regulated voltage is crucial for LEDs.

This 12 volt charger Transformer is one of the newer "switching adapters" which regulates the output voltage without all of that heat the older adapters can produce.

By comparison, with a small number of LEDs on a non-regulated adapter can put out up to 16 volts of power, which is too much for 5-12 volt LEDs. We do NOT recommend connecting our 5-12 Volt LEDs to a non-regulated adapter as the potential output voltage would be too high.

Easily change from 12V wall adapter over to battery and back!
If you like to run your lights on wall power, and still want the flexibility to sometimes run on a 9 Volt whenever you are not near a wall outlet, we have a solution.

With the "battery option" solution.
Wire your lights to a "male plug"
Now you can easily swap from 12 volt wall adapter
to a 9 Volt Battery
and back...
just unplugging and plugging in your lights.
Add the "battery pack" to your order on this page. You will get:

  • Power Jack with female connector added
  • 9 Volt Battery Snap/switch with female connector added
  • 1 "male plug" to wire to all of your LEDs.

Easily and safely change back and forth at any time!

Related Items You May Need

Shrink Tube - Shrink Tube provides a nice solution for protecting the exposed wire connections.

Extra Kynar Wire - The same strong, flexible wire we use on all of our bulb-style LEDs.

International Plug Adapters - Use our power adapters no matter where you live.

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Customer Reviews

Based on 45 reviews
Great power supply

I find the green indicator light to be a useful feature

John Larkin FX

Great customer service

Dewey Mullett
Great upgrade!

These are a great upgrade for my project. Perfect alternative to the 9v battery.

Larry Dean Anderson
Great company to work with.

Customer service is fantastic! They work with you to get the right product, and are willing to groups purchases together to save shipping cost.

Alfred A Caponi
very good

everything work very well thanks

Chad Prieto
The real deal.

High quality, and ready to got led kit. Evan Designs products are as premium in quality as it gets. Thank you!


Easy order online, mailed quickly


Re. 12 vdc, query cust. on how they will use the power source or show an array of options instead of blindly throwing in a panel orientated pig tail

Hi Bill,
We are truly grateful to you for taking the time out to share your thoughts and experiences with us. Your feedback is invaluable in our continuous pursuit to deliver exceptional service.
As I understand it, you are confused by the power jack we include with our 3 volt and 12 volt power supplies. This part is completely optional, you do not need to use it. The purpose of the power jack is to give you 2 pre-stripped wires, a red wire and a black wire, so that you can connect your LEDs!
If you do not need the power jack, if your project already has a port to connect the barrel plug to, you can safely discard this added part.

We are always available for support by phone at 888-764-2610 or email at help@evandesigns.com to help with any questions you may have!

Your support is appreciated!

Evan Designs

Easy-to-Use Power Adapters for Lightning/Random Flashing LEDs

I'm no electrical genius so these power supply adapters for the LEDs made it so simple to wire up the lights into my Halloween pirate cannons & plug in. Easy peasy. Thanks Evan Designs!

Great Piece of Equipment

In a world of knock offs and price gouging this was a great find. Price was right. Feels like a quality item, and works as intended.

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