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Replacement Commodore 64 Power Supplies

Brand New Designed C64 PSU's

High-quality Commodore 64 replacement power supply unit (PSU). Designed specifically for C64 and VIC-20 systems to preserve them in a pristine condition for years to come. Stabilized and filtered +5V/2.0A DC along with 9V/1.1A AC ensure continued error-free operation of your C64. Robust and sturdy chassis with an OLED digital display, touch sensor, and different styles and colors to chose from. Fully fused and electrically protected, with round DIN7 plug matching the original C64 PSU pinout.


  • Replacement power supply for Commodore 64 and VIC-20

  • Stabilised 5V/2.0A DC output with anti-ripple filter

  • OLED display with digital voltage and time readout

  • Touch sensor for toggling OLED display screens

  • Transformer-generated 9V/1.1A AC output

  • Over-voltage and over-current protection

  • Fused on AC and DC side and fully isolated

  • High quality chassis with digital OLED display

  • Durable and thick cables on both sides

  • Runs virtually cold

  • Weight only 0.6 kg (1.3 lb)

  • Compact enclosure with modern shape 125 mm x 59 mm x 42 mm (5.0" x 2.3" x 1.6")

  • Round DIN7 plug with 5V DC and 9V AC

  • UK-standard 230V AC power plug (U.K., Ireland, Malta, Cyprus, Malaysia, Singapore)

  • Choice of Plug, UK, AUS, EUROPE & USA, (US-standard 120V AC power plug - U.S, Canada, Mexico, Japan, and others)


A new lease of life

Commodore 64 and 128 systems have sold in over 20 million units worldwide, an impressive number even by today's standards. However, unlike modern computers, tablets, and smartphones, a considerable number of C64 and C128 systems are still operational over 30 years after being introduced to the public. In proper hands they have a chance of surviving another 30 years. Yet a common failure among Commodore 64/128 systems is the power supply. This is specifically why we have designed a replacement C64 and C128 PSU. This series of power supplies gives your system a fresh start, minimizing the risk of damage due to an ageing factory power supply.

Robust and reliable design

The C64 PSU was designed from scratch as a high-quality replacement for the original Commodore power supply. It contains a +5V/2.0A DC switching power module with an anti-ripple filter, along with a true transformer-based 9V/1.1A AC module. The power supply has a sturdy custom-made chassis with an OLED digital display monitoring the output voltage and uptime.

Modern style chassis

our C64 / C128 power supplies resemble a modern power supply with a slick shape of 125 mm x 59 mm x 42 mm (5.0" x 2.3" x 1.6"). It's a lot lighter and more compact than the original C64 power supplies. Available in black and grey.

OLED digital display

The OLED digital series has a display showing the output voltage of the power supply, the uptime, and the total time of operation (stored in internal non-volatile memory). This allows to quickly monitor the basic state of the power supply. Touching the sensor below the display will toggle the currently displayed screen.

Black or Grey?

All our power supplies are available in black and light gray. The performance between both types doesn't differ, it's a matter of taste. The LED and OLED displays (depending on the version) are generally black with white illumination, being more pronounced on the gray edition and giving an interesting color combination. On the other hand the LED/OLED display blends in the black version better, being barely visible when not powered. If at the point of purchase you are uncertain about the item version in the cart, please drop us a message with the desired chassis style, color, plug type and voltage (US/EU/UK/AU).

Precision Development

The development of these replacement power supplies has been driven by a sense of sentiment for retro-computing, combined with accuracy and dedication in creating electrical equipment to be proud of. It goes without saying, that the electronics has been designed by skilled professionals, thoroughly tested, and improved based on years of feedback from thousands of users. However, Keelog have also put a lot of effort into the visual appearance of our power supplies. They designed and manufactured the enclosures with CNC and injection molding technologies. The LED and OLED panels are carved from PMMA to give a modern appearance to the power supplies. Hundreds of hours of designing and perfecting have been put into these devices, to create not only a safe and robust power supply, but also a satisfying visual improvement to your system.

Safety first

Our C64 PSU is designed to be safe for the user, and safe for the computer. It's protected from over-current and over-voltage, and fused on both the AC and DC sides. Nevertheless, it's mandatory to say that this is a 120/230V AC power device, which should not be opened, tampered with, or used for anything else than powering an unmodified Commodore 64 computer. It's intended for indoor usage only, the maximum rated current should not be exceeded, and proper ventilation should be ensured. For reference, a picture of the opened power supply is shown below.

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