Sega Dreamcast Controller Port Kit (Non-Rechargeable Battery)

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This repair and upgrade kit includes the components you need to resurrect a Sega Dreamcast with dead controller ports or date/time prompt (dead battery) and get back gaming again.

The stock components expect to have a rechargeable battery which can sometimes be difficult to find or expensive. This kit includes a "blocking diode" to allow a non-rechargeable coin cell battery to be used (3v battery not included).

The Dreamcast Controller Port Kit includes:

  • 1 Resettable Fuse
  • 1 Capacitor
  • 1 Battery Holder
  • 1 Blocking Diode


The most likely cause of dead Dreamcast ports is a blown fuse. The 72v 400mA fuse included in this kit is an upgrade from the original design as it is resettable, meaning, if the fuse blows again it will automatically reset after a power cycle. of the Dreamcast (yes, turning it off and on again!).


Capacitors keep a consistent and even flow of electricity to the controller board components. This kit includes a replacement 47uf 10v capacitor. Capacitors degrade over time so it's a good idea to replace it with a new one while you have the circuit board out. It's also possible that a bad capacitor could trip a fuse.

Battery Holder

The stock CMOS battery requires soldering to replace. This upgrade allows for easy replacement of the battery in the future without the need for soldering. Battery is not included, only the holder.

Blocking Diode

Schottky diodes are designed to allow current to flow in a singular direction which will prevent your Dreamcast from trying to recharge your non-rechargeable battery. It is installed in tandem with the resistor that is on the board.


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