Sega Dreamcast Controller Port Upgrade Mod Kit


Mod Kit Includes:

  • 1 x Genuine made in Japan Maxell CR2032 battery
  • 1 x High quality battery holder (Harwin)
  • 1 x High quality resettable fuse (LittleFuse)
  • 1 x Diode (Nexperia)
  • 1 x 47uF Electrolytic Capacitor (105C Panasonic)
  • 1 x 13ohm Resistor (Vishay)


  • High quality kit using all branded components
  • Easily replace the old battery
  • Longer lasting battery life over the standard rechargeable ML2032
  • No more replacing the fuse to fix a dead controller port

1 in stock

SKU: KIT-SDC-CON Categories: , ,


The highest quality mod kit to upgrade or repair the Sega Dreamcast controller port including a resettable fuse, long life CR2032 battery, high quality battery holder and a diode to convert the controller port from using a rechargeable battery to a long life one. Everything you need to future proof the controller port.

Resettable Fuse

The controller port occasionally does stop working because the fuse has died. Replacing it with a resettable fuse will mean the fuse never has to be changed again. Turning the Dreamcast off and on again is enough to reset the fuse to its working condition.

None-rechargeable Battery Upgrade & Diode

This may seem counter-intuitive but it will actually produce less waste and hassle in the long run. The ML2032 rechargeable battery does die and when it does it is much more expensive to replace. They really do not last long. Replacing it with a none-recharging long life CR2032 will mean the battery will not need replacing as often because battery life will last much longer. A diode is included to prevent a charge being sent to the battery.

Battery Holder

The Dreamcast comes with a none replaceable surface mount battery which is soldered in place and requires de-soldering once dead. Putting a holder in its place is a no-brainer with benefits that really don’t need spelling out. The holders that come with this kit are high quality branded ones that will last a life-time.

Additional information

Product Type

Mod Kit

Console Make


Console Model


Mod Attribute

Battery Holder, Controller Port Upgrade, CR2032, Fuse, Resettable Fuse


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Product Credits

Old forum posts which detail using a CR2032 and Diode.

2016 –

2017 –,44108.msg328717.html

This mod was brought to wider attention in 2020 in a video by Voultar. –