Introduction
After a few years, the clock battery in your PlayStation 2 gets empty and the console can't save date and time anymore. This guide shows you how to replace the clock battery in your PS2.
Please note: This guide shows the European model (SCPH-90004). Some models with other region codes may not have a clock battery.
Tools
Parts
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            Turn off your PlayStation 2 and remove the disc and Memory Card. 
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            Turn over the PlayStation 2 and put it on a soft surface (e.g. a towel). 
 
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            Locate the six covers. 
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            Two are located underneath the feet. 
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            One cover is located underneath the Void sticker. 
 
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            Remove the six Phillips #1 screws with a screwdriver. 
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            The screws on the right are a bit deeper inside the shell as like the rest but are the same size. 
 
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            Separate the clips at the front and the overhanging side from their mounting using a Prying Tool. 
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            Separate the two halves. 
 
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            The clock battery is located under the drive. 
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            Make sure that the sensor array for the on/off switch sits correctly when reassembling the device. 
 
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            Pull away the metal mounting on the right to remove the old button cell. 
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            Replace the old button cell/clock battery with a new button cell type CR 2032 with 3V of voltage. 
 
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To reassemble your device, follow the above steps in reverse order.
5 comments
Simple and easy to follow. I really do miss how straightforward it used to be to take apart game consoles.
Melsypoo -
Everything is okay but how I can extract drive?
Memozit -
Hey Memozit,
To remove the optical drive of the PS2 follow this guide: PlayStation 2 Slimline SCPH-900xx Optical Drive Replacement
Greetings
MrJulian
MrJulian -
I opened up my slim silver ps2 scph-90001, can't find the cmos battery anywhere. It's not under the fan, it's not under the motherboard. This is the American silver version. I have the replacement battery I just don't know where to put it.
Cory -
Hey Cory,
The PS2 shown in the guide is a European model (SCPH-90004) which has a CMOS battery. The guide mentions that other region models may not have a clock battery which could be the case on 01 models (Northern America).
Greetings
MrJulian
MrJulian -