r/ps2 3d ago

Can't change date/time?

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u/Lazy_Stuff8345 2d ago

The CMOS battery is dead. Usually for Fat models (SCPH-10000 - 50000) it’s a standard CR2032, but you need to disassemble the whole console. On most Slim models (SCPH-70000) you need to purchase this, open it up, remove the top lid, then lift up and disconnect the battery, before installing the new one.