memory card battery?

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I Know Saturn and Dreamcast do but the Dreamcast VMU only uses it for the screen.

Yakumo

 

Some third party PSOne memory cards have a battery as well as N64. I don't know about PS2 third party cards and for Xbox and GC as well.

 

NeoGeo. And I wouldn't try replacing it either, it's easier to buy a new one or find a PCMCIA S-Ram card with replaceable battery.

 

None of the official nintedo 64 & gamecube memory cards have batteries in them. Its only when you buy some of the 3rd party jobs that you risk having a battery in them.

Putting a battery in a memory cards seems strange to me.

 

Official Xbox memory cards don't have any batteries either. Don't know about 3rd party cards.

 

I think its cheaper to use a battery and some cheap RAM than to use actual flash memory.