Some of my devices lose accurate time?

iplikator3333

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Jan 18, 2013
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My PS3, Wii and a lower end camcorder often lose accurate time, for instance once when I didn't use my PS3 for about months and then turned it on, the time was something like 5-15 minutes off, same thing with my camcorder I didn't use it for about 4 Months and when I recently turned it on again, The time was about 20-25 minutes off. Why is this happening?
 

iplikator3333

Honorable
Jan 18, 2013
169
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10,690






Thanks for answering, but why doesn't it happen with some my other devices as well? Pretty much all of my other devices have no problem keeping the correct time.