What would cause a bios battery to die?

I've been through three in 3 years on my Vaio. The closk starts losing time and then I replace the battery. It's happened three times now.
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More about what bios battery
  1. Best answer
    Maybe you're not keeping your laptop cool enough. Heat has a way of lowering the lifespan of batteries, including the one powering your BIOS.
  2. I've read that maybe it's a faulty motherboard. Would there be other symptoms? I've also had to replace the hard drive a year ago. It's coming up on three years old.
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