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Sony VGN-FW490D Battery
Your Sony VGN-FW490D battery allows you to move freely about which gives you the opportunity to use it where you want. Because no battery is the same, make sure and double-check the part number of the new battery and compare it to the old one. Buying a battery with a higher milliamp rating is fine, as it just means the battery will last longer. What really is critical to a battery fitting your laptop is the actual size of the battery and the connection it has. The larger the battery, the longer it will last when fully charged.
Important hints the li-ion battery needs replacing
- The unit will not turn on while unplugged
- The laptop battery is puffed up like its about to burst
- The laptop does not run longer than one hour while using the battery only
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