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Sony VGN-SR490J Battery
Your Sony VGN-SR490J battery makes your laptop portable so that you can use it where you want. It is OK to buy a battery with more milliamps, because it simply implies that the battery will last longer. What is important is the actual size of the battery and the connection it has. The more power the battery has, the longer you will be able to use the laptop when fully charged. Because no battery is the same, make sure and double-check the size and model number in order to make sure it is similar to the old battery.
What happens when my Sony battery is failing?
- The laptop lasts less than half an hour before it dies
- The unit does not turn on at all when unplugged
- The battery has its case swollen like its about to burst
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