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Sony VGN-CS290J Battery
Your Sony VGN-CS290J battery makes your laptop portable so that you can use it wherever you fancy. The more power the battery has, the longer you will be able to use the laptop when fully charged. It is OK to buy a battery with more milliamps, as it suggests the battery will last a bit longer on one charge. What is important is the connection type and physical size of the battery. Because no battery is the same, be sure to check the model number and compare it to the old battery.
What warnings should I watch out for to know if my Sony battery needs to be replaced?
- The unit does not turn on when it is not plugged in
- The laptop lasts less than half an hour while using the battery only
- The laptop battery is puffed up and looking like it is going to burst
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