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Sony VGN-CR509E Battery
Your Sony VGN-CR509E battery allows you to move freely about so as to work or play inside, outside or anywhere your heart desires. 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. More amps in a battery basically means the longer you will be able to use the laptop on one charge. It is OK to buy a battery with more milliamps, it just means the battery will go further on a single charge. What is truly important is the connection type and physical size of the battery.
General indicators that your the li-ion battery needs replacing ASAP
- The laptop lasts less than half an hour before it shuts itself down
- The laptop refuses to turn on when it is not plugged in
- The laptop battery is puffed up like its about to burst
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