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Sony VGN-AR520E Battery
Your Sony VGN-AR520E battery allows you to move freely about so that you can use it inside, outside or anywhere your heart desires. Not all batteries are the same, be sure to check the physical connection and size 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 simply means it is a stronger battery. What really is critical to a battery fitting your laptop is the physical size of the battery as well as the connection.
Major clues the li-ion battery needs replacing ASAP
- The battery has its case swollen and looks like it will explode
- The unit does not turn on at all when unplugged
- The laptop lasts under 20 minutes before it shuts itself down
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