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Sony VPCSA31GX Battery
Your Sony VPCSA31GX battery makes your laptop portable so that you can use it where you want. Not all batteries are the same, make sure and double-check the physical connection and size and compare it to the one you are going to replace. It is OK to buy a battery with more milliamps, because it simply implies that the battery will last longer. What is truly important is the connection type and physical size of the battery. More amps in a battery basically means the longer you will be able to use the laptop on one charge.
Some warnings your battery needs replacing
- The laptop does not turn on while unplugged
- The laptop does not last longer than 45 minutes before it dies
- The laptop battery has its case swollen and looks like it will explode
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