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Sony VGN-SZ390P Battery
Your Sony VGN-SZ390P battery allows you to move freely about so that you can use it anywhere you please. 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. Because no battery is the same, be sure to check the part number of the new battery and compare it to the old one. The larger the battery, the longer it will last on a single charge.
Cues of a declining li-ion battery
- The battery has its case swollen and looking like it is going to burst
- The unit refuses to turn on when it is not plugged in
- The laptop lasts way less than it used to while unplugged
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