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Sony PCG-FX390K Battery
Your Sony PCG-FX390K battery allows you to move freely about so as to work or play anywhere in the house or even outdoors! 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. The larger the battery, the longer it will last on one charge. Because no battery is the same, be sure to check the model number and compare it to the old one.
Major indications the primary battery is in dire need of a replacement
- The laptop lasts way less than it used to while using the battery only
- The Sony laptop refuses to turn on at all when unplugged
- The battery is puffed up like its about to burst
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