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Sony PCG-F520 Battery
Your Sony PCG-F520 battery makes your laptop portable which gives you the opportunity to use it anywhere you please. The larger the battery, the longer it will last when fully charged. It is OK to buy a battery with more milliamps, as it suggests the battery will last a bit longer on one charge. What is important is the physical size of the battery as well as the connection. Because no battery is the same, make sure and double-check the part number of the new battery and compare it to the old battery.
Major signs Sony battery needs a replacement ASAP
- The laptop lasts less than half an hour before it dies
- The laptop refuses to turn on at all when unplugged
- The battery gets puffy like its about to burst
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