So I haven't charged my laptop in 6 years and the battery is completely dead. If I charge it will turn on but if I disconnect it will turn off. Do I have to replace my battery?
closed as too broad by harrymc, bertieb, DrMoishe Pippik, PeterH, avirk Jan 3 at 6:07
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You can try using BatteryInfoView by NirSoft to view detailed info about your battery.
BatteryInfoView is a small utility for laptops and netbook computers that displays the current status and information about your battery. The displayed battery information includes the battery name, manufacture name, serial number, manufacture date, power state (charging/discharging), current battery capacity, full charged capacity, voltage, charge/discharge rate, and more...
For your situation, check the
Current Capacity (in %) line.
If your battery no longer has sufficient capacity to hold a charge, you will indeed need to replace it.