Lenovo K4450 Hardware Maintenance Manual - Lenovo K4450 and K4450A - Page 30
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• If the voltage is more than +12.0 V dc, discharge the battery pack until the voltage becomes less than +12.0 V dc and then recharge the battery pack. If the voltage still is less than +12.0 V dc after recharging, replace the battery pack. Note: Recharging will take at least three hours, even if the battery status indicator does not turn on. 5. Replace the system board if the new battery pack is not charged. 24 Hardware Maintenance Manual
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•Ifthevoltageismorethan+12.0Vdc,dischargethebatterypackuntilthevoltagebecomesless
than+12.0Vdcandthenrechargethebatterypack.Ifthevoltagestillislessthan+12.0Vdcafter
recharging,replacethebatterypack.
Note:
Rechargingwilltakeatleastthreehours,evenifthebatterystatusindicatordoesnotturnon.
5.Replacethesystemboardifthenewbatterypackisnotcharged.
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HardwareMaintenanceManual