Hello, my macbook pro switches off randomly whenever i switch it on. it sometimes switches off once or three times at the same time while it is on charge.please assist me.

Battery Information:
  Model Information:
  Serial Number:          W02085DE4D3LA
  Manufacturer:          SMP
  Device Name:          bq20z451
  Pack Lot Code:          0
  PCB Lot Code:          0
  Firmware Version:          201
  Hardware Revision:          000a
  Cell Revision:          165
  Charge Information:
  Charge Remaining (mAh):          4725
  Fully Charged:          Yes
  Charging:          No
  Full Charge Capacity (mAh):          4820
  Health Information:
  Cycle Count:          161
  Condition:          Normal
  Battery Installed:          Yes
  Amperage (mA):          0
  Voltage (mV):          12440
System Power Settings:
  AC Power:
  System Sleep Timer (Minutes):          10
  Disk Sleep Timer (Minutes):          10
  Display Sleep Timer (Minutes):          10
  Wake on AC Change:          No
  Wake on Clamshell Open:          Yes
  Wake on LAN:          Yes
  Current Power Source:          Yes
  Display Sleep Uses Dim:          Yes
  PrioritizeNetworkReachabilityOverSleep:          0
  RestartAfterKernelPanic:          157680000
  Standby Delay:          4200
  Standby Enabled:          0
  Battery Power:
  System Sleep Timer (Minutes):          0
  Disk Sleep Timer (Minutes):          10
  Display Sleep Timer (Minutes):          0
  Wake on AC Change:          No
  Wake on Clamshell Open:          Yes
  Display Sleep Uses Dim:          Yes
  Reduce Brightness:          Yes
  RestartAfterKernelPanic:          157680000
  Standby Delay:          4200
  Standby Enabled:          0
Hardware Configuration:
  UPS Installed:          No
AC Charger Information:
  Connected:          Yes
  ID:          0x0100
  Wattage (W):          60
  Revision:          0x0000
  Family:          0x00ba
  Serial Number:          0x00bfc33b
  Charging:          No

sometimes switches off once or three times at the same time while it is on charge
Might be the adapter > Apple Portables: Troubleshooting MagSafe adapters

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      PCB Lot Code:    0
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      Display Sleep Timer (Minutes):    15
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