Macbook pro 17" 3g battery status indicator stuck on 100%

Battery status indicator stuck on 100% Worked normaly until today
resetting smc does not help
Battery Information:
  Model Information:
  Serial Number:          9G95201YS4M0A
  Manufacturer:          DP
  Device name:          bq20z951
  Pack Lot Code:          0000
  PCB Lot Code:          0000
  Firmware Version:          0042
  Hardware Revision:          0001
  Cell Revision:          0119
  Charge Information:
  Charge remaining (mAh):          65262
  Fully charged:          Yes
  Charging:          No
  Full charge capacity (mAh):          65262
  Health Information:
  Cycle count:          221
  Condition:          Replace Now
  Battery Installed:          Yes
  Amperage (mA):          -1629
  Voltage (mV):          8072

I closed the lid for about 10 minutes to do something and when I came back the status seemed to be working correctly (80%) and the health now seems normal. I made no other changes. I will keep an eye on it and post if it goes haywire again. Thanks for your help
Battery Information:
  Model Information:
  Serial Number:          9G95201YS4M0A
  Manufacturer:          DP
  Device name:          bq20z951
  Pack Lot Code:          0000
  PCB Lot Code:          0000
  Firmware Version:          0042
  Hardware Revision:          0001
  Cell Revision:          0119
  Charge Information:
  Charge remaining (mAh):          9833
  Fully charged:          No
  Charging:          No
  Full charge capacity (mAh):          12217
  Health Information:
  Cycle count:          221
  Condition:          Normal
  Battery Installed:          Yes
  Amperage (mA):          -1550
  Voltage (mV):          7930

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