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i haven't used me mac for like 3 months cause the power adapter broke, i bought a new one , the mac turns on and works fine but it wont charge

Battery Information:

Model Information:
Serial Number:Wxxxxxxxxxxxxx
Manufacturer:SMP
Device name:bq20z451
Pack Lot Code:0000
PCB Lot Code:0000
Firmware Version:0xxx
Hardware Revision:0xxx
Cell Revision:0165
Charge Information:
Charge remaining (mAh):0
Fully charged:No
Charging:No
Full charge capacity (mAh):4973
Health Information:
Cycle count:316
Condition:Normal
Battery Installed:Yes
Amperage (mA):0
Voltage (mV):8495

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
Battery Power: