Battery "Not Charging"

My laptop and battery has always been fine but now when i plug in my charger its saying NOT CHARGING. The green light is on normal on the charger. Is it my battery dead out of nowhere?

When I click the "Not Charging" it says "Condition: Replace Now"

Battery Information:

Model Information:

Manufacturer: SMP

Device name: ASMB016

Pack Lot Code: 0000

PCB Lot Code: 0000

Firmware Version: 0110

Hardware Revision: 0200

Cell Revision: 0102

Charge Information:

Charge remaining (mAh): 0

Fully charged: No

Charging: No

Full charge capacity (mAh): 0

Health Information:

Cycle count: 1221

Condition: Replace Now

Battery Installed: Yes

Amperage (mA): 0

Voltage (mV): 9787

Hardware Overview:

Model Name: MacBook

Model Identifier: MacBook4,1

Processor Name: Intel Core 2 Duo

Processor Speed: 2.4 GHz

Number Of Processors: 1

Total Number Of Cores: 2

L2 Cache: 3 MB

Memory: 2 GB

Bus Speed: 800 MHz

Boot ROM Version: MB41.00C1.B00

SMC Version (system): 1.31f1

Serial Number (system): WQ828AV10P1

Hardware UUID: 841AA342-8E7A-5F2C-8D48-6F36F1A4B38D

Sudden Motion Sensor:

State: Enabled

Thanks!