Macbook 2, 1 battery issues and high CPU utilization

I haven't used my macbook 2 1 (intel core duo, 2.16GHZ) for 3 or 4 months. Before it was working fine but now it says that the battery is not charging, although the laptop still works when plugged in. The power report from the system profiler is at the bottom of the thread.

I use this computer primarily for music making using native instruments reaktor, but have found that the CPU utilisation of my patches has doubled compared to when I was using them 4 months ago. 5've not got any other programs open while doing this and all the audio set up is exactly the same as before.

Will buying a new battery sort this out? Any ideas for how to bring the CPU utilisation back to how it was before?

Thanks in advance to anyone who can help!

______

Battery Information:

Model Information:

Manufacturer: DP

Device name: ASMB016

Pack Lot Code: 0002

PCB Lot Code: 0000

Firmware Version: 102a

Hardware Revision: 0500

Cell Revision: 0102

Charge Information:

Charge remaining (mAh): 0

Fully charged: No

Charging: No

Full charge capacity (mAh): 0

Health Information:

Cycle count: 462

Condition: Replace Now

Battery Installed: Yes

Amperage (mA): 0

Voltage (mV): 5524

System Power Settings:

AC Power:

System Sleep Timer (Minutes): 10

Disk Sleep Timer (Minutes): 10

Display Sleep Timer (Minutes): 10

Automatic Restart On Power Loss: No

Wake On AC Change: No

Wake On Clamshell Open: Yes

Wake On LAN: No

Current Power Source: Yes

Display Sleep Uses Dim: Yes

Battery Power:

System Sleep Timer (Minutes): 15

Disk Sleep Timer (Minutes): 0

Display Sleep Timer (Minutes): 15

Wake On AC Change: No

Wake On Clamshell Open: Yes

Display Sleep Uses Dim: Yes

Reduce Brightness: Yes

Hardware Configuration:

UPS Installed: No

AC Charger Information:

Connected: Yes

ID: 0x0100

Wattage (W): 60

Revision: 0x0000

Family: 0x00ba

Serial Number: 0x005a207d

Charging: No