Chans Battery Rebuild

i have a MacBook Pro Retina that i got a couple of weeks ago, and i cant start it without having the charger plugged in, and when i take it out when its started, it shuts off, please help
Model Information:
Serial Number: C0142650DTJF90MA5
Manufacturer: DP
Device Name: bq20z451
Pack Lot Code: 0
PCB Lot Code: 0
Firmware Version: 511
Hardware Revision: 000a
Cell Revision: 1200
Charge Information:
Charge Remaining (mAh): 4963
Fully Charged: No
Charging: Yes
Full Charge Capacity (mAh): 7160
Health Information:
Cycle Count: 18
Condition: Normal
Battery Installed: Yes
Amperage (mA): 84
Voltage (mV): 7943

We can rebuild this kind of batteries. However, for this moment we haven't the cells in the stock