Camelh :
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
this is what it says.
According to these stats everything seems to be normal as it should be, considering it is a new Macbook.
I really think you should contact Apple support for further troubleshooting without voiding your warranty and/or replacing your product if that's not possible.
Good luck!
SuperSoph_WD