Same problem (2018 mpb with brand new top case/battery).
Battery Information:
Model Information:
Firmware Version: 901
Hardware Revision: 2
Cell Revision: 1876
Charge Information:
Charge Remaining (mAh): 371
Fully Charged: No
Charging: No
Full Charge Capacity (mAh): 5099
Health Information:
Cycle Count: 2
Condition: Service Recommended
Maximum Capacity: 100%
Battery Installed: Yes
Amperage (mA): -3256
Voltage (mV): 10627
coconut battery 3.9 shows the battery as 40 years old!