Hi all, I have a MacBook (mid-2010 white) which I bought around four years ago.
It worked perfectly for quite a while, but I didn't use it for quite a while (9-10 months) and when I opened it up, it turned out the battery needed replacement. I got the battery replaced (by an Apple-certified store), but when I turned it on this time, the battery information showed 'Service battery' warning, and the first full charge went up only to 97% and not 100%. The store informed me that it's normal and that I can still use my Macbook normally, but after checking CoconutBattery, I was surprised that it held only 66.7% of the design capacity when it's supposed to be a new battery.
I did a recalibration (charging it to full and leaving it plugged in for two hours, then unplugging it and leaving it to drain until it dies on its own, then charging again), and it lowered the design capacity to 65.8%!
It feels a bit worrying that a supposedly new replacement battery holds only 66-65% of its' initial design capacity. Is this normal or should I get looked at again?
This is the battery information from System Information, and the CoconutBattery screenshots are attached.
Model Information:
Serial Number: W03044RMFD3LC
Manufacturer: SMP
Device Name: bq20z451
Pack Lot Code: 0
PCB Lot Code: 0
Firmware Version: 201
Hardware Revision: 000a
Cell Revision: 165
Charge Information:
Charge Remaining (mAh): 3695
Fully Charged: Yes
Charging: No
Full Charge Capacity (mAh): 3799
Health Information:
Cycle Count: 1
Condition: Service Battery
Battery Installed: Yes
Amperage (mA): -111
Voltage (mV): 12020

It worked perfectly for quite a while, but I didn't use it for quite a while (9-10 months) and when I opened it up, it turned out the battery needed replacement. I got the battery replaced (by an Apple-certified store), but when I turned it on this time, the battery information showed 'Service battery' warning, and the first full charge went up only to 97% and not 100%. The store informed me that it's normal and that I can still use my Macbook normally, but after checking CoconutBattery, I was surprised that it held only 66.7% of the design capacity when it's supposed to be a new battery.
I did a recalibration (charging it to full and leaving it plugged in for two hours, then unplugging it and leaving it to drain until it dies on its own, then charging again), and it lowered the design capacity to 65.8%!
It feels a bit worrying that a supposedly new replacement battery holds only 66-65% of its' initial design capacity. Is this normal or should I get looked at again?
This is the battery information from System Information, and the CoconutBattery screenshots are attached.
Model Information:
Serial Number: W03044RMFD3LC
Manufacturer: SMP
Device Name: bq20z451
Pack Lot Code: 0
PCB Lot Code: 0
Firmware Version: 201
Hardware Revision: 000a
Cell Revision: 165
Charge Information:
Charge Remaining (mAh): 3695
Fully Charged: Yes
Charging: No
Full Charge Capacity (mAh): 3799
Health Information:
Cycle Count: 1
Condition: Service Battery
Battery Installed: Yes
Amperage (mA): -111
Voltage (mV): 12020

