Macbook pro 2010 13" battery replacement capacity
Hi All,
I've had my 2010 13" macbook pro's battery replaced by service provider. The previous battery (that have been replaced) had a 5770 mAh original capacity. The new battery initially showed an 5770 mAh original capacity (I've seen it with the Battery Health app). Then I asked the service guy to clean the initial parts of my macbook pro. After that it showed 5450 mAh original/factory capacity. I've checked the battery details when I got home: 63.5 Wh, 10.95V, so I've read that this should be the right replacement, but I still don't get how the original capacities can be different (and changed by time) if it is the capacity when it left the factory. Did the service guy replaced the battery to an older version during the cleaning or am I too suspicious?
Many thanks for your answers!