When you change out the battery you need to do a few things here before using the system. First you need to do a SMC reset so the system forgets about the old battery. Then next thing here is properly calibrate your battery. Follow these links:
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When you change out the battery you need to do a few things here before using the system. First you need to do a SMC reset so the system forgets about the old battery. Then next thing here is to properly calibrate your battery. Follow these links:
* [https://support.apple.com/en-us/HT201295|Reset the System Management Controller (SMC) on your Mac]
* [http://www.makeuseof.com/tag/calibrate-maintain-macbook-battery-best-performance|Calibrating Your MacBook Battery]
I would also recommend installing this app so you get a better view on what your systems battery: [http://www.coconut-flavour.com/coconutbattery|coconutBattery]. Post a screen shot before and after you do the SMC reset and calibrating in your question so we too can see whats happening.
Did the battery come with any documentation?
When you change out the battery you need to do a few things here before using the system. First you need to do a SMC reset so the system forgets about the old battery. Then next thing here is properly calibrate your battery. Follow these links:
* [https://support.apple.com/en-us/HT201295|Reset the System Management Controller (SMC) on your Mac]
* [http://www.makeuseof.com/tag/calibrate-maintain-macbook-battery-best-performance|Calibrating Your MacBook Battery]
I would also recommend installing this app so you get a better view on what your systems battery: [http://www.coconut-flavour.com/coconutbattery|coconutBattery]. Post a screen shot before and after you do the SMC reset and calibrating in your question so we too can see whats happening.