Macbook pro “13” mid 2010 battery not holding charge.
According to the images you have provided, your battery is not holding its charge and will need to be replaced.

In the first image, it says replace now which indicates that it is time for a replacement. In the second image, it also says it is not charging. 


  All rechargeable batteries have a limited lifespan and may eventually
  need to be serviced or recycled. Your own battery’s lifespan will vary
  depending on how you use your device as well as the settings you
  choose for it.


Replacement details are avaliable here: https://support.apple.com/en-gb/mac/repair/service

The cost depends on what size mac you have and if you have apple care