Macbook Battery Cycle Count (Unibody White 2010) I have a macbook white unibody 2010 (A1342) that is now 17 months old. I'm wondering if my battery is still good? The battery's information is below.

Design Capacity: 5200mAh
Current Capacity: 4578mAh (84% left)
Mac model: 6,1
Age of macbook: 17 months
Battery loadcycles: 187
Condition: Normal

Thank you!
Any Apple store or Authorized Service Provider can run a diagnostic for you within a few minutes to gauge the health of the battery for the official Apple answer to your question.

However, saving a trip and appointment and just looking at what you posted, it looks like it is in correct working order for the age. 

The design capacity is the total charge the battery was produced for. If you ran this check on the day you bought the MacBook the current capacity should have been right around 5200. Just like a rechargeable battery in a phone, toy, etc. it never fully charges to its designed capacity over time. It is just the nature of rechargeable batteries. So now, your battery when fully charged will only charge to the current capacity.

Given that you have used it for 17 months. These results seem in-line.  

According to this Apple KB Article, your model does not require any calibration. 

They also publish some tips in this KB Article.

Here's a great app for checking the battery and it gives some great definitions and links to Apple as well.

Hope that helps.