Determining Battery Health With Coconut?

[$MacUser$]

I have a new Macbook air and it seems like I'm only getting 2/3 battery life...timed, using Apple's standards. 50% brightness, light web browsing. However, coconutBattery is telling me the overall capacity is ever so slightly higher than rated capacity?

 

[miles01110]

Battery life is dependent on usage, not what Coconut battery tells you.

 

[GGJstudios]

Read the BATTERY LIFE FROM A CHARGE section of the following link. This should answer most, if not all, of your battery questions:

Apple Notebook Battery FAQ​

 

[$MacUser$]

Read the BATTERY LIFE FROM A CHARGE section of the following link. This should answer most, if not all, of your battery questions:

Apple Notebook Battery FAQ​

I had read that prior to posting. I'm following Apple's guidelines to a tee...if not being more conservative. And am still getting about 2/3 advertised life from the batt.

Coconut has gone from showing the overall capacity at notably more than rated...now it's showing 98% of rated. I don't know exactly what's going on.

 

[GGJstudios]

I had read that prior to posting. I'm following Apple's guidelines to a tee...if not being more conservative. And am still getting about 2/3 advertised life from the batt.

Coconut has gone from showing the overall capacity at notably more than rated...now it's showing 98% of rated. I don't know exactly what's going on.

As the Battery FAQ states:

Be aware that battery readings are not 100% accurate and they fluctuate up and down, so if your brand new battery health is somewhat less than 100% or if it fluctuates up and down over time (100%, 91%, 95%, etc.), don't worry. It will not only decline. For example, if your battery health is 92% one day, it could be back up to 97% a few days or weeks later. It is not a one-way fluctuation. This is completely normal.