Replace with 67% battery health?

[macmesser]

I just calibrated my Macbook's (intel dual '09) battery as I was getting a service battery warning. iStat reports 100% charge, 67% battery health. Can I just kep using it this way or should I replace? I mostly use it with power adapter.

Thanks for any help.

 

[GGJstudios]

I just calibrated my Macbook's (intel dual '09) battery as I was getting a service battery warning. iStat reports 100% charge, 67% battery health. Can I just kep using it this way or should I replace? I mostly use it with power adapter.

Thanks for any help.

The "Service Battery" warning comes on when the battery health drops below 80%. Just because the battery drops below 80% health doesn't mean it's not usable. As long as it holds a charge long enough to suit your purposes, you can continue to use it. Also, the built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries in older Apple notebooks.

The link below should answer most, if not all, of your battery/charging questions. If you haven't already done so, I highly recommend you take the time to read it.

Apple Notebook Battery FAQ​

 

[macmesser]

The "Service Battery" warning comes on when the battery health drops below 80%. Just because the battery drops below 80% health doesn't mean it's not usable. As long as it holds a charge long enough to suit your purposes, you can continue to use it. Also, the built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries in older Apple notebooks.

The link below should answer most, if not all, of your battery/charging questions. If you haven't already done so, I highly recommend you take the time to read it.

Apple Notebook Battery FAQ​

Thanks. Will check it out.

 

[vistadude]

You can keep it that way but you might want to replace it if the battery life becomes poor or you plan on keeping that notebook for a long time.