Battery full charged capacity rMBP early 2015

[creamz]

Hey guys I was wondering how did the battery full charged capacity drop so low from the original 6851mAh when I first got my MacBook. My usage on battery isn't high. I plug in when I'm inside and use it on battery when access to a wall socket is inconvenient or simply just unavailable. I'm only at my 7th cycle now but my full charge capacity his sitting on only 6484 mAh. Should I be worried? Thanks in advance.

 

[Command]

Batteries are consumable. That's how they work - as they cycle (full charge / depletion) they lose a little of their ability to hold a charge as you may know but they also should not be plugged in constantly, either. There is no win but a battery should not drop below 80% of it's total capacity within a year (warranty) or about 800-1000 cycles. That said, 80% with 100 cycles is actually just as bad. Somewhat like a muscle, a battery needs to be exercised but at a cost of capacity over time. Additionally, the system report will tell you if the battery and charging system is healthy or not. It's generally pretty accurate.

 

[Samuelsan2001]

Hey guys I was wondering how did the battery full charged capacity drop so low from the original 6851mAh when I first got my MacBook. My usage on battery isn't high. I plug in when I'm inside and use it on battery when access to a wall socket is inconvenient or simply just unavailable. I'm only at my 7th cycle now but my full charge capacity his sitting on only 6484 mAh. Should I be worried? Thanks in advance.

No I wouldn't worry, you will notice that this charge amount fluctuates over time and will go both up and down. As long as you are getting decent battery life when unplugged (not any app or estimate from you computer but actual time using it) and this remains steady then I would forget about it and get on with enjoying it.

All your battery questions are most likely answered here.

https://forums.macrumors.com/thread...ry-every-day-good-or-bad.914068/#post-9875442

 

[creamz]

Thanks for the reply and the link. It is very informative.

I just realized one thing. When I first received my rMBP, the battery indicator shows 100% at 6500mAh but it still went on to continue charging until 6851mAh. I wonder what is this all about. As a result, my rMBP stays at 100% for a really long time...like 45 mins lol. No internet, just Office work on Excel.

 

[snaky69]

Stop monitoring your battery unless it is actually giving you trouble. In fact I recommend you delete any monitoring app you have installed. They are both useless (as you have no power over your battery's health) and taking away from your enjoyment of the machine

 

[Samuelsan2001]

Thanks for the reply and the link. It is very informative.

I just realized one thing. When I first received my rMBP, the battery indicator shows 100% at 6500mAh but it still went on to continue charging until 6851mAh. I wonder what is this all about. As a result, my rMBP stays at 100% for a really long time...like 45 mins lol. No internet, just Office work on Excel.

Mine still charges higher than it's supposed max 18 months later, don't worry it sounds like you've got a good one.

 

[T5BRICK]

I just realized one thing. When I first received my rMBP, the battery indicator shows 100% at 6500mAh but it still went on to continue charging until 6851mAh. I wonder what is this all about. As a result, my rMBP stays at 100% for a really long time...like 45 mins lol. No internet, just Office work on Excel.

The percentage indicator is just an estimate, it'll never be accurate. I'd turn it off, charge your rMBP when you can and run it off battery when you need to. Don't worry about it and the battery will last you for a long time.