Chosen Solution
Hi!
This is the second time I’ve replaced my battery with an ifixit battery and this is the second time this issue has came up. After replacing the battery and running the calibration cycle, I would use my laptop on its battery and somewhere around 70%-60% battery level, the battery level would just shoot down to 7%. Initially on the first time around with replacing the battery, I just figured they sent me a faulty battery, but didn’t have time to buy another one and change it out, so i lived with the power adapter. I finally had a chance to replace it to a new battery, but the same thing just happened. Now, Im hoping to find some answers from you all if I have another faulty battery or some other insight on what it might can be. Appreciate whatever insight provided! UPDATE
Here’s a photo with the coconut battery app. In the screenshot under the “BATTERY (last 12 hours)” you can see the instant drop in battery level. UPDATE #2 at 50% charge
at 100% charge
UPDATE #3 Screenshot charging from 0% to 50%
I don’t see any issue with the battery or the charger. They are both working properly. The drop off you caught here tells me SMC still has your older values.
I think your issue comes down to SMC not having the Min-Max values stored. So you may need to run the calibration process again or your SMC logic on the main logic board may need repairs.
It is a battery fault, and I am pretty sure about it. Battery is made up by combining many small cells. Each cell has its own power and capacity. All the cells are connected in a pattern inside the battery. As an example if your laptop battery has six cells and all the cells are fully charge. When you would start using the sixth cell first drain, then after fifth and fourth. In case your third or next cells are faulty, your battery will suddenly drain to 10% or 0%. Seems like some cells of your laptop battery are dead, and it’s dropping from 60% to 7% instantly.
