MacBook Pro 13" Unibody Mid 2012 Hard Drive
Cost Effective Improvement
MacBook Pro 13" Unibody Early 2011 RAM
Slow charging and sudden battery life lossAfter putting off the upgrade for about a year and a half, I finally swapped out the battery in my early 2011 MBP with new st...
Answer to: Slow charging and sudden battery life lossWound up taking my computer to the Apple Store since they had an opening. They will spend quite a bit of time giving you their disclaimer that they won't do any repairs for you since you've installed 3rd party parts into the system - ignore this. The battery replacement is a ridiculously easy job, and you don't want to be paying them to undo a couple screws anyway. Anyhow, they ran a test that confirmed the problem was with the battery. It took maybe five minutes, and the same test also verified that everything else was in good working order (logic board, MagSafe port, charging adapter, etc). I also wound up getting my replacement battery on warranty from iFixit later that day, and the early returns on this new battery are encouraging so far. Lastly, I want to add that I learned it's supposed to take about 4 hours for your MBP to fully charge from empty. The first 0% to 80% is done via "fast charging", and is supposed to take about 2 hours. The last 80% to 100% is done via "trickle charging", and is supposed ...