Reviews for Rechargeable Battery - 17-inch MacBook Pro

I'm really surprised by all the bad reviews. My MBP is mid 2010, and I use it every day, and haven't had to replace the battery yet. It doesn't last as long as before, but I still get three or four hours out of it -- with the brightness turned up, and pretty heavy use. I have had a lot of non-apple laptops, and all of them were useless after about a year.

My first battery lasted 4 years. Looked after it only moderately. Have to say a great battery. MacBook Pro is simply the best !!

Batteries DO NOT last forever, regardless of brand, loyalty to brand, or how you worship the moon. Time to replace my current battery. It's 2 years old, and has 807 cycles. And you know what? That's OK. 807 cycles in two years is more than one complete charge and discharge per day. I use my laptop 10-12 to 14 hours per day, all day. I run the battery as much as possible. And when new, I make sure to completely discharge then recharge to 100%. Follow the directions and you will get the expected life. After 700 or 800 cycles - it's time for a new one, no matter the brand. I once purchased an after market battery from a trusted reseller of mac only goods. And you know what? It was worse than the Apple battery. FOLLOW THE DIRECTIONS.

Yes my battery bulged like a pig also but I've had my mac pro 17" for a couple of years now. It would be nice if Apple would include a life clock for these batteries. When I got the MBP 17 I thought I had read all the info but I guess I missed the battery conditioning but I don't think it matters because mine lasted for years, I did notice though that I only started leaving it plugged in for maybe the last year. Now I've read other reviews about the MBP 17 being worthless without the battery, NOT TRUE I've been using mine flawlessly with out the battery for about the last six months now and it runs just fine. The only fault I can think of is while running on AC only you have to be careful not to bump the magnetic AC plug otherwise you get a hard shutdown.

I'm just now purchasing a new battery for my MacBook Pro, after owning if for 6 years. I am thrilled with the computer and the battery longevity. I only charge it when it's needs it, and I don't leave it on overnight or for days on end (like some of my friends do). I think that's why it's lasted so long.

I also spoke with a Apple Store employee and she informed me (because I was worried about the new battery life span) that they come with a 1-year warranty. BUT they will test it to make sure it wasn't abused, which I think is smart.

Got the mac Book Pro 2 yrs ago as a Xmas gift Was working great until battery acted up
after charge only getting 1-1/2.hrs max Have bought new one on line hope to get another 2 yrs it should last if i do the same charge only when it is required and remove battery when working on main power and Drain battery at least once a month

I also had the same problem with battery bulge and sudden shut off. Coincidentally, it started occurring approximately two to three weeks BEFORE my 3 year apple care expired. After reading all the posts above, I went to the apple store prepared for battle. To my surprise, they not only replaced my almost three year old battery free of charge, but also gave me another year of warranty (on the battery only). Way to go Apple!

I have had this battery for almost 2 years, and have used it every day.
I have over 523 full charge cycles on it and am just now starting to notice my battery life degrading. When it was new I would get anywhere from 5.5 to 6 hours out of it. Prior to hitting the 500 cycle mark, I would easily get over 3.5 hours out of it while doing some pretty intensive stuff like games and HD movies. After the 500 cycle mark however, my battery life is dropping to about 1.9 to 2.1 hours. Since most Li-ion batteries are limited to 500 cycles or 3 years, I am rather happy.

Unfortunately Sony shipped some defective batteries to Apple which is why some people are complaining about expanding battery cases, if that happens, you should contact Apple immediately.

For anyone with a negative review on this product I suggest you read the Wikipedia article on Lithium-ion batteries, especially the part about disadvantages, before you declare Apple at fault. The current state of battery technology is disappointing and expensive. Lithium-ion batteries lose about 20% of their capacity per year starting from manufacture, the upshot they are the best weight-to-energy batteries on the market and don't have a memory-effect. Apple has a nice easy to use design that feels solid, and a little LED charge indicator on the bottom. The Apple Genius Bar has replaced defective batteries on the spot.

My MacBook Pro 17" laptop battery started to bulge at 13 months. I took it to the Apple store. They looked at it and said it was defective. Replaced it at NO cost. Time it took-5 minutes. Only problem was I needed to wait 4 hours of charging a new battery to use the laptop again. I don't know if it was free because I had the three year extended warrant or because I am on their Procare program or because of something else, but in any case, it was free.