Have had it a couple weeks now. Performs very well so far. Holds a charge well. You can't go wrong with the warranty. I would recommend this battery.

I installed this battery into my mac for 1 month when I wrote this review: Before my mac at 100% charge would only keep a charge for 30-40 minutes. Now with the new battery I get close to 5 hours of use before I need to recharge. I've had no issues, everything works normally.One important thing to note is that when you install any new battery into any device is you should calibrate it to your computer. You should look it up online for specific but generally you need to fully charge your to 100%