Hi all. I own a Primo 2011 13" Macbook Pro (A1278 / MC700LL/A), and after upgrading the HDD to SDD this machine still runs like it's new (OS is El Capitan v.10.11.1), much more stable and fast than my all-new Lenovo Windows laptop. My charger however has a faulty wire, so I was thinking about getting an original bulk one, like this https://www.computersalg.dk/i/3305087/apple-magsafe-power-adapter-60w. Bulk just means "not original packaging", right? Anyways, the battery keeps dying on me whilst in standby mode, it just doesn't seem like it's holding power the way it used to, so I was in the process of finding a replacement. BUT! "About this Mac" says the battery is normal, and it's only been through 495 cycles. Would it be dumb to replace the battery then? The capacity is listed to be 4684 mAh, which I guess once were 4800 mAh, and that doesn't seem so bad? Could the disability to hold power standby for more than a couple of days be due to some other problem? On the other hand, this machine is 7 years, so I guess the battery should be kind of worn?