MBP won't turn on after battery dies

[SkyBell]

I purchased an early 2011 MBP a few months ago, and recently it's been giving me some trouble - if I allow the battery to die, it will not turn back on after I plug it in and charge it up. SMC reset does nothing, nor does holding the power button - however, what I've discovered is, if I open it up and disconnect the battery for a few seconds, then plug it back in, it still won't turn on - until I plug it back in, then it comes right on with the first press of the power button.

What could be causing this? Bad battery? I try not to let it die now, but I've had to do this whole process three times now (and lost a screw somewhere in the midst of it all) and I'd really like not to have to do it again. Any ideas?

 

[Audit13]

Disconnect the charger, disconnect the battery, connect the charger and wait. If the machine turns on by itself, probably a battery problem.

How many cycles on the battery? How is its health?

 

[tmt]

Buy a new battery. I have an early 2011 MBP and it´s a great machine still today.

 

[Fishrrman]

Posts 2 and 3 above are "the answer".

Check the battery's number of cycles.
Chances are, the number is quite high.
The battery's getting old -- time for a replacement.

Go to ifixit.com to see what's involved.
The process IS NOT difficult, but you do need THE RIGHT TOOLS.
ifixit sells what you need.

Personally, I -would not- buy a "cheapo" battery from ebay.
There is a lot of variation of quality between replacements.
Expect to spend around $100 for the battery and tools.

Other "really cheap fix" -- DON'T let the battery die (to begin with).

 

[SkyBell]

Here's a screenshot from CoconutBattery

 

[Fishrrman]

Re the screenshot above:
That battery looks fine -- 99% of design capacity.

But... be careful to get it back on charge before it dies.

Perhaps the previous owner changed it before selling it.

 

[Audit13]

Is the Macbook a 13"? The battery in my early 2011 13" has a design capacity of 5770 mAh. There are 1,030 cycles and full charge capacity is down to 4,287 mAh but battery is good. These values are from coconut battery.

 

[SkyBell]

Yeah, it's a 13". It appears that indeed the battery was changed before I purchased the machine - perhaps it's just not playing nice with it anymore? I just wonder why it has suddenly decided to start doing this, when there were no issues at all with the battery dying the first few months I had it.

 

[Audit13]

Batteries can be unpredictable and it does appear that the Macbook doesn't have the original battery.

 

[tmt]

Yeah, it's a 13". It appears that indeed the battery was changed before I purchased the machine - perhaps it's just not playing nice with it anymore? I just wonder why it has suddenly decided to start doing this, when there were no issues at all with the battery dying the first few months I had it.

I changed my battery a year and a half ago, bought from eBay, and my capacity is the same as Audit13 has and working swell.
The battery is obviously changed but not to the same specs. Don´t know if this is the problem, but it can´t be helping.

 

[MacInTO]

You've got a crappy after market battery in your MBP. The manufacture date of the battery is 2016-12-10.

Your solution is probably not to let the battery totally discharge or get a different battery.