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Procesador Intel Core i7 de cuatro núcleos a 2,2 GHz (Turbo Boost de hasta 3,4 GHz) o 2,5 GHz (Turbo Boost de hasta 3,7 GHz) con 6 MB de caché L3 compartida.

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MBP thinks it's charging but it's not

I found my MBP shut down this morning. I tried turning it on, but only got the dead battery symbol on the display. I plugged in the charger and the green light lit up. Pressed the power button, and got the dead battery symbol with a lighting bolt underneath. Left it to charge for a while. When I came back the symbol was still a red empty battery with bolt. The charger was stone cold.

I took the MBP to the store. They plugged in their charger and we got the exact same result. Green light on the charger. Not amber.

So it seems the charging system is fried and I need a new computer.

Is it possible to bypass the charge circuit and hook up my bench power supply to the battery, fooling the MBP into thinking the battery is full? Is there a fuse for the battery that I can check? I just need to power up the MBP long enough to retrieve my data.

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I found these two useful videos:

How to power a Macbook using a DC power supply!

Repairing Macbook with no power from charger.

I'm feeling a little more hopeful now.

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I got a call back from the store who did some additional diagnostics, and pulled the machine apart. Apparently the battery is swelling up, two sensors have failed, and there are some other issues with the mainboard. He did say he was able to make it boot up though. I'm going to pick it up tomorrow.

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I got the computer back today and it’s back up and running.

The tech unplugged the battery connector, plugged it back in, and it started working again.

I don’t trust the machine though so I’ll still get a new one. I’ll throw this thing in the closet for emergency use.

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Theres two ways you could get around things:

As long as the rest of the logic board is good you could just get a replacement battery and plug it in by passing your systems battery by just unplugging yours and plugging in temporally the replacement (returning it paying the restocking fee). But that assumes the logic board is still working enough to get your data.

The second way is getting a OWC case which is designed to hold your Apple SSD. Then you have everything available! And you have a spare drive as well. This in my mind is the easiest way! OWC Envoy Pro

As far as getting a bench power supply other than hooking it up at the MagSafe port it can get complicated depending on what happened with the charging logic and/or power rails.

Frankly, there are people who have the skills to fix your logic board! If your system is still in good shape mechanically then it might be worth fixing.

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The OWC case is $130. That’s the cost of an entire 1TB portable SSD. Besides, I’d rather if I could actually boot up the OS and use the apps to get the data and settings I need.

Board repair STARTS at $300. That’s a lot of money to sink into a machine that was designed poorly, had power issues from the beginning, and eats chargers every few months. It has already had every component replaced. I don’t trust it. For the issue it has, even Louis R doesn’t have a 100% fix.

At the very least, I should be able to charge up the lithium cells manually with my bench supply. The only issue I foresee is the charging logic not knowing how it got charged and getting confused about the state of charge. But there must be some kind of reset procedure for that in the case of replacing batteries.

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The replacement battery idea is a gamble. What if it's barely charged on arrival?

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I have a few friends which have this series. They don't have the level of issues you appear to be having. I've replaced the batteries on two of them once each but given the heavy use 4 years is about all I would expect a lighter use person could get 5 to 6 years.

REAL Apple MagSafe chargers as far as I know don't have a high failure rate. I do see people who kill the cords as they don't treat them well and I often see people going cheap with the knockoff chargers which just like cheap gas can damage things and have a high failure rate! I see lots of issues with these chargers!

Don't Replace Your MacBook Charger With a Cheap Knockoff

OEM MagSafe Chargers vs Cheap Imposters: Teardown for Truth

Lacking safety features, cheap MacBook chargers create big sparks

FAKE Magsafe MacBook Chargers on eBay - Watch before buying a Mac Charger

As far as the stability of the 2014 15" MacBook Pro's - The systems I see are often ones which have been pushed to the edge doing photo or video editing, I've even burnt out a few mac's pushing them too hard my self.

The issue is the software improvements has exceeded the hardwares ability to support it! And of course we are using these better tools on older systems. Thats not the hardwares failure its our over expectations (use) on older gear.

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There is a variation to my first answer which depends on access to a second MacBook which supports the same battery. Carefully removing your battery from your system and then use the other Mac as a surrogate to charge the battery.

You need to understand Lithium Ion batteries can't be charged straight up as the charge rate needs to be balanced by the batteries level of charge and temp. Its quite easy to damage them and they can fail quickly which can be dangerous!

Using a Mac systems charging logic as a surrogate is the safest way. Or, you use the MagSafe charger port via a bench power supply which is not likely to work here given what you've told us.

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This MBP is on it's (at least) 4th genuine Apple charger. Given that they run hot enough to cook my breakfast, let alone hold in my hand without burns, this is not surprising. And I know I'm not the only one. I am well aware that the cords are made like sh*t, don't have proper strain relief and break from ordinary use. I learned this from my previous 2006 MBP. Of course they don't make the DC end detachable, because then they couldn't sell you a new $100 charger. For this reason, I take extra care with my chargers and even add my own strain relief.

5 to 6 years is terrible. My mother's iMac still runs after 14 or 15 years.

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