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User profile for user: shamoono
shamoono Author
User level: Level 1
4 points

Macbook Pro 2013 will not power on after flat battery?

Hi everyone,


I own a Macbook Pro Retina 13" late 2013 model. Recently the charger cable broke and was left without one for a month and the battery on my mac completely drained on sleep. Stayed like that until I bought a second hand 85W charger.


>Plugged in cable - Port shows battery is charging - Mac does not turn on

>Leave it charging - Port shows charging - Mac does not power on

>Leave overnight charging - Fully charged - Mac does not power on

>Tried SMC reset - Correct LED color change on port - Mac does not power on

>Disconnect battery - Power chord connected - Mac does not power on

>Disconnected keyboard cable and batter - Mac does not power on

>Disconnected battery - Power chord connected - SMC reset - Mac does not power on

>Reconnected battery - With power chord on and off - PRAM RESET and SMC Reset - Mac does not power on


Initially I thought issue was battery but it is not as indicator eventually showed green. But I noticed after 4 hours of disconnecting laptop from power the charging amber indicator is on again after full battery. What could create an issue like this when a mac dies on sleep mode and not charged for a month? Residual power? New charger fry logic board?

MacBook Pro (Retina, 13-inch, Late 2013), iOS 11.2.2

Posted on Jan 19, 2018 10:07 AM

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2 replies
User profile for user: y_p_w
y_p_w
User level: Level 6
17,696 points

Jan 19, 2018 10:44 AM in response to shamoono

shamoono wrote:


What could create an issue like this when a mac dies on sleep mode and not charged for a month? Residual power? New charger fry logic board?


Deep discharge. It's generally safe to drain a battery down to "0%" and then charge it. 0% is only a "reference point" and not where it's actually drained completely. However, if you leave it there it can get to the point via self-discharge (typical 1 to 2% each day save a fresh charge where it's about 5% the first day) where it drains to a point where there's either substantial loss of capacity or it's completely dead.


In your case I would have recommended shutting it down (rather than leaving it in sleep mode) and waiting until you got a new power adapter before using it again. However, I have an old polycarbonate MacBook where I've left it plugged in while sleeping for months, but the MagSafe adapter was pulled. It did restore from "save to disk", but it took a while before I could see that the battery was charging. I don't know exactly how long it was in that state, but I suspect it wasn't for several months. It reports normal battery health now.


Apple recommends long-term storage of a device with battery at 50%.


Batteries - Maximizing Performance - Apple


And yeah - I'd have Apple check it out. It might be tough getting an appointment now with the iPhone battery deal.

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Macbook Pro 2013 will not power on after flat battery?

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