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Before switch of battery it only worked 4-5 min, we have change battery and loading it works well, but when we take out the electricity cord, it go off?
Before battery switch - it random go off ?
Macbook Pro 13 inch - early 2015
Haven´t heard about this before -
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It appears SMC was not fully cleared as we can still see the original battery info! Note the batteries manufactured date is 2015-03-30 which is just a few months older that the system 2015-10-26
Properly shutdown your system and disconnect all the cords to the system then carefully disconnect the battery. Place the system on its side so you can reach the power button and press and hold it with nothing connected for a good 15 sec's to fully discharge the logic board. Now, plug in the MagSafe charger, the system should spontaneously startup, let it finish booting, then carefully shut down the system fully.
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Hi did all that, but it stay the same, SMC on the way as guide above, but it still belive that battery has not change
@swedboy - Well, I have yet to see this fail, the charge within the logic board is what messes you up. SMC won't clear if it see gets power from either the battery or the residual charge held in the logic board.
So if you still are showing 2015 date within the batteries manufacturing date then you didn't hold the power button long enough or the power button is not working properly.
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@swedboy - Charging is a different issue than reading the batteries values. So lets assume charging is the real issue here (FYI: It doesn't appear to be so in your CoconutBattery snapshots).
Your MagSafe charger puts out power which is attenuated by SMC based on three variables the batteries temp and what it measures from the battery from the micro-controller within the battery as well as the flow rate SMC measures across to resistors via a voltage comparator logic which inputs into your systems SMC and the stored high and low values to alter the MagSafes power level.
We often find knockoff chargers don't work properly and some even damage the voltage comparator logic within the logic board
Its was so often an issue in the older Unibody and Retina systems I pulled this together to help sway people away from them! As well as a very expensive event one of my clients encountered costing them a 3~4 million in damages! And our reaction making sure the systems all had real Apple charger units.
Only use the real Apple unit for your system directly from Apple don't trust what people write on the web and if its not in real Apple packaging walk away! Apple 60W MagSafe 2 Power Adapter (MacBook Pro with 13-inch Retina display)
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What is the color of the MagSafe cords LED Amber or Green?
If you can install this app CoconutBattery take a snapshot of the apps main window and post it here for us to see 在已经存在的问题里加入图片
由 Dan 完成的
Picture up, and the light is green, we also can see that it worked some seconds alone on battery, that problem started before battery switch
由 Sven Olov Dahlgren 完成的
it random goes off whit cord, and goes 2-10 sek on battery, battery is full loaded. it shows amber color in a few seconds and then green
由 Sven Olov Dahlgren 完成的
OK i have done the SMC 10 times or more, but it dosent relese the old battery data??
Installed the new battery who showed about 40-60% and then it loaded upp to 100%
But when we look in the mac after downgrade the mac to el capitain we can se this in the system -power
Coocanut battery do not work on this OS
Translated from swedish:
Battery information:
Model information:
Serial number: C01514309YEF90MA4 <<<< The old battery that we have replaced
Manufacturer: SMP
Device name: bq20z451
Pack Lot Code: 3230
PCB Lot Code: 3230
Firmware Version: 2d31
Hardware audit: 322d
Cell revision: 3036
Charging information:
Remaining charge (mAh): 6492 <<<< not loaded
Fully charged: No.
Loading: No.
Full charge (mAh): 6600
Status information:
Number of cycles: 1
Condition: Normal
Battery installed: Yes
Ampertal (mA): 0
Voltage (mV): 12394
由 Sven Olov Dahlgren 完成的
@swedboy - Over time CoconutBattery has kept up with the newer versions of macOS, as such some OS API's dependent on in the older versions were discontinued by Apple replaced by newer ones which the newest version of CoconutBattery now uses.
You'll need to contact chris (at) coconut-flavour.com to get the older version if you are going the stick with El Capitan. Not sure why you rolled back as the OS is not the issue here.
If you've followed my instructions to the letter, then I think it's time to try a different battery. Clearing SMC only sets a flag state, so its possible the battery data line is not working properly.
由 Dan 完成的
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