iPad (charging to 1%) various models - GSM-Forum

MonkeyRiver · 09-28-2019, 15:39

I have encountered this problem on may different models of iPad.

It will charge the battery when in "dead battery mode" and it is not booted up. But once it boots up it quits charging the battery. Current drops to zero and the battery charging stops. The display shows battery at 1% not charging.

I have seen this several times and have not figured it out. I have crawled over the schematics Air 2 and Mini 2 but don't understand the process for turning on the charging. I see the signal out of the PMIC to turn it on. But don't know why it is missing.

If anyone has figured this out please msg me or post on this thread.

tommy00 · 09-30-2019, 16:16

the same proplem help

timvandenboo · 10-03-2019, 08:29

If already saw a lot of the from ipad air 1/2 mini 4 with charging up to 1% and then stops. This isnt tristar or dock flex. Sometimes the stay working if 2 amp ipad charger is used.

Most of the time the PMIC is dead and needs to be replaced. I just trow them in the parts box since here the value of these ipads is too low now.

MonkeyRiver · 10-03-2019, 21:19

I figured it out. It works for multiple models. It's not the PMIC!
Now the hard part of finding components for the iPad 6th Gen!

This is a PITA signature fail across multiple models. I figured it out by reverse engineering the 6th gen using iPad air schematics.

appfix · 07-16-2020, 07:58

I've seen plenty of these. Keeps charging really good with a drained battery, but as soon as it boots up it stops and stays on 1%. Never tristar, dock or battery.

What do you mean with PITA signature fail? Do you know how to fix that? Tried searching both schematics and the web for PITA but just find a lot about bread

Does replacing PMIC help?

mcmihai003 · 08-07-2020, 11:17

Once happened to me on mini1.
It was a missing resistor near the battery connector that i accidentally ripped off during disassembly.

fasttechjlm · 08-12-2020, 13:30

I've fixed many of those with same problem. its always pmic. reball or replace, it will fix your problem. temporary solution is to turn it of manually while its on and connected to charger it'll charge battery in off state.

09-28-2019, 15:39	#1 (permalink)
MonkeyRiver Major Poster Join Date: Jan 2019 Location: Kansas City Posts: 42 Member: 2891996 Status: Offline Thanks Meter: 6	iPad (charging to 1%) various models I have encountered this problem on may different models of iPad. It will charge the battery when in "dead battery mode" and it is not booted up. But once it boots up it quits charging the battery. Current drops to zero and the battery charging stops. The display shows battery at 1% not charging. I have seen this several times and have not figured it out. I have crawled over the schematics Air 2 and Mini 2 but don't understand the process for turning on the charging. I see the signal out of the PMIC to turn it on. But don't know why it is missing. If anyone has figured this out please msg me or post on this thread.

09-30-2019, 16:16	#2 (permalink)
tommy00 Freak Poster Join Date: Dec 2003 Location: italia Age: 51 Posts: 374 Member: 45660 Status: Offline Thanks Meter: 4	the same proplem help

10-03-2019, 08:29	#3 (permalink)
timvandenboo Freak Poster Join Date: May 2013 Location: Netherlands Posts: 376 Member: 1939450 Status: Offline Thanks Meter: 165	If already saw a lot of the from ipad air 1/2 mini 4 with charging up to 1% and then stops. This isnt tristar or dock flex. Sometimes the stay working if 2 amp ipad charger is used. Most of the time the PMIC is dead and needs to be replaced. I just trow them in the parts box since here the value of these ipads is too low now.

10-03-2019, 21:19	#4 (permalink)
MonkeyRiver Major Poster Join Date: Jan 2019 Location: Kansas City Posts: 42 Member: 2891996 Status: Offline Thanks Meter: 6	I figured it out. It works for multiple models. It's not the PMIC! Now the hard part of finding components for the iPad 6th Gen! This is a PITA signature fail across multiple models. I figured it out by reverse engineering the 6th gen using iPad air schematics.

07-16-2020, 07:58	#5 (permalink)
appfix Junior Member Join Date: Jul 2013 Location: Sweden Posts: 12 Member: 1990685 Status: Offline Thanks Meter: 2	I've seen plenty of these. Keeps charging really good with a drained battery, but as soon as it boots up it stops and stays on 1%. Never tristar, dock or battery. What do you mean with PITA signature fail? Do you know how to fix that? Tried searching both schematics and the web for PITA but just find a lot about bread Does replacing PMIC help?

08-07-2020, 11:17	#6 (permalink)
mcmihai003 Freak Poster Join Date: Oct 2011 Posts: 206 Member: 1675922 Status: Offline Thanks Meter: 61	Once happened to me on mini1. It was a missing resistor near the battery connector that i accidentally ripped off during disassembly.

08-12-2020, 13:30	#7 (permalink)
fasttechjlm Freak Poster Join Date: Apr 2006 Location: Denmark Age: 41 Posts: 280 Member: 268415 Status: Offline Thanks Meter: 57	I've fixed many of those with same problem. its always pmic. reball or replace, it will fix your problem. temporary solution is to turn it of manually while its on and connected to charger it'll charge battery in off state.