- CrackBerry Abuser
- 199 Posts
Quickest Stack-Charge for Dead Playbook
*Dead for 7 days
*No LED indications
*No flashing Red/Greenish Orange LEDs
*Dead that PC cannot connect with playbook
*Press Start Button
*As you press the start button, quickly insert then pull-out USB stock Playbook Charger off the USB port (less then a second with each start button press + insert/pull-out)
*Playbooks USB port can be damaged over-time, so wiggle the USB stock Charger while performing the Start Button + Insert/Pull-out method.
***I did this at least 5-7 times***
*Perform steps continuously until Red LED light turns on for 8-10 seconds and then the green/orange flashing LED indicator 5x.
*Once this happens, leave playbook alone for at least 2-3 hrs.
***While waiting, make sure you try and press the start button once again to see if the playbook is finally receiving the good 'ol electro-juices-s-s-s by observing the same Red LED light turning on for 8-10 seconds then green/orange flashing LED indicator 5x. This means you've finally done-did-it.***
*After 2-3 hrs of waiting, un-plug the USB stock Charger then perform Hard Reset (Start+ Vol Up/Down) and wait for about 10-15 seconds.
***Warning, if you dont wait 2-3 hrs before pulling the USB stock Charger, you will be stuck back to a dead Playbook once again and going to have to start all over.***
*Wait for the Red LED to turn back on and the RED DEAD BATTERY ICON with the BOLT should pop up on the screen.
*The oscillating green lights should initiate showing signs of your playbook finally drankin' sum juices LOL!
*Make sure you now wait for another 2-3 hrs until the playbook starts up by its own along with the low battery sound indicator.
*From here, you have the option to leave the playbook on while it charges or turn it off and having a higher rate of charge.
- CrackBerry Abuser
- 199 Posts
To those new users that runs into a dead playbook, then I would more than advise unplugging thru the USB at the wall to indeed avoiding any damages on the port.
- CrackBerry Newbie
05-31-13, 08:22 AM #6
- 1 Posts
i connected my playbook to the laptop and then to the original charger, it stayed red for about 10 seconds then the lighening bolt appereared then faded and the red light come on again then the lightening bolt then two tellow flashes and two red flashes, what do i do, leave it to charge? how long for?
- 05-31-13, 09:08 AM #7
Here's some more reading and ideas. You might skip to the end and check out the Knowledge base article
Locked, bricked Stack Charge Charging
Don't keep trying if you get the Red light/5 Yellows... you'll soon drag the battery down past where you can start it again. Leave it off, plug it in and let it charge (with at least a 1.8A charger). Once you get the flashing (once every few seconds) green light, you can power it up - on the charger. If you do drag it down below the red flash/5 yellows, plug it in for 1 minute, unplug (at the wall) for a second or so, plug it back in and repeat for 20-30 minutes. You'll eventually get the red/yellows and then leave it plugged in (and off) until you get the flashing green. It's a PITA but the PlayBook has a very conservative charging algorithm when the battery is below 2.67 Volts to prevent explosions (I'm guessing). I've never been unable to start one with that method.
The PlayBook OS currently shuts down at 3.5 volts. When the battery gets below 2.67V it won't show power lights or even try to start because there isn't enough juice to even power the processor to run the code on the BIOS. The BIOS is software hard coded on a chip within the PlayBook that tells it how to load the PlayBook OS and is coded such that it only recognizes signed PlayBook boot images (which is why it is so hard to root and that nobody has been able to get one to boot Android or WebOS. The BIOS software also contains some charging algorithms for when the OS is not running - ie device is powered off but plugged into a charging source. This code ONLY runs when the battery is above 2.67 volts because the processor can't run below that.
The root of the problem is that this design issue prevents the device from accepting any charge longer than 60 seconds when the battery is too low to run the charging algorithms on the BIOS or on the OS (one runs before the device is powered on and one runs afterwards). RIM did this because Lithium Ion batteries have a nasty habit of catching fire if not charged properly so they wanted to ensure that the processor could be in control of the charging. Makes perfect sense and they probably thought they were avoiding situations like where early Li Ion batteries on laptops were catching on fire. The problem is they were a bit too aggressive in dealing with the problem at design stage. If the battery is below 2.67Volts their protective algorithms can't run but you also can't put enough charge into the battery to charge it! Hence all the reports of people having success with stack charging.
Unfortunately there are a lot of wrong ways to do this floating around out there and getting repeated everyone someone posts a new thread on the issue. It really should be made a sticky. What is the right way?
1) ONLY use a source that provides 1.7Amps or more of charge. The original charger provides this. The rapid chargers provide a lot more. Your phone charger only provides a fraction of this. Anything less is going to take forever to charge the battery above 2.67 volts and may not have enough juice to charge the battery AT ALL once the processor starts to run above 2.67Volts or even worse once the OS starts to run above 3.5Volts. Forget about using your computer to charge it when the OS isn't running as the computer looks for the hardware to identify itself and won't put out a full charge current unless the device indicates it can accept. Once the OS is running, you'd often CAN get enough power from the USB on the computer but that is because the OS has signaled it is OK for the computer to send it. When the OS/BIOS isn't running, the PlayBook won't take much/any charge from a computer. The rapid chargers are best as they quickly charge but more importantly do not use the (too) flimsy USB port. A lot of problems are caused by this port getting wobbly over time and the device not getting a charge at all. Everyone should have a rapid charger.
2) Until you get your device WELL above the 3.5Volts that let's the PlayBook boot, do NOT try to start it. Every attempt drags the battery down some more and that attempt sucks much more charge from the battery than you can put in in those 60 seconds before the hardware shuts down the charging. How can you tell where your battery is? Well if you are getting no lights on the playbook on your first charging attempt you are below 2.67volts. If lights go on and then it doesn't start the OS it is below 3.5Volts. If it loads the OS and then dies it is just above 3.5Volts. If the device loads the OS it is somewhere below 5.0Volts. Depending upon where you start (how low the battery is) various techniques work best. They are: REAL stack charging (plug in for 60 seconds, unplug, plug in for 60 seconds, repeat until the processor starts accepting charging (the big battery symbol on the screen). Again, DO NOT try to turn the device on until then. You are just working against yourself and it will take much longer. You should get the charging symbol within 20-45 minutes of repeated REAL stack charging. Forget you ever heard of plugging in for 2 mins and then off for 2 mins and similar as those 2 mins of off time are COMPLETELY worthless. I have put a multimeter on the PlayBook in this state and it NEVER takes more than a minute of charge when under 2.67volts but will accept another minute of charge after a short (1-2 second) disconnection. Just do it right.
3) Once you see that charging screen leave it plugged in to the charger (stop stack charging) for at least an hour before you try to start the PlayBook. If you don't you may end up in a situation where the attempt to start drags that battery back down below 2.67V and you have start stack charging again. Be patient, you are almost there!
4) Fully charge your Playbook after this to ensure your PlayBook gets back to 100%.
Unfortunately, there isn't a lot RIM can do about this now. It's a hardware design issue. I'd be interested in knowing if the fixed it with the 4G versions. I don't think I've ever seen that complaint with one of those but I've "fixed" both of mine a few times (the kids keep trying to power them on after letting them shut down on low battery despite me saying time RUN not walk and put it on a rapid charger when ever it hits the flashing red battery signal (9%). I've also helped many friends and people on the web and NOBODY who has followed the instructions has failed to get their PlayBook to charge.
I'm convinced this fault is the reason so many PlayBooks are returned to the stores and through RMA. RIM has been very good about this but it should never have happened. Happy Charging!
The battery is likely below 2.65 volts. That happens if the PlayBook has sat for a while. Plug your charger into the playbook (make sure it's the stock charger and not a computer or other charger as you need to pump in lots of amps - more than 1.7amps - the more the better). The rapid charger is even better as it can go to 5 amps.
LEAVE the charger plugged into your PlayBook. Unplug it from the wall (to save the fragile micro-USB port) every minute for a few seconds and plug back in. You'll see lots of references on the web to plug in for 2 minutes and unplug for 2 minutes. Ignore those. I took the PlayBook apart and put a multimeter on mine when it was doing this. If the battery is below 2.65 volts, the PlayBook charging circuit charges for about 1 minute and then shuts down. NO AMOUNT of continued charging makes any difference. As soon as you unplug it (at the wall) and power it back up, it will take charge again for another 45-60 seconds. Repeat.
Keep doing that for as long as it takes to get the screen to show the charging display. If it is just below 2.65volts, it will take somewhere between 20-45 minutes as the battery only takes a little bit of charge each cycle and you need to get that voltage up over 2.65 volts (at which point it will show the charging display and take a full charge). It may take more... but keep at it. Every time you plug it in for 60 seconds, you are adding a bit more power to the battery.
DO NOT try to power the device on until the device has a full charge. You will just risk getting it into a situation where it can't fully boot before it drags the charge down below 2.65 volts again and you'll have to start all over.
This works... and saves you from having to jump start it like I did the first time I got mine into this situation.
KB27705-BlackBerry PlayBook battery power charge, discharge characteristics, and guidance on extending battery life
- CrackBerry User
07-03-13, 12:40 AM #8
- 10 Posts
i bought a playbook last year and was okay with it. But 6 days back, i've discharged it completely while using. as a result, it hasn't get charged since then.i didn't know about this known problem then. after that, i've opened the back case and directly charged the battery via external charging system procedure and then have been able to fully recharged to update the latest version of os. but unfortunately, the problem persisted. i've connected it to the wall charger for 4-5 hours but no increase in the battery level.
then i've found your article and began to start this procedure of stack charging.but with time, my battery level's decreasing.. right now it's showing 9%. but i'm afraid i'm continuing stack charging. i've been doing that for a while. (almost 2hours now) but level isn't rising in fact.
so, what can i do? plz help me...
would you plz help me...?
- 07-03-13, 08:09 AM #9
So starting today I am apparently in the same situation (with a Playbook that isn't even three months, I might add), but I never did let the charge of the device slip to anything below 40%, so I don't know if the methods described here apply to my situation. Fact is I am stuck with a power indicator stuck at 0% with no indication whatsoever that it is charging again. Help would be appreciated.
BTW: Is there a way to find out if my reseller actually sold me a new Playbook and not some older refurbished one?
- CrackBerry Genius of Geniuses
07-03-13, 08:27 AM #10
- 5,251 Posts
- 07-03-13, 09:14 AM #14
It works while still plugged into the charger? The following might turn it off and not allow it to turn back on. Then it might need Stack Charging.
Press and HOLD the power button for 20-30 seconds and see if that does anything.
Move onto Stack Charging? Or call Support - do you need their numbers?
- 07-03-13, 09:25 AM #15
2 questions: would stack charging require me to purchase an addìtional charger (other than the one that came with the Playbook)? And is this kind of behavior the beginning of the end for the battery or just some fluke accident that doesn't say anything about its ultimate life expectancy?
I'll return for the numbers if needed...
- 07-03-13, 10:35 AM #16
It can take 20-30 tries and some folks have gone on for half an hour. It could be a fluke so first get it going again and then see what happens. As suggested, Battery Guru can show info and can show the charging curve and total charge cycles.
- CrackBerry Newbie
07-12-13, 09:05 AM #17
- 8 Posts
I have tried all the solutions,stack charging my playbook..
After several cycles of stack charging.. Red led glows once, followed by empty battery icon with a bolt sign, the icon stays there for 5 to 10 seconds which is followed by a single green/yellow led glow which goes out abruptly and then nothing happens for 40 to 50 seconds.
Then playbook tries to boot up and abruptly shuts down in middle of boot process.
I have tried stack charging for hours stopping just before playbook boots but never did i get past the above mentioned cycle
Any help will be highly appreciated.
- CrackBerry Newbie
09-19-13, 11:27 PM #18
- 1 Posts
On - NOT attempting to start
Above explanation looks great and makes sense but "on starting the device moment the charge level increases above 2.7" - Even if I do not start it seems device is auto starting moment it reaches above the required level but unfortunately only to shut down again mid way ( probably when it drains out again due to power spent on booting up).
How can I STOP / PREVENT device from auto booting itself after seeing certain charge level due to my hard earned charging (repeated stack charging)
- 09-20-13, 04:37 AM #19
Upon pressing the power button of my PB it shows a red light for about 5 seconds followed by a flash of yellow light 5 times and after that nothing happens
Please advise me according to the given situation of my PB
P.S I did 'try' to read this thread but almost everything went over my head that is why I'm requesting for an Individual guide
Any positive response would be highly appreciated
- 09-20-13, 09:02 AM #20
When doing this procedure, do NOT keep checking the voltage or turning ON the pb - that only depletes the low charge.
Plug in the usb. I still suggest UNPLUGGING at the wall to avoid stress on the port. Plug in for 5 or so seconds, UNplug, repeat up to half and hour or more.
You can also try just plugging it in overnight. Again, don't keep testing it.
Just read the stuff above slowly. There's background info but instructions are in there.
- 09-20-13, 02:20 PM #21
The purpose of stack charging is to get enough power into the battery to allow full charging. The PB restricts charge rate below 3.53 volts so it is a slow process. You need to keep the PB from starting up prematurely because you lose charge in starting up prematurely.
Don't despair but the process may take quite a while. If this doesn't succeed sometimes just leaving it plugged in for several days works.
Sent from my Nexus 7 using CB Forums mobile app
- 09-22-13, 02:18 PM #22
Today I sat down to stack charge my PB but before doing so just to be sure that my PB is still showing the red and 5 yellow lights I turned it on but there were no lights so I thought that the battery has drained further anyhow I proceeded with stack charging i.e charging the PB for roughly 60 seconds and then unpluggin for about a second or two and then plugging it back again for another 60 seconds.
So I did this for about an hour but when i tried to turn the PB to see if it worked and is there any LED indication now there wasn't any. I tried to wake it up by first pressing and holding the power button for around 20 seconds and then again pressing and holding the power button along with volume up and down buttons (excluding the play/pause button) but nothing worked.
- 09-23-13, 12:31 AM #23
l assume you are trying to use the Blackberry wall charger that comes with the Playbook and connects to the USB port,
1. Inspect the USB port on the Playbook and make sure it is in good shape. If you can check the charge pins to see if you can detect the voltage on the battery.
2. Test your charger on another device if you can to be sure the charger and wire are in working order. Alternatively use another charger such as one on a BB phone or from another tablet such as the HP touchpad. The data lines on the BB PB charger are connected together. Or can use the usb cable to connect with a computer.
3. Turn it off and connect to a charging source and hope.
4. Leave it connected for a few days not trying to turn on but feeling the back to see if there is any warmth. Shouldn't get hot but if it does would disconnect. After a few days try it to see if there are any flashes.
5. If all this fails and you are technically inclined you can try taking the PB apart and checking connections. For this see iFixit or other sites for instructions.
Another Blackberry information source is the Tolkit.
- 09-23-13, 10:09 AM #24
- 09-23-13, 05:03 PM #25
The PB has a one year warranty to the original purchaser. It also has 90 free Tech support. I do not know how Rim deals with "quasi-tech support v. warranty"
Canada Toll Free: 1-877-644-8405
United States Toll Free: 1-877-644-8410
Puerto Rico Toll Free: 1-855-651-4936
Email: email@example.com (this route generally does not work and a call is necessary)
(UK Support) 0800 096 2805
Playbook French Support
Smartphones BlackBerry Z10 - Tous les Téléphones Portables BlackBerry - FR - France
Phone : 0800 914 533 (within 90 days from activation)
BlackBerry® Customer Support Center
RIM (Brasil Support toll free number): 0800-022-3161
South Africa: 0800988892
United Kingdom: 08000962805
Phone-Numbers of BlackBerry PLAYBOOK- Helpdesks...
Germany: 0800 1816530 (Gebührenfrei)
North-America: 1 877 255 2377 (Toll Free)
UK: 0808 100 7466 (Toll Free UK only)
Outside UK: +44 1753 558400
Worldwide: 1 519 888 6181
(BTW: Helpdesk for BlackBerry devices -except PlayBook- for Germany: