 Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me. |
Forum Index : Microcontroller and PC projects : HP Tablet thing that has an unhappy battery....
Page 1 of 2   |
|||||
| Author | Message | ||||
Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9350 |
This is not good......     At least it was easy to get apart - the battery had pretty much popped most of the clips holding it together!  This unit WILL NOT power-up now, with the battery removed. Could it be possible that they design a tablet, such that WITHOUT the battery being present, it won't boot? Hmmmmmmm......  Smoke makes things work. When the smoke gets out, it stops! |
||||
Revlac Guru  Joined: 31/12/2016 Location: AustraliaPosts: 1043 |
No boot without battery seems common, might be able to get around that. The battery would have been flat back in 2015.  Cheers Aaron Off The Grid |
||||
| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9350 |
Owwww - very interesting! I could look for a replacement battery - it WAS working OK before I removed the battery, which is pretty amazing really, considering the massive physical distortion going on. Smoke makes things work. When the smoke gets out, it stops! |
||||
| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9350 |
Genuine battery is about NZ$60 plus about NZ$20 in freight, so about NZ$80 or so. Not sure if it is worth it. Maybe I will, maybe I won't..... Smoke makes things work. When the smoke gets out, it stops! |
||||
phil99 Guru Joined: 11/02/2018 Location: AustraliaPosts: 2200 |
I guess you could try several 18650 cells in parallel to see if it runs ok with them instead. If so they would need to be externally mounted. If you don't have any of them simulate a battery with a power supply set to 4.35V, perhaps with a dummy load to absorb any charging current if it needs it own PSU plugged in for the first boot. |
||||
TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6135 |
A big capacitor for a battery then run it from external supply. The poota probably thinks the battery is flat and is waiting for some charge in it before turning on. VK7JH MMedit MMBasic Help |
||||
| phil99 Guru Joined: 11/02/2018 Location: AustraliaPosts: 2200 |
Certainly worth a try, though as the cap will start with 0V it may assume its a failed battery and refuse to charge at all. Maybe a little DC to DC converter set to 4V connected between the power socket and the capacitor may fool it. |
||||
| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9350 |
Excellent ideas, thanks chums!  Smoke makes things work. When the smoke gets out, it stops! |
||||
| robert.rozee Guru Joined: 31/12/2012 Location: New ZealandPosts: 2362 |
try removing the cell(s), but retain the electronics PCB (the BMS). connect an 18650 up to the BMS and see what happens. is it an HP X360? i have a number of HP Stream 11 G3 machines that use 2 cells in the base - underneath the keyboard. i have run these with the battery (including BMS) unplugged without issue. the machine i am typing this on in fact has no battery installed and the charger plug permanently taped in place. i've also experimented with powering the machines with 2 banks of 3x paralleled 18650 cells; with the stream 11 you can replace the cells without the BMS getting unhappy. cheers, rob :-) Edited 2024-12-23 19:14 by robert.rozee |
||||
| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9350 |
HP have cryptic part numbers on their machines, that DON'T match what the bloody thing is actually referred to. Product: P6M73PA#ABG The keyboard is removable, turning it into a tablet, or you can put the keyboard on to turn it into a netbook kind of idea. A search of Mr. Google reveals that this thing is a "HP Pavilion x2 - 10-n103tu" - why the hell the product code and the product name don't match, is beyond me, but HP are notorious for for this kind of thing. The label on the unit mentions that "10-n103tu" is the "M/M", but most people would try(just like me) to find it using the PRODUCT CODE. Nowhere on the product spec label or the machine itself, does it even MENTION it is a "Pavilion X2" - you only find that out, after searching the product code. WHY, HP, WHY?!!!?!?!! Starting to rant now, so I'll stop. It's a quite low-spec thing, so I don't know if it's worth fixing it or not. I suppose it would work fine with something like Puppy Linux on it and a simple terminal software, it could still be useful I guess. It is small and light, so maybe.... Smoke makes things work. When the smoke gets out, it stops! |
||||
| ville56 Senior Member  Joined: 08/06/2022 Location: AustriaPosts: 127 |
a search on Amazon here with "DO02XL" reveals a replacement battery for € 29,12- . Maybe that is also available in NZ. For this price it should be worth it. just saw, shipping is € 14,88 ... so maybe not worth it ... Edited 2024-12-24 15:19 by ville56 73 de OE1HGA, Gerald |
||||
| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9350 |
LOL!!! I think I will get the replacement. A hundred bucks or so, is not THAT much to bring it back to life. Smoke makes things work. When the smoke gets out, it stops! |
||||
| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6135 |
Ebay has them for $65AU posted VK7JH MMedit MMBasic Help |
||||
| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9350 |
I will check. Are they GENUINE though? Merry Christmas!  Smoke makes things work. When the smoke gets out, it stops! |
||||
| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9350 |
I've decided to just order a genuine battery - the genuine HP one. They are not prohibitively expensive. But look what I found on a sticker on the INSIDE of the back of the lid:  This is on the INSIDE of the case! Why the bloody hell couldn't HP put that information on the OUTSIDE of the damn thing!?!??! But as I say, HP are notorious for this, and I can't figure out their logic.  I've censored the ID and SN, but I probably didn't need to - it'd be invalid(expired) by now anyway.... Smoke makes things work. When the smoke gets out, it stops! |
||||
| Revlac Guru Joined: 31/12/2016 Location: AustraliaPosts: 1043 |
The new battery might have the same (perhaps a year or 2 later) manufacture date as the one you are replacing, sort of depends how long that model was used for, this is normal for phone batteries as they keep changing models and design's, and no longer make that model of battery.  Don't know if the seller will tell you the date on the new battery? It may take some time to charge because they are usually flat, not enough charge to boot up, at least this is how its been foe phone batteries, computers have a bit bigger power supply.  Cheers Aaron Off The Grid |
||||
| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9350 |
Good to know - I will leave the charger on it, and monitor it. Smoke makes things work. When the smoke gets out, it stops! |
||||
| ville56 Senior Member Joined: 08/06/2022 Location: AustriaPosts: 127 |
as this is a Li-Ion battery I wouldn't charge a FLAT one again. Flat means for me the voltage across the battery terminals is much less than about 2.7 volts. If things turn out good, only the capacity is lowered, if going bad the battery may gas out and the package pops or it may even burn. I've just killed 2 16850 cells by deep discharge. They charge, get a bit warmer than normal but have only half their capacity. I will dispose them off, just to make sure they will not do any harm... i'm not anxious, but the Li-Ions are unpredictable beasts if offended once. Just as a word of warning 73 de OE1HGA, Gerald |
||||
| Revlac Guru Joined: 31/12/2016 Location: AustraliaPosts: 1043 |
Li-Ion 18650 cells do behave a little different compared to pouch cells, having charged and used a few thousand of them I learned a thing or two, cylindrical cells are packed very tight compared to pouch cells that will expand easily if there is any problem, good to check the voltage before installing the battery, depends how long its been sitting on the shelf. There certainly don't like been left completely flat or reversed. Hopefully they send a good battery. Cheers Aaron Off The Grid |
||||
| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9350 |
I have no idea as to the date of the replacement. As it is a genuine HP replacement, I expect to find a sticker on it saying when it was made. I'll keep the forums updated, once I receive the battery. Smoke makes things work. When the smoke gets out, it stops! |
||||
| Page 1 of 2 |
|||||
 Print this page |
