Related
:?: Hello. I was wondering if anybody has had same problem as i have.
I work on my xdaIIs a fair bit away from home and as a result i need to recharge it every now and then. I have a usb charger cable that i use to charge it using other computers and also via a usb car charger pluggy thingy sorry cant remember name :lol:
The problem i have is that while i am charging my xdaIIs using this method the battery power starts running DOWN as if the power is being drained!!! The device is definately telling me its being recharged.
Please help... I have no idea what is going on???!!!
THANKYOU in advance. 8) :?
Depends what you are using to charge I had the same problem with a mini sync cable I bought sync'd fine but didnt charge but that because it was designed for an XDA not an XDA2 bought a new one from boxwave and its fine.
But certainly if your device is sufficiently drained it will be pulling more power that your PC's USB slot will be willing to give it so you could be running into that.
Novice Gadget Boy said:
The problem i have is that while i am charging my xdaIIs using this method the battery power starts running DOWN as if the power is being drained!!! The device is definately telling me its being recharged.
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I would guess that the charger doesn't supply sufficient current to actually charge the unit. I say this, because I have seen exactly the same thing (= orange light on and the battery power level decreasing fast) when I built my custom charger for XDAII. XDAII is very "picky" and needs a lot of power to charge and the "USB car charger", as you described it, probably can't supply enough.
Thanks for the reply guys.
It used to work when i first bought it but now doesnt.
Any ideas on what i could purchase that WOULD work??
I have had a similiar problem with a similiar charging setup, but mine charges fine as long as the battery level does not fall too low, if it gets below about 30% then it seems to decharge instead of charge... its really strange.
Cigarrete adaptor charger Draining mine too..
I had a Ipaq 2210 installed in the handle bars of my bike with a Holux BT GPS, recently after breaking 2 of them( IPAQS) I've replaced with a XDA IIs, I had a cigarrete adaptor for the IPAQs and another for powering the speakers... as now i can't use the speakers (due to the horrible 2.5 jack)I've modified the supplied connector for charging without the craddle to fit the connector for the speakers...
I realized from time to time the XDA turned it self off... and last travel it just died with the orange led on and battery 0%....
However first time I've used it was a 700km trip (paris - switzerland) and that time had no pbm (once or twice it turned off but that was all)
I've noticed that the supplied wall power adaptor is a 2Amp one... which looks like enourmous to me... but i tought that cigarrete adaptors were not amperage limited (but for your battery and generator/alternator)
One think I havent tried is to cut the Ipaq's one and fit the connector there... as the Ipaq uses the same wall power thing perhaps the cigarrete adaptor will be the same too....
Please any advice for me ??
I would also like to mod the suppplied connector into a usb stand alone sync cable (pls advise on it too....)
Also i would like to fit an Ipaq IR led onto the XDA to use it as remote for my digital rebel camera.... (advice again?)
Thanks in advance
N
I would like to get a car charger that works with the O2 Exec when I am running navigational programs such as Garmin Que and TomTom. I have tried more than 5 chargers but no luck thus far.
If anyone has any to recommend, do let me know. I am located in Singapore.
i use my car charger from my gps that is the Holux 236, the only think i have to do so that it starts charging is turn it off on the button and the led will change to orange, i have tried one other charger that has a usb plug and it worked fine ! So has long as it has a usb plug you'll be alright and if you do not find one look for the Motorola car plugs that it will probably work on Uni since it has a mini usb plug
The charger from M3000 works fine with my Uni
And the Motorola Mini-USB chargers doesn't work...
Hi, I found that this issue is connected with proper usb cable not with charger itself (usb mini have 5 connector but in some cables only 4 are connected and in some other cables all 5 are connected and so are the difference). I was also trying many chargers and no luck. But I ve tryied charger with other cable and suddenly all chargers start charging my jasjar.
Anyway, the bad thing is it stops whitout any reason so now charging jasjar in my car is a real mystery for me.
regards,
Piotr
Be careful if buying one with a double USB output - I bought a few different models hoping to power both Exec and the Holux GPSlim-236, but all failed. They would power the Exec, but as soon as the Holux was connected, it would always cause the Exec to continually reboot - fortunately "soft". Make sure the supplier will take them back if it doesn't work.
Try a car charger with a USB socket on the end that takes a separate Sync/Charge cable.
The problem is, the exec is very power hungry, especially when the batt is dead !! you need a high current charger at least 1A (1 amp) the charger used with the blackberry (I forget which model) is suitable as is the genuine exec charger obviously.
use O2 Atom car charge
O2 Atom car charge will work with O2 Exec as well as A/C charger from Atom
Exec/SPV car charger...
Got an o2 branded one today for the Exec/Mini - works like a charm (Charges my SPV and runs Tt at the same time) but cost me £14.99 for the privelage!
could you post a link to the website? I would love to purchase one but am currently located in Singapore and so far all the charges don't seem to work for me.
vapor said:
I would like to get a car charger that works with the O2 Exec when I am running navigational programs such as Garmin Que and TomTom. I have tried more than 5 chargers but no luck thus far.
If anyone has any to recommend, do let me know. I am located in Singapore.
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Click to collapse
I have one brand new that Imate sent me for a delayed process when i got my JASJAR repaired.Never used it either.Let me know if you are interested.Regards
southernint3l said:
I have one brand new that Imate sent me for a delayed process when i got my JASJAR repaired.Never used it either.Let me know if you are interested.Regards
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I would love it but can you confirm that it would charge the phone while running navigational programs?
You can email me at [email protected] to discuss the price and shipping.
vapor said:
I would love it but can you confirm that it would charge the phone while running navigational programs?
You can email me at [email protected] to discuss the price and shipping.
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Yes it does.I have TOM TOM navigation and IGO that i use.I have a 3800 Li-Ion battery.I plugged it in to see if it worked and it does.Has a green light and all.I will email you tmw.As i have just got done with a long day of data entry for work.FYI
Whatever you are doing with the phone,it charges while its plugged in.
southernint3l said:
Yes it does.I have TOM TOM navigation and IGO that i use.I have a 3800 Li-Ion battery.I plugged it in to see if it worked and it does.Has a green light and all.I will email you tmw.As i have just got done with a long day of data entry for work.FYI
Whatever you are doing with the phone,it charges while its plugged in.
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sounds great. I have gotten your email and replied. Hope we can come to a decision soon and I can get my hands on the charger.
if anyone else has any for sale, do let me know as well.
Car Charger for UNI - how to make working
Hi All!
I've also tryed 2 diferent car chargers and 1 USB Pluggable Car Charger (some noname chineese 3-rd party) with 3 diferent cables, and one 3-rd party AC Power Charger. They ALL worked strange.
I can confirm that to make them all work I should:
1. Switch off the Universal;
2. Plug in the chgrer in to Universal;
3. Wait until the Red Light on.
Now I may turn the Universal On, and see the "Charging" battery status.
The reason and how to fix:
As you may see I used different adapters. All they have from 0.5 to 1.0A output circuit. But, the USB ports I used with my laptops have only 0.5A output and always start charging the Universal.
So, I dont think the output power is the reason.
The most likely - it is the "5-th pin" issue, which is mentioned above here. Can somebody provide information about power connection for the Universal?
It seems the solution is about to interconnect/short circuit 2 wires in the car adapter' cable to make the Universal charging in a usual way with any of my (your) "non-working" car adapters.
Also, I've noticed, that in a case the battery level around 30% and I plug in the "non working adapter" and no red light and system not is in the "Charging" state -- the battery is charging anyway!
Also, let me remind you about another issue that the Universal have: Active Sync (older versions) would not sync (USB Device not recognized error) if you plug in the Universal if the power is On.
To workaround that you have to switch off the Universal, plug the cable and after that you could successfully sync. The same symptoms? May be the same reason?
I would advice anybody not to mess with interconnections in USB, I mean stop soldering and checking because its shortest road to bricking Your precious jasjar. It can be done with proper cable and you have to find the right one ;-)
Secondly - I found that jasjar Rom is also responsible for charging issues. As I stated earlier I finally found good usb cable but later on I lost an ability to charge Uni. in the car. After upgrading to the Aku3.2 rom it start to charge immidiatelly. Same charger and cable - one time it charge, second time it dont. So additionally to cable theres something with soft with preventing Uni. from charging.
man why is it such a complicated issue to get the universal to charge? and it seems that this charging problem only happens to the universal and not any other device, am i right?
nabuhonodozor said:
I would advice anybody not to mess with interconnections in USB, I mean stop soldering and checking because its shortest road to bricking Your precious jasjar. It can be done with proper cable and you have to find the right one ;-)
Secondly - I found that jasjar Rom is also responsible for charging issues. As I stated earlier I finally found good usb cable but later on I lost an ability to charge Uni. in the car. After upgrading to the Aku3.2 rom it start to charge immidiatelly. Same charger and cable - one time it charge, second time it dont. So additionally to cable theres something with soft with preventing Uni. from charging.
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YESSS! I Have upgraded to on of that Aku3.2 recently! May be it is the reason! But, my original Power adapter still charges my Uni so does the USB conndction to the laptop...
To ALL: Could you please confirm that you can use third-party adapters with the older ROMs?
hopefully we can get some updates soon.
Are all chargers alike?
Are all chargers the same? I would think that the USB power rating would be the same. So, I should be able to charge the Jasjar using a charger for a Motorola RAZR (if I weren't so afraid of blowing up the Jasjar)
I have been trying to get hold of a working car charger for the Universal that would charge the phone while it is running navigational programs but to no avail.
If anyone has any for sale, do let me know.
vapor said:
I have been trying to get hold of a working car charger for the Universal that would charge the phone while it is running navigational programs but to no avail.
If anyone has any for sale, do let me know.
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The car charger costs barely $5 in china and on ebay. It can be purchased from anywhere. I use the car charger that i got with my Holux GPS reciever. I have a lot of car chargers. This is how they work. You plug in your USB cord into the car charger and the car charger goes into the cigarette lighter in the car. I am not selling mine. Go get one from ebay. Just search on ebay for USB car charger.
nuclear said:
The car charger costs barely $5 in china and on ebay. It can be purchased from anywhere. I use the car charger that i got with my Holux GPS reciever. I have a lot of car chargers. This is how they work. You plug in your USB cord into the car charger and the car charger goes into the cigarette lighter in the car. I am not selling mine. Go get one from ebay. Just search on ebay for USB car charger.
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I have done so and the thing, its either I'm having bad luck with them or there's something wrong with my phone. The best I ever got was that it charged the phone when it was OFF but when I switched it on, the charge disappears.
I tried using my GPS's car charger and another USB Car Charger as well but they both do not work and I do not know why.
I have spent so much searching for the right car charger which is why I am so desperate now just to get a second hand one that would definitely work.
vapor said:
I have done so and the thing, its either I'm having bad luck with them or there's something wrong with my phone. The best I ever got was that it charged the phone when it was OFF but when I switched it on, the charge disappears.
I tried using my GPS's car charger and another USB Car Charger as well but they both do not work and I do not know why.
I have spent so much searching for the right car charger which is why I am so desperate now just to get a second hand one that would definitely work.
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I think you'll find this has been discussed here before, try searching.
FYI, I used the charger from my Holux GPS, and whilst it works, it dosn't charge whilst using TomTom. If you try a long trip with this setup, you will find that the battery charge drops. This charger is good only for topping up the Uni whilst not in use. I use the genuine iMate charger and this does run TT and charge at the same time. You need the higher amperage of the iMate charger.
Mav
mavrik64 said:
I think you'll find this has been discussed here before, try searching.
FYI, I used the charger from my Holux GPS, and whilst it works, it dosn't charge whilst using TomTom. If you try a long trip with this setup, you will find that the battery charge drops. This charger is good only for topping up the Uni whilst not in use. I use the genuine iMate charger and this does run TT and charge at the same time. You need the higher amperage of the iMate charger.
Mav
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Nope, my car charger works fine in charging the Universal while in use and turned off. It just charges a bit slower while in use and thats quite an obious reason.
Only thing to consider is how much the output levels are of the car charger.
Thanks for your input guys
I have done my research on the car chargers and from my understanding, the only reason could be the shorting of pins 4 and 5, or something along those lines. Other than that, I have tried out various models of chargers and they do not work.
For those who say you need a higher output, I have tried those rated at 1000mAh which is that charger output for the wall unit. This charger connects to the USB cable yet even when I tried a couple of types of USB cables, it still did not charge the phone.
I also used a lower output of 850mAh and it worked fine with the cables tested abouve, so it shows the cable had no problem. But it could only charge the Universal when the phone was turned off. When switched on, the phone does not even charge, not even in the least bit and I am not sure why. Surely 850mAh is more than enough to get it charging while on the navigational (TomTom) programs because when I connect my Universal to my laptop to charge, I am still able to run TomTom and that charge is only rated at 500mAh.
Thus you can see why I am so frustrated with all these charges. If any of you are able to point me in the direction of getting an original chrager online, I would be more than grateful for your help and guidance. I also wouldn't mind buying a third-party charger as long as it works perfectly with the phone when running nagivational programs.
This is the one i have. works brilliantly, charges universal and BT GPS reciever and lets me use my copilot navigation software.
http://www.easydevices.co.uk/sp/searchbox13/products.asp?partno=MTCUSJASJR
http://www.mdapro.co.uk/shop/xcart/T-Mobile-MDA-PRO-Handsfree-Custom-Car-Kit-with-speaker-pr-36.html
vapor said:
Thanks for your input guys
<snip>
I also used a lower output of 850mAh and it worked fine with the cables tested abouve, so it shows the cable had no problem. But it could only charge the Universal when the phone was turned off. When switched on, the phone does not even charge, not even in the least bit and I am not sure why. .
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Click to collapse
Well, I can only guess the 1000mAh you tried may have been defective???
My car charger is the iMate genuine car charger. This rated at 1000mAh and works great. It charges and runs TT6 no problem. (well, that was untill it packed up the other night so I'm sending back under warranty) But it did work great.
All the best
Mav
Poundland have a USB car adapter that works perfectly with your USB lead to charge the Exec - works fine on mine!
mavrik64 said:
Well, I can only guess the 1000mAh you tried may have been defective???
My car charger is the iMate genuine car charger. This rated at 1000mAh and works great. It charges and runs TT6 no problem. (well, that was untill it packed up the other night so I'm sending back under warranty) But it did work great.
All the best
Mav
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Click to collapse
I thought that could be the case but it charges my GPSr fine so had to strike that one out.
wassa said:
This is the one i have. works brilliantly, charges universal and BT GPS reciever and lets me use my copilot navigation software.
http://www.easydevices.co.uk/sp/searchbox13/products.asp?partno=MTCUSJASJR
http://www.mdapro.co.uk/shop/xcart/T-Mobile-MDA-PRO-Handsfree-Custom-Car-Kit-with-speaker-pr-36.html
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Click to collapse
Hi Wassa you se co pilot - so do i - so please can you tell me what onthe easy devices what you chose for the correct cable that will owrk with the bluetooth gps unit.
cheers mate - thanks for your help.
lr
re: car charging problems
just one thing to ask: are you a smoker?
I only say this because i use a usb car charger and it only charges faster than it drains if you are careful to blow/clean all the fag ash out of the socket in the car to get a good connection. Otherwise the charging led sometimes comes on but cant supply enough power to charge quicker than my universal drains its battery
mickey_jaw said:
just one thing to ask: are you a smoker?
I only say this because i use a usb car charger and it only charges faster than it drains if you are careful to blow/clean all the fag ash out of the socket in the car to get a good connection. Otherwise the charging led sometimes comes on but cant supply enough power to charge quicker than my universal drains its battery
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Click to collapse
nah I do not smoke so I do not see why it should be happening.
mickey_jaw said:
just one thing to ask: are you a smoker?
I only say this because i use a usb car charger and it only charges faster than it drains if you are careful to blow/clean all the fag ash out of the socket in the car to get a good connection. Otherwise the charging led sometimes comes on but cant supply enough power to charge quicker than my universal drains its battery
Click to expand...
Click to collapse
I never get ash in there. Its impossible to get ash in there unless you really want it there. You are supposed to use the knob and not stick your cig in there. lol
I have used a Belkin one, one that I bought for an iPod that has a standard USB socket you can plug any cable into, and a cheap ebay one.
They all work, BUT.. you have to plug them in when the device is off. Once the charge light comes on, you can turn it on, and it will charge, although slowly.
If you plug it in while the device is on, it will not start charging.
I don't know why this is, but considering it's the same on all 3 chargers, and I have seen people complaining about this on the Universal a few times, I think it's just the way things are.
AlanJC said:
I have used a Belkin one, one that I bought for an iPod that has a standard USB socket you can plug any cable into, and a cheap ebay one.
They all work, BUT.. you have to plug them in when the device is off. Once the charge light comes on, you can turn it on, and it will charge, although slowly.
If you plug it in while the device is on, it will not start charging.
I don't know why this is, but considering it's the same on all 3 chargers, and I have seen people complaining about this on the Universal a few times, I think it's just the way things are.
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Click to collapse
Yup because at first i was wondering too why my device isnt charging. Actually the charge light on my GPS came on quicker than the Universal.lol... i had to wait for a few moments and kept trying till the universal began charging. So yeah you gotta wait with the universal shut off.
I have not bothered reading all the replies but the problem with most car chargers is the AMPS, the voltage is right @ 5 volts but the amps is usually 0.5. Ideally the universal needs 1 or 2 amps, the new tomtom standalone units use 2 Amp USB car chargers and are a direct fit for our universals !!! isnt that convenient.
I don't have a charger as such but I use - strangely enough - a sony psp usb cord that goes through a USB cigarette adapter picked up from a poundshop here in UK ( a shop that sells lots of cheap gadgetry - for the non british of you )that also has a connector that is exactly what is needed for my fortuna bluetooth . it works fine . I realise that it does not recharge the phone but keeps it charged . I've not tried the usb to usb mini through the usb lighter adapter though . I guess that the trick its to have a charged universal before you leave on a trip .
I found I was having trouble charging my Universal with a USB adaptor in the car. The "charging" light would only come in if the phone was off, and while it would stay on when the phone turned on, it would not actually be charging and the damned thing would eventually run out of charge (I drive lots).
I eventually realised that if I turned the screen brightness down to it's lowest illumination whilst charging it worked fine. Obviously not much power comes out of the socket...
Now my battery has packed up due to another issue, but turn the screen down and it should be fine.
Voltage Regulator 5v / 2a /
I have read with interest all the comments and solution here and thought it might help to add mine what I have made and fitted to all my vehicles is a mini USB power supply, simply cut the pc plug from a mini USB lead and add one UA 78S05
VOLTAGE REGULATOR 5V / 2A /
http://www.donberg.ie/descript/u/ua78s05.htm
Connect the input leg to 12 v dc bolt the regulator to a GOOD earth/heat sink (car body) and off you go up to 2 amps @5v BUT DO TEST WITH VOLT METER BEFORE CONNECTING PPC
Hi there everyone,
I have been trying to get my Nexus 7 2013 installed into my car seamlessly without problems since December 2015. I have Timur's Kernel v4 (6.0.1) running on it, and it was working flawlessly.
However, I decided that the no battery mod needed to be done as I just could not leave that battery inside a hot car - way too risky.
So, I did the Kevdav no battery mod - with success.
However, once the battery connection was receiving 5v via a usb car charger the OTG cable connected to the tablet's mini usb port would not wake/suspend the tablet properly. It would wake it up, but once it was awake the little battery icon at the top would forever show that it was 'charging' and once power was cut to the otg y cable / mini usb, it would not suspend (would still show as charging).
I did research, and bought a Drok DC-DC step down converter. I lowered the voltage to the battery mod connection to 3.7v (and tested up to 4.7v) and this alleviated the problem of suspend/wake. I think since the original battery gave out less voltage then the otg/charging connection, this needed to be replicated in order for the otg to work.
However, I now have a new problem that I cannot seem to fix. This problem only seems to happen in the car and does not occur when testing it in the house using normal wall chargers.
For clarity, this is how everything is wired up in the car.
Nexus 7 battery mod side of things:
Nexus 7 battery terminals > 22awg usb cable > drok dc dc step down power supply (this board has a female usb port for output) set at 3.7v (tested up to 4.7v) > input is connected to car's constant 12v connected directly to battery on a fused wire.
Nexus 7 mini usb port side of things:
Nexus 7 mini usb port > usb otg y cable > mini usb cable > 2.4a usb car cig adapter hardwired to car's switched 12v accessory wire.
The link to the drok dc dc step down is this - https://www.amazon.co.uk/dp/B01FDBY66Y/ref=twister_B01GO268W6?_encoding=UTF8&psc=1
I turn on acc ignition to send power to the otg connection. It'll power up. However, if left in standby overnight the tablet won't power up. If I physically press the tablet's power button it'll wake up, show the wake up animation, and react as normal (including any subsequent power downs). However, if I don't press the power button and I turn off the ign again, an icon on my car's instrument cluster will be faintly illuminated - this is odd behaviour and should be completely out. When this is the case, if I get out and try to lock the car the remote central locking doesn't work.
This light will go out if I physically disconnect the otg y cable from the tablet, and low and behold the remote central locking works.
I'm no expert on electronics and such, but it seems to me that power may be flooding back into the OTG connection from the no battery mod power?
Does this make sense? Sorry for the long question, but I was wondering if anyone had any experience with troubleshooting or any advice? I've this one problem and then I'm set but I just can't seem to figure anything out and need someone's advice who is in the know rather than take wild stabs in the dark using my own logic because if I do the latter, not only will I waste money on needless components but I'll more than likely break something. I've read stuff about diodes or something in order to regulate power flow but I'm not even sure I'm using the correct terminology here so if anyone can tell me I'm onto something here or I'm talking complete nonsense then anything is appreciated!
I did search these forums and google but I really cannot find anything that is similar to my problem.
Thanks for any input guys, whether it be any tips on what I'm missing or what I need to change (software or hardware, electrical, etc) - it's all very much appreciated.
Antony
Edit: so sorry I think I posted this is the wrong n7 2013 sub section. I can't delete the post but if a mod could please kindly move it to the relevant forum I'd appreciate it. Thanks!
antc101 said:
it seems to me that power may be flooding back into the OTG connection from the no battery mod power?
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Click to collapse
Hi, indeed, and your "2.4a usb car cig adapter hardwired to car's switched 12v accessory wire" requires a small mod to prevent the power feedback. It needs an extra 1A+ diode connected directly to 12V input. You could modify the adapter's PCB or simply replace the fuse's internal wire with a diode where its cathode goes to the spring and its anode to 12V input. Or just place the diode somewhere along the adapter's hardwire. $0.16 1N4001 is good enough ([email protected] is OK for [email protected]).
Not sure if thread is still active but I also have the same symptom with tablet turning off completely overnight. I am running constant 12v to 3.7v dc to dc on battery input and car adapter 12v to 5v on microusb cable in. Tablet will work fine with on and off but after car is shutdown for the night it will not turn on in the morning. It shows me battery charge icon only. I dont have diode installed either. Not sure if thats the cause. Anyone know why it would completly shutdown overnight?
Neo2020Marz said:
Not sure if thread is still active but I also have the same symptom with tablet turning off completely overnight. I am running constant 12v to 3.7v dc to dc on battery input and car adapter 12v to 5v on microusb cable in. Tablet will work fine with on and off but after car is shutdown for the night it will not turn on in the morning. It shows me battery charge icon only. I dont have diode installed either. Not sure if thats the cause. Anyone know why it would completly shutdown overnight?
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Click to collapse
Hi there,
Been a while since I posted on this thread but just wanted to update on what I have done so far.
Since my last post, I don't have any issues. I placed a diode as mentioned above on the +12v for the accessory power. This seemed to have fixed any back flow of power.
Concerning the power off over night, I'm pretty sure this was something to do with Timur's kernel. I forever had issues with that thing - eg, suspect and wake issues, accessories connected to my usb hub..
I switched to a stock version of android 6.0.1 - MOB30X if memory serves... and installed Elemental X version 5.16. No issues with this setup what so ever.
Huh.
I run my Nexus 7 on my car with the battery, mounted just above the dashboard, with direct sunlight exposition and no UV film on the windshield. It's been a whole year without issues, thank God.
https://i.imgur.com/cPNhDDc.jpg
I live in the Northeast of Brazil, where's 30C to 40C through the year. Sometimes I come up to the car and the tablet shut off due to the heat.
Battery still lasts wonders and there's no signs of damage.. yet.
Is it really adamant to remove the battery, or is it just a precautionary measure?
GTMoraes said:
Huh.
I run my Nexus 7 on my car with the battery, mounted just above the dashboard, with direct sunlight exposition and no UV film on the windshield. It's been a whole year without issues, thank God.
https://i.imgur.com/cPNhDDc.jpg
I live in the Northeast of Brazil, where's 30C to 40C through the year. Sometimes I come up to the car and the tablet shut off due to the heat.
Battery still lasts wonders and there's no signs of damage.. yet.
Is it really adamant to remove the battery, or is it just a precautionary measure?
Click to expand...
Click to collapse
You better have more luck.
My nexus was put under the dash and was fine for around 3 years. And it became expanded in just 2 days, separating the screen and the case. So I have urgently remove the battery.
A few years ago, I installed a Verizon Samsung Tab 2 in the dash of my Cadillac. I have this tied into the sound system and use it mostly for streaming music and google maps. I had it set up so that the power (cigarette adapter) would shut off whenever the car turned off. Then I used the Tasker app to detect when the tablet was not getting power and put the tablet into Airplane mode, turn the screen off, and pause any music. This would cause it to conserve enough power that it could last a long time until I started the car again. (I cannot reach the tablet's power button once it's installed in the dash). This worked fine for years. However, this tablet was so slow due to no OS updates ever that I couldn't stand it any longer.
I recently decided to upgrade to the Verizon Asus Zenpad Z8. The issue I am now having is that no matter what I do, the tablet dies when the car is sitting. I cannot keep up with its power demands. Tasker does not have the options available to put it into airplane mode. But I have gone into the developer mode menu and set it so that the screen goes off whenever the tablet is not receiving power and it goes into super saving mode during the night. It still dies. It cannot get enough power from the cigarette adaptor to charge it fast enough to recharge what it has lost when it was parked. I have upgraded to the fastest cigarette charger I could find (3A). The battery life barely moves while the car is on, it charges soooo slowly. But the battery drains very quickly when off. This means that every time I get in the car, the tablet is off and I have to pop the panels off the dash to turn it back on.
I recently tried to use a small power inverter (powered from the cigarette adapter). This caused a massive feedback loop that was unbearable (and not fixed by an inline noise filter). I then tried a true sin wave inverter, same result. Although this did solve the power problem, it charged fast enough that there would be enough battery life that the car could sit overnight and not completely die.
I had to go back to the cig adapter. This tablet is thus far, un-rootable. That limits my options with shuttings things down and limits the features available in Tasker.
If I switch the cig adapter to power the tablet all the time, then I don't have a way to tell the tablet when to shut the screen down (so that people walking by don't see a tablet in my car and break in). I'd like some way for the tablet to know when the car is off so that it can shut things down. The easiest way to do that was by making the cig lighter turn off when the car turns off.
If anyone has any other ideas, I'm open to about anything at this point. This is getting really frustrating. Thanks.
I bought this tablet because my whole family has USB-C devices. No more stupid micro USB what an abortion that connector was. At any rate at first we used USB-A to USB-C adapter cables with USB-A charging devices. I noticed right away that most of my chargers would overheat quickly or simply charge quite slowly...the charger could not keep up with the demand if you were trying to stream video to the phone or whatever. Then I bought Google Pixel phones for me and my wife and noticed that the supplied charger has a USB-C port on it and the supplied charging cable is USB-C to USB-C. These Google supplied chargers would completely charge a dead pixel phone in 20 minutes. After reviewing the USB-C standard on Wikipedia I noticed a much higher ampacity available using USB-C to USB-C devices. So for my car I bought an LM317T integrated circuit and with a resistor and a heat sink I cobbled a little 3.5 amp 5v charging port in my dash. You could also use an LM7805 if you wanted and insert a small value resistor on the ground reference if you really want the extra .5 volts. Make sure and attach the ic to a small heat sink with heatsink compound. You will need to solder your female port to a female USB-C and use a USB-C to USB-C cable as the USB-A connector on the Asus supplied cable cannot pass enough current.
ninasmith said:
I recently decided to upgrade to the Verizon Asus Zenpad Z8. The issue I am now having is that no matter what I do, the tablet dies when the car is sitting. I cannot keep up with its power demands. Tasker does not have the options available to put it into airplane mode. But I have gone into the developer mode menu and set it so that the screen goes off whenever the tablet is not receiving power and it goes into super saving mode during the night. It still dies. It cannot get enough power from the cigarette adaptor to charge it fast enough to recharge what it has lost when it was parked. I have upgraded to the fastest cigarette charger I could find (3A). The battery life barely moves while the car is on, it charges soooo slowly. But the battery drains very quickly when off. This means that every time I get in the car, the tablet is off and I have to pop the panels off the dash to turn it back on.
I had to go back to the cig adapter. This tablet is thus far, un-rootable. That limits my options with shuttings things down and limits the features available in Tasker.
If I switch the cig adapter to power the tablet all the time, then I don't have a way to tell the tablet when to shut the screen down (so that people walking by don't see a tablet in my car and break in). I'd like some way for the tablet to know when the car is off so that it can shut things down. The easiest way to do that was by making the cig lighter turn off when the car turns off.
If anyone has any other ideas, I'm open to about anything at this point. This is getting really frustrating. Thanks.
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Here's something you can try:
Use a different signal to trigger sleep mode, like WiFI. You could use a cheap 3G router and have the tablet connect to it via WiFi. When you exit the car take the router with you = no WiFi = tablet goes to sleep.