Well, if you want power on-the-go then 4700mAH could be your answer otherwise bring your AC charger along
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I am asking if keeping original dash charger in power outlet all time is safe.
Absolutely. Technically I think all AC adapters draw a tiny amount of power even if there is no device attached. The dash charge is no more dangerous than any other AC adapter.
viktorino said:
I am asking if keeping original dash charger in power outlet all time is safe.
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Yeah, it's safe I have mine Plugged-In (with power) for a week now no issues. I do this all time.
Ok, thanks guys, I wasn´t sure how exactly dash technology work, if it is different from ordinary AC adapter. Small power drain is not problem of course.
As above really its not my tab so i know nothing apart from it stopped charging. USB port was damaged so i replaced the port and battery with genuine samsung.
I have a Choetech micro usb lead that displays current Amps and Voltage. When plugged in its at 5.06v 0.00a. When i hold the power button the voltage goes to 4.97v and 0.16a so its drawing power just wont turn on!
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.
Although I have two official razer branded chargers which are fine I'm trying to reduce the amount in carrying around and for day to day usage the phones 4000mah battery has not dropped below 15% yet.
I'm planning a trip soon so wanting to cut down on what I am carrying however USB C is now my main standard so you would assume carrying a single razer wall plug with usb is enough.
Currently using
Razer Phone - USBC
Razer Headphones - USB To Micro USB
Razer Nabu - USB to non standard
A RavPower power bank 26800mah with USBC and power delivery.
My Nintendo Switch
The standard razer plug works to charge all the above however the non USBC devices will need to be in the power bank so wanted something as good but with a standard usb port too. Which is why I saw the below and wondered if it was any good to charge the phone as it supports outputs the phone charger doesn't. I don't know much about this so wanted to check it wouldn't damage my phone.
https://www.amazon.co.uk/Charger-RA...tDescription_secondary_view_div_1515491595656
it will not charge as quickly because its a different quick charge tech than Qualcomm's QC 4+ thats on the Razer. if you want to have both ports then its fine. otherwise invest in a cheap usb-c to usb adapter and use existing plugs:
https://www.amazon.co.uk/Adapter-Te...&qid=1515714700&sr=1-11&keywords=usb+c+to+usb
mikey_sk said:
it will not charge as quickly because its a different quick charge tech than Qualcomm's QC 4+ thats on the Razer. if you want to have both ports then its fine. otherwise invest in a cheap usb-c to usb adapter and use existing plugs:
https://www.amazon.co.uk/Adapter-Te...&qid=1515714700&sr=1-11&keywords=usb+c+to+usb
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Thanks for letting m know i wont bother getting it then as the Razer charger charges everything i carry and the non usbc stuff will just have to be powered by my power bank.
Sorry if mods didnt see this related to the phone but i was trying to figure out the phones power options with some reason to why i didnt just want to use the supplied power block.
I'm having a weird issue that I can't wrap my head around so thought I'd ask in case anyone here knows:
I bought an ASUS ZenPower 10000 Quick Charge 3.0 (https://www.asus.com/Accessories/Power-Banks/ASUS-Power-Bank/ZenPower-10000-Quick-Charge-3-0/) battery bank and I'm not sure why but I can't seem to get it to charge the phone at over 12W.
I tried connecting it via a HAMA USB-A-to-USB-C 2.0 cable (rated at 3A) in the fast charge port - I get it show breathing color, indicating 12W or lower charging, with the phone saying "Fast charging". I tried to use the included USB-A-to-MicroUSB cable along with a MicroUSB-to-USB-C tip adapter with the same result.
After some digging I keep seeing that the S21 FE supports USB Power Delivery 3.0 but no mention on Qualcomm Quick Charge 3.0 so I'm starting to guess this might be an issue?
Any thoughts or tips would be greatly apprecaited.
Use a Samsung 25w brick/cable. Inexpensive, long lived and it makes battery troubleshooting much easier.
blackhawk said:
Use a Samsung 25w brick/cable. Inexpensive, long lived and it makes battery troubleshooting much easier.
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This is a battery bank, the Samsung-charger is not useful for troubleshooting.
I was able to get an answer to the question though so leaving it here in case anyone needs it - apparently the battery switches charging modes after connection - leaving the phone to charge a few seconds and then checking the light indicator using the button showed that it DOES use the "over 12W" (presumably 18W) charging mode.
So apparently using a cheap USB 2.0 cable, or a microB-to-C adapter tip does not influence fast charging, at least for this battery bank.
CrisR82 said:
This is a battery bank, the Samsung-charger is not useful for troubleshooting.
I was able to get an answer to the question though so leaving it here in case anyone needs it - apparently the battery switches charging modes after connection - leaving the phone to charge a few seconds and then checking the light indicator using the button showed that it DOES use the "over 12W" (presumably 18W) charging mode.
So apparently using a cheap USB 2.0 cable, or a microB-to-C adapter tip does not influence fast charging, at least for this battery bank.
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The cable must support the protocol, be fully functional or the power controller will default to snail charge.
Lol, Samsung learned their lessons the hard way with the N7.
Yes it is supported. My xiaomi powerbank uses QC3.0 18W to charge.
Your asus should support it too. Get a new cable and clean your ports.
You have the snapdragon version right? I do, and I'm not sure about that exynos variant as that is inferior and might not support it as QC is qualcomm's