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Car charger: TF701 says "not charging"

Hi folks,
We're getting ready for a cross country trip. 2 kids, two tablets. One is a Samsung Tab 2 that charges via usb connected to a standard 12V-to-USB car charger just fine. The other tablet is an Asus TF701t. When connected to the regular USB cable for it, plugged into the 12V-to USB charger, it says "not charging." So I read up through Google and found the ASUS tabs have special requirements.
I just bought an: Asus Eee Pad Car Charger Power Adapter,36 pin 15V 1.2A Power Adapter Travel Car Charger for ASUS EeePad TF600 TF600T TF810C TF701T (Car Charger)
I plugged it in, and the tab still says "Not Charging."
Now, it IS charging a bit... despite the battery window saying not charging, I see the green timeline indicator that shows charging, and after a few minutes it went from 91% to 92%.
But I'm concerned this will be just a trickle of charging and not stand up to constant use. We've got two days of driving, 8 -10 hours per day, and this tab is my 8 year old's primary entertainment.
Given this is the official car charger for the tab, why won't it show proper charging?
My plan B is that the car does have a built-in 110V outlet. I could plug the wallwart into that (though, I need an extension cord, because the wallwart is too big to fit in the small recess where the 110V line is). I'm a bit worried the wall wart will pull too much juice through the 110V line and cause it to shut down (thermal protection).
Experiences or thoughts that might help me here?
Marc

Yeah sounds like it can't supply the correct voltage. More likely it is supplying 11V and the tab really wants 15V to charge. (Car batteries are 12V so unless it has some sort of transformer in it which is unlikely). So it will be a slower trickle charge.

Compare the car's inverter rating (the 110V outlet) with the input rating on the Asus charger. Mine wants 0.5A at anything from 100 to 240 volts, so if your car outlet is rated 120 watts or better it will do. If you are handy with a soldering iron there is a simple alternative: chop off a female USB cable and splice it into an automotive 12V power plug. Assuming your car's alternator and regulator are healthy (and of course battery) it will put out 14.0-14.5V at cruising speeds, perfect for charging Asus TFs. If your car has a 12V power outlet; many don't come with cig lighters anymore, but most have the same hole somewhere with a rubber plug in it. Word of warning though: make sure the kids don't plug the Samsung (or anything but a TF) into the modded 12V USB port, it will let the magic smoke out. They are only rated for 5V.

Turns out the car charger charged the tablet fine despite the not charging status. We started the trip at 9:30 with 75% charge. Two hours later, with constant game use, the tablet was nearly full. Stayed that way throughout the day's drive.
Thanks all.
Sent from my SGH-M919 using Tapatalk

qi wireless charge

i have a question
i am planning to buy a wireless charge and want to know something
if i buy the wireless charge where do i must look?
input or the output for more faster charging ?
example:
Wireless charging standard: Qi standard
Power: 10W
Wireless distance: 5mm
Input: 5V 2000mA
Output: 5V 1000mA
Frequency: 100-200 kHz
Power transform efficiency:> 75%
or dou have a link for a fastercharger already?
thank you

I have a wireless charger. It doesn't charge fast at all. You need a powerful charger to power the wireless dock. That's the 2000mA you see above.
I use a turbo charger to power my wireless dock. When connected to my phone directly, Ampere reports that it will reach up to 2200mA.
My phone now is at 50% charge and in the wireless dock charging wirelessly at 570mA.
Wireless charging is trickle charging only.
[NG]Owner

I am using several cheap QI-pads from eBay (China)
Use with standard usb-chargers (different types).
Disadvantage of QI-pads is that it's critical how the phone is placed on the pad.
Extra difficult with a Nexus 6. The back isn't flat.
With plastic material of a sleeping mat l've made a 'charging bed' that fits​ my Nexus 6.

I have a wide variety of Qi chargers scattered around the house, car, and office.
They all do an acceptable job of keeping my phone topped up throughout the day. None of them are even close to as fast as the QC 2.0 plug in chargers but that's not a problem for me. Because I can just set my phone down to charge anytime it is almost always fully charged.

Qi pad on my desk at work and night-stand at home. Phone is on it about 6-8 hours at night, and another 2-4 hours during the day. If my phone is below 50%, it will take a few hours to get back to 100%. But it is a great way to start the day at 100% charge without stress on teh USB port.

Wireless charging speed

Could anyone tell me if I'm charging wirelessly at 5W or 15W?
On one hand the notification says 'Fast wireless charging' which I've read generally means 15W.
On the other, my charger, despite being marketed as having fast wireless charging, is only certified for 'Basic Power Profile (5 Watt)'.
(I am using the 2A wall charger included with the phone.)

Install galaxy charge current, that will give you the actual charge in mAh, so you can compare the performance in different charging scenarios you may have

wireless charger very slow

hi guys, i'm from a 8 note and now i'm using sasung's original 8 wireless wireless charger to plow my new 9 notes, but i'm noticing that it's really slow, is it normal? I have the impression that even imposed fast charge does not change anything, do you have any suggestions?

im also using the wireless charger that I received from Samsung in 2018 for the note 8 promotion.
I can confirm that fast wireless charing takes 2 hours + on the note 9 and up to 3 hours when using slow wireless charging.
Also, keep in mind we have a way bigger battery so i am not surprised seeing these charge times compared to the note 8. I know Samsung released a new wireless charger so we might see better charge times on that??

I use the wireless charger I bought for my Note 4 for $12. It charges my phone in 2 hours from 50%, which is about double than using the cord. It doesn't say slow, or fast, just charging.

I use a Samsung wireless charger I had with a kit when I bought my S8+ and it says "Fast charging wireless" I believe. I use it to charge over night though so not sure how long it takes.

I use the ADATA CW0100 charger with Sony UCH10 QC2.0 Charger - the phone says it's fast charging but it takes about 3 hours to go from 11% to ~100% (with a clear case + bus card in between on the back). The interesting issue is which power brick I use. WIth Samsung's Adaptive Fast Charge power brick, I kept getting a charging paused error in the previous firmware, unless I have the phone placed in a very specific position without a case. With the update (N960FXXU2ARI9), it no longer gives me the error even if I charge it with a case, but the charging seems a bit more noisy in comparison to the UCH10 (there's no fans, it sounds like the inductor making a pulsing clicking sound). Will be checking its charging speed.
EDIT: I spoke to soon, it started the charging paused error again after I posted here. If you want to use third-party wireless chargers for fast charging, please use QC2.0/3.0 chargers instead of Samsung's own.

Question Wireless charging 9w

Hi, I have a question.. I bought Samsung wireless charger 9w and I charged the phone completely switched off and the charging time was approximately 4 hours.. Is it normal? Maybe the wireless charging not working in fast mode if the phone is powered of?? Thanks..

9w is really low power to charge a 5000mah battery sooner than that

of course its normal with a 9w charger ... thats damn slow

Another question, is it bad for the battery on the long run?
I usually charge overnight during sleep so I don't mind slow charging just curious about battery life. Thanks

Qi standard allows one to use even lower charging power than that 9W for safer overnight charging. Check the alignment of the charging coils for optimal result.

9W is not fast wireless charging, it is normal; 15W is fast wireless charging.