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USB car charger dongle supporting "charging AC" mode?

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Cares
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Originally Posted by maximus20895 View Post
This one works without soldering or anything. It charges the EXTENDED batter about 1% every two minutes.



http://www.amazon.com/gp/product/B00...00_i00_details
Anything similar to this for 2 phones? And also does this come with a cable? I'm having issues with the popular Motorola car charger cable being loose.
 
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Anything similar to this for 2 phones? And also does this come with a cable? I'm having issues with the popular Motorola car charger cable being loose.
Nope, no cable. This thing charges quickly! Just order two more. One for the wife and one for my "Tech-Out bag". Yes, I'm a "Battery Drain Prepper".

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Originally Posted by maximus20895 View Post
This one works without soldering or anything. It charges the EXTENDED batter about 1% every two minutes.



http://www.amazon.com/gp/product/B00...00_i00_details
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Originally Posted by Apsalus View Post
I forgot to update this thread. I got the HTC CC C300 dual port charger and it does provide 1A. The model number is 99H10128-00.



If you can live with only one port, the single port HTC charger does AC charging as well. The cheapest that I've seen it is here, as a "T-Mobile myTouch" branded unit. http://www.amazon.com/HTC-T-Mobile-m...d=CYR5AB72ZMIK

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Anything similar to this for 2 phones? And also does this come with a cable? I'm having issues with the popular Motorola car charger cable being loose.
The CC C300 does 1A from both ports. It comes with one cable.
 
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Have any of you tried using Battery Monitor Widget to actually measure your charge rates? I never have issues getting 1A charge with any charger, including the $4 Motorola car charger. Just don't use cheap Chinese junk and you shouldn't have any issues.

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Have any of you tried using Battery Monitor Widget to actually measure your charge rates?
Using what monitoring method? With the default, Auto, charging measurements seem to be close, but discharge measurements are way off. That makes me not trust either to be particularly accurate.
 
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this thread left me with more questions

1) does it show AC/USB based on the >0.5A being provided? or based on the shorted data pins in the USB cable?

2) So, how do you guys measure charging current? i could only find remaning battery voltage on my CM7.1

extra. 3) if you were to attach a multimeter to measure real Amps being draw, how would you do it?
 
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I downloaded battery monitor widget or something, it tells the draw and input.

No idea, but there is an app for that ^
 
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what i'm trying to figure out now is if the phone is relying solely on the shorted USB pin 3-4 instead of acually checking amperage.

I checked those widgets, and didn't put much trust on them.

Anyone knows where in the proc filesystem i can find the input voltage? my googlefu failed.

i wasted some type probing /sys and /proc but the best i could find was in dmesg

"batt: 96%, 4162 mV, 206 mA (210 avg), 28.8 C, 1300 mAh"

which does not tell me anything about the charger

---------- Post added at 01:18 AM ---------- Previous post was at 12:55 AM ----------

i'm testing one board and between pin 2-3 there's 24K ohm.

does that sound right?
 
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yeah, i have to learn a little about eletronics.

just tested several AC chargers, they all have <1 ohm. So i just went ahead and soldered my car charger's pins.

seems that to advertise ipad/iwhatever compatible the manufacturers, besides paying royalties, are forbidden to short the pins on the charger itself.
 
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seems that to advertise ipad/iwhatever compatible the manufacturers, besides paying royalties, are forbidden to short the pins on the charger itself.
Nope. Shorting D+ and D- (actually, it's a 200 Ohm resistance in the current spec) is part of the USB charging specification. Makers of cheap chargers don't do it because they're clueless.

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