![]() ![]() the two outside pins appear to be shorted together internally the pins are Gnd/V/Gnd where V appears to be greater than 10 volts for charging beyond 50 mA When you say that one of the pins went to a chip in the charger, would that just have been the positive output of the regulator supply that went to the middle connector? A measurement of the resistance between the two outside pins gave zero ohms, at the most 0.1 ohms. Also it did not matter which of the outside pins I used for the ground. It maxed out at 50 mA at a voltage of about 10 volts. I then reversed the connection and did get a current. The first thing I noticed is that by applying the positive voltage to either end conductor drew essentially zero current. So with your information, I got a current limited power supply, limited the current to 50 mA and applied a varying voltage to it. I was surprised at the 12 V since the USB charger is only 5V. I'm happy with the chargers as they are for now (aside from known issues) so I'm not going to get out my scope to dig deeper for now. These things suggest that it's not a simple 12V/ground/12V situation, but rather than one of the pins has some form of data on it, superimposed on the power "signal", and that it may be more than trivial to reverse engineer any of this. I had pointed out, however, that one of those pins was connected internally to a chip in the charger, whereas the other was not, and we've also noted that reversing the connector will lead to it showing the lightning bolt symbol onscreen yet not actually charging all the time (for those with defective chargers where one of the three pins is slightly lower than the others). There are old threads where we identified which pin was which, purely in a voltage sense. Measuring on the PlayBook would, I hope, not show you much of anything. I am going to complain about those two things.There certainly are measurable voltages on them, if you're measuring on the charger. The galaxy S5 is probably their best because it was battery removable. I don't care if it is for water resistant. Now they are coming out with non-removable batteries. Batteries suck still and many years of cellphones and still can't get it right. It just makes no sense that they claim the battery life as much as they do and not get even close to it. I mostly listen to my mp3 music but one time of 2 hours of listening takes 20% of the battery. I get maxed with as much settings changed to 2 and half days standby and few hours talk time. Seriously, mine a ZTE Citrine is a 1650 mAh and it does not last as the claim of 9 hours talk time and 168 hours standby. If they fixed those two things, then the smartphones would be even better than ever.īatteries even at the 3000 mAh is decent but they should have that size for the low end and at least 5000 mAh for flagship ones. There is two major problems in smartphones today and that is, really small battery power for smartphones, even for flagship ones and crappy charging ports. Also, with smartphones now being thinner even makes it worse. I think they went wrong decision into smaller connectors in the smartphones. I don't care if they have to go back to bigger size connectors. Also, they need to make better stronger connectors for the charging cables. I am even afraid I will break it putting it in softly. Not an answer but I think people need to quit forcing the connector in so hard. ![]()
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