New answers tagged

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Voltage is not a good indicator normally of State of Charge (SoC) for Li Ion batteries, since the battery can show higher Voltage but not hold charge. Graph 2 highlights the relatively flat Voltage curve, compared to SoC drop Voltage of a fully charged battery should be 4.2V (see table 2). Seeing your comment on battery voltage being less, after 2 days ...


1

I've done a little research on this (well I read the Wikipedia article on USB) and it seems that for fast charging there are two standards: the Apple one, and the non-Apple one. So yes, the two ports on your portable battery are different. The real question is - does it matter? My experience is that some devices don't care which socket they are plugged ...


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Basic things to check: Is the charger broken? (try a different charger) Is the charger the correct voltage and current for the phone? (check your phone specs and see if they match what's written on the charger, try a wall charger and a usb charger) Is the battery broken? (try a different battery if you can find someone with the same tab)


-1

It's the charging port connector. It has a thermometer sensor for the battery. It is probably malfunctioning. Replace it and see if it works out.


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Battery calibration is a myth and definitely will not help you in any way. For details see my answer Bought a new battery. Do I need to calibrate it 3C Toolbox (and maybe other apps, not sure though ) read the battery information from the ROM files and not from the battery you have. This I learnt when I sought a clarification from the developer, when the ...


1

Standards USB standard 3.0 in lays down standards of 10 W: 5 V, 2 A  for smartphones and tablets Battery Charging Revision 1.2 lays down " standard for establishing the proper way to charge a battery from a USB port " American Wire Gauge (AWG) is a reference for thickness of cables. In this system, larger numbers indicate thinner wires. USB specification ...


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Hardware is not "capable" to decide charging rate based on "newness" or otherwise of cables In all probability, USB cables you are using are of poor quality, wrong length and thickness What I would suggest: Google for "24 awg micro USB cables Less than or equal 2 meter length and purchase from reputed vendor Why these specs for USB cable? Long ...


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Maybe the voltage supplied is too low for your tab to boot up with a completely drained battery. My suggestion is to try using original tab chargers or try charging your tab with a car charger. Using a JBL tab charger might work.


3

When you are switching to a different charger from What is OEM supplied, things to bear in mind: Type of battery (not really relevant these days as most batteries are Li-Ion or Li-PO . Both have sane charging characteristics. Your battery is Li-PO). Battery type dictates charging / charger features Voltage This is critical and never use higher rated ...


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It is possible to "cheat" the mobile into thinking that is connected to battery, while it is in fact connected to external power supply How to use phone without battery provides instructions on doing it and has a 4 pin configuration as on your device. I am not elaborating on the details involved as This is not a standard method and more of hobbyist/ DIY ...


6

This is indicative of poorly designed/ defective piece and best replaced ASAP. From bwDraco's answer on Why do some AC adapters and power supplies generate a whining noise, and what can I do about it? (emphasis added; missing text denoted by "....") Most modern AC adapters are switched-mode power supplies. The internal switching frequency of an SMPS is ...


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This could be due to Faulty USB cable loose connection Faulty Charger In such a situation, current delivered to the device is lower than the current expected from an AC charger and the device responds by notifying that it is being charged from USB (am basing this on a similar report of HTC You can download Ampere and see the current reading in both ...


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Based on the information provided, it appears that the problem could be due to any of the following factors: Weak/Dying Battery: Can be verified by changing the battery System not going to deep sleep: Could be due to wakelocks letting the system alive either from apps or system like media server. Clean Master may say that it had killed apps, but it cannot ...


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Yes. There is a relation and the explanation is little long Quoting from What is C Rate?, C Rate or Charging rate is defined as C-rate is a measure that governs at what current a battery is charged and discharged. At 1C, a battery rated 1,000mAh charges at a current of 1,000mAh. In an ideal world the battery would be fully charged in 60 minutes. At 1C, ...


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By now you would have long upgraded, but answering this hoping it may help anybody read it. "What is a canonical battery test that I can run (now and after upgrading) to determine whether upgrading deteriorated the battery life? Battery usage depends on so many parameters. The list is possibly endless but few examples are highlighted below, leading to the ...



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