NOVEL THINKING

In this case it would drain. Am I missing something?

HI I have a PCB board that requires a Mini USB for power, however i was wondering if i could use some wires and connect a Micro USB instead also the Mini USB has 2 rows of pins 3 on the first row and 2 on the second I can’t find a diagram showing what these connections are please help quite new to this. Thats one thing I’ve been noticing a lot lately…for example i got a new droid razr and if i use an older usb it will connect and be accessible by computer or if u use a usb car charger it will connect and say charging…but will never really increase at all… Now if i use the motorola usb it works great… So some things have to be using the data connections also…I’ve also hard wired an Micro usb into my truck directly but it was basic 2 wire cable + and - and it also would say charging but never really did…Makes it frustrating when you save old cables and u end up having to get new ones anyways.

and the battery may run down enough so it cant be recharged (Li-Ion).

Due to the voltage drop in the cable and connectors, which is about 350mV, as well as losses in the charging circuit, the 5V supply may not be high enough to fully charge the battery.

The port hole is too large for most charging tips, doesn't matter if you get the charger from Moto or 3rd party. Revision 3.0 also adds extended configuration messages, fast role swap, and deprecates the BFSK protocol.

Detecting the Source Type The trick for a device that connects to any USB receptacle and uses that power to run itself or charge a battery, is knowing how much current is appropriate to draw. And does every usb then needs its own regulator? Sometimes the charging port just needs a thorough cleaning. @jerry perhaps the fone jammers should a 10 ’ bubble beyond the car, ive seen people reach across the seat or into the back seat to roll up windows and slap kids around ... If so then is it just dieing quickly? This is not quite true, the data pins in the USB specification play an important part in charging circuits. from 40mA to 750mA. The OTG device with the A-plug inserted is called the A-device and is responsible for powering the USB interface when required, and by default assumes the role of host. it the battery case is cracked and water hits the lithium you WILL have a fire, a company known as Boeing ( 787 Dreamliner ) decided they should write the FAA standards for charging Li-Ion batteries and ignored all other standards ( ntsb doe erda epri ), drug dealers supply their poisons to their victims with absolute disregard to the victims health or well being, The tobacco institute is an organization to maximize profit 2.5W added to 16W = 18.5W, should extend the battery to: @ibattery High-retention connector, mostly used on industrial hardware. Tried it several times, always the same problem.

There needs to be a CCCV (constant current, constant voltage) battery charging circuit between the USB port and the battery being charged. They go on Amazon from like $10-15.

. Sounds like a new battery might be necessary. Refer to your laptop's user manual to check for battery troubleshooting. thanks for your response.

City, State, Zip/Postal

USB Battery Charging defines a charging port, which may be a charging downstream port (CDP), with data, or a dedicated charging port (DCP) without data. this is about the largest you will see in usb cords

Same thing with the solar charger. Thanks. Optionally, the hub controller may draw power for its operation as a low-power device, but all high-power ports draw from the hub's self-power. Charging Li-Ion From USB trough Series 0.7V Diode will give 4.3V which is the charging voltage (~4.2V), I have an android tablet with a3.7V Li-Polymer battery. Accessory charging adapters (ACA) are devices that provide portable charging power to an On-The-Go connection between host and peripheral. The diodes only allow current in one way, so if you mount them the wrong way it simply won’t work; no harm done. What do you guys think? I went to Globe center to check my battery but my battery was okay. USB plugs fit one receptacle with notable exceptions for USB On-The-Go "AB" support and the general backward compatibility of USB 3.0 as shown. This is not a problem for the smartphone battery although it has a 4,2V limitation?

I use an iPhone as a GPS distance finder while playing golf. 2) The phone can be charger from USB-PC 500mA

Yes, these seem like extremely basic steps, but it’s important to make sure you’re not accidentally overlooking anything.

Additional details on these port types are described in the USB Battery Charging Specification, Rev 1.1, 4/15/2009. The percentage has increased (albeit slowly, of course, since USB charging take a lot more time). What can I do? 3) I can use other chargers I have in my home. Plugged in or not. "[96], In June 2009, many of the world's largest mobile phone manufacturers signed an EC-sponsored Memorandum of Understanding (MoU), agreeing to make most data-enabled mobile phones marketed in the European Union compatible with a common External Power Supply (common EPS).

Hi..sounds like it went dead. grateful for this site an all of the experts here! The Micro-AB receptacle is capable of accepting both Micro-A and Micro-B plugs, attached to any of the legal cables and adapters as defined in revision 1.01 of the Micro-USB specification. mobile phones, game controllers, e-readers, etc.) Before doing anything, make sure you have covered your bases. Thanks for this site! To allow for voltage drops, the voltage at the hub port is specified in the range 4.40–5.25 V by USB 2.0, and 4.45–5.25 V[41][not specific enough to verify] by USB 3.0.

Normally, when a computer is powered off the USB ports are powered down. and no lights to indicate that it is charging, Ordered the charging platform unit with power n charges now.plug still not working waiting for car charger now.

Data streams in both directions but the power is unidirectional and always flows from the host to the device. especially a 5V device, some of the european/american power adapters for 220V to 120v The charging voltage and current are: 5V, 500mAh gives 2.5W.

USB 2.0 provides for a maximum cable length of 5 meters (16 ft 5 in) for devices running at high speed (480 Mbit/s).

Information on new and popular products and resources, customized to specific markets, applications, and technologies.

USB cables and small USB devices are held in place by the gripping force from the receptacle, with no screws, clips, or thumb-turns as other connectors use. Thus, to support SuperSpeed data transmission, cables contain twice as many wires and are thus larger in diameter.

USB-C devices also support power currents of 1.5 A and 3.0 A over the 5 V power bus in addition to baseline 900 mA; devices can either negotiate increased USB current through the configuration line or they can support the full Power Delivery specification using both BMC-coded configuration line and legacy BFSK-coded VBUS line. A dedicated charging port places a resistance not exceeding 200 Ω across the D+ and D− terminals.

If the methods above didn’t solve the problem, the problem isn’t a broken charging port. Can charge current be momentarily lowered to reduce heat dissipation, or is a switch-mode design required? Innumeracy is in 510[math] it belongs in psychology or religion not math. It’s amazing and thanks a lot.

Your options are : Thank You for interest in Maxim Integrated. Country. This will limit the voltage to no more them 4.2V during the end of charging.

Are you trying to use your iPad while it’s charging?

Micro-USB connectors, which were announced by the USB-IF on 4 January 2007,[15][16] have a similar width to Mini-USB, but approximately half the thickness, enabling their integration into thinner portable devices. Please help me if you can, you can email me at maldaresi@gmail.com, I need to charge my power bank (13,000mah) how long it will take by using my accer laptop USB port I need to know pls reply me via Gmail,  Give it a little blow or use a compressed air blower for more power. If you are plugging your iPad into your Mac or computer, it will take longer to charge.

BU-103a: Battery Breakthroughs: Myth or Fact?

While it is certainly a frustrating problem, there are some troubleshooting tips to help you figure it out. plz reply….. Great article!

Am I damaging its battery? Full functionality of proprietary ports and cables with USB standard ports is not assured; for example, some devices only use the USB connection for battery charging and do not implement any data transfer functions. The USB 3.0 Micro-B plug effectively consists of a standard USB 2.0 Micro-B cable plug, with an additional 5 pins plug "stacked" to the side of it. Up to 6 unit loads; with SuperSpeed devices, one unit load is 150 mA. Order the replacement for $7 and with a T5 tool you can replace it yourself in 15 minutes. easiest solution? Larry Charging docks supply power and do not include a host device or data pins, allowing any capable USB device to charge or operate from a standard USB cable. And does every usb then needs its own regulator? some motherboards dont monitor current so can be 70A-120A.

That means the regulator itself will dissipate 500mA x (12V-5V) = 3.5 watts and it will get too hot if not screwed against a heat sink.

If I use iPad charger to charge my iPhone, would it cause problem?

The number one reason phones stop charging due to electrical damage is because of cheap third party chargers. The USB specification requires that the cable plug and receptacle be marked so the user can recognize the proper orientation.

[86][87] This was the first standard to use the convention of shorting D+ and D− in the charger. If you don’t connect anything to the data lines in the USB connectors, the currents for each phone will never be higher than 500mA. Yesterday I had a smoketastic e-cig battery explode in front of me after about 1 hour on charge via USB port.can a nyone explain .The computer was damaged and Iwas hiot by the xploding cartridege .The remains burst into flame and needed an extinguisher to put out.

Plug it in again and see if will charge now.

Only downstream facing ports provide power; this topology was chosen to easily prevent electrical overloads and damaged equipment. EXCEPT, there are actually at least 2 versions of micro-USB connectors.

The voltage limit is very critical which is why charging circuits use both CC CV techniques. Some USB ports and external hubs can, in practice, supply more power to USB devices than required by the specification but a standard-compliant device may not depend on this. The most probable culprit is most likely the need of a charge port repair.

The other possibilities could be: 1. Check out YouTube video on how to do it.

I’m very appreciative of any information and help. used 4 diodes,2 going to + battery line, 2 from the - line to a usb port.used the data usb modem cable. ", "Battery Charging Specification, Revision 1.2", "Battery Charging Specification, Revision 1.1", "Battery Charging v1.2 Spec and Adopters Agreement", "Minty Boost — The mysteries of Apple device charging", "Modify a cheap USB charger to feed an iPod, iPhone", "USB 3.0 SuperSpeed update to eliminate need for chargers", "USB 3.0 Promoter Group Announces Availability of USB Power Delivery Specification", USB Power Delivery v2.0 Specification Finalized - USB Gains Alternate Modes - AnandTech, "USB Future Specifications Industry Reviews", "USB-C charging: Universal or bust! ethernet with twisted pair telephone wire is good for 300’

J: That makes sense….but I’ve also noticed a difference in just the cables themselves .....For example..I had a micro usb from my old blackberry storm and with everything else the same it couldn’t keep up like the stock motorola cable….now what you said makes sense but is there differences in basic usb cables? Tesla’s iPhone Moment — How the Powerwall will Change Global Energy Use, Painting the Battery Green by giving it a Second Life, Charging without Wires — A Solution or Laziness, What everyone should know about Battery Chargers, A Look at Cell Formats and how to Build a good Battery, How to make Batteries more Reliable and Longer Lasting, Recognizing Battery Capacity as the Missing Link, Managing Batteries for Warehouse Logistics, How to Make Batteries in Medical Devices More Reliable, Possible Solutions for the Battery Problem on the Boeing 787, Impedance Spectroscopy Checks Battery Capacity in 15 Seconds, Examining Loading Characteristics on Primary and Secondary Batteries, BU-001: Compartir conocimiento sobre baterías, BU-302: Configuraciones de Baterías en Serie y Paralelo, Change-log of “Batteries in a Portable World,” 4th edition: Chapters 1 - 3, Change-log of “Batteries in a Portable World,” 4th edition: Chapters 4 - 10.

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