Android :: Droid Charging Requirements (Voltage And Current)

Mar 22, 2010

I have several USB-MicroUSB cables (some OEM Motorola, some other brands), several 12 volt-USB converters, several cars, and several devices that accept MicroUSB connection for power. With everything other than my Droid (including a Blackberry and a GPS unit) every combination of cable and 12volt converter works. With the Droid, all of the combinations will turn on the screen (indicating the Droid knows a cable has been connected), but only a few combinations will actually charge the Droid. The only possible explanation I have come up with for this is that the Droid has some sort of minimum current requirement, and that some converter/car/cable combinations are unable to meet this requirement. So, what is the minimum voltage and current that will allow the Droid to charge?

Android :: Droid Charging Requirements (Voltage and Current)


Motorola Droid :: UPDATE - New Kernels - Low Voltage - Medium Voltage

Mar 26, 2010

As usual, these are update.zip format. Rename to update.zip, place on root of sdcard, and install (don't forget to 'allow').

My advice to you, in selecting a kernel, is to #1 try the lowV varieties first. Then select the slowest kernel that exceeds what you expect to run on a day to day basis. So if you plan on running 800-1000, run the 1.0lv kernel.

If for some reason you get stuck on the 'M' while booting, first try switching to the mediumV kernel. If that does not work, back the speed down, say from 1.25 to 1.2, or 1.2, to 1.1, etc.

5-slot Low Voltage

1.0Ghz (125/250/550/800/1000)
1.1Ghz (125/250/550/800/1100)
1.2Ghz (125/250/550/800/1200)
1.25Ghz (125/250/550/800/1250)

5-slot Medium Voltage

1.0Ghz (125/250/550/800/1000)
1.1Ghz (125/250/550/800/1100)
1.2Ghz (125/250/550/800/1200)
1.25Ghz (125/250/550/800/1250)

7-slot Low Voltage

1.0Ghz (125/250/550/700/800/900/1000)
1.1Ghz (125/250/550/800/900/1000/1100)
1.2Ghz (125/250/550/800/1000/1100/1200)
1.25Ghz (125/250/550/800/1000/1100/1250)

7-slot Medium Voltage

1.0Ghz (125/250/550/700/800/900/1000)
1.1Ghz (125/250/550/800/900/1000/1100)
1.2Ghz (125/250/550/800/1000/1100/1200)
1.25Ghz (125/250/550/800/1000/1100/1250)

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Apr 19, 2010

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Jul 27, 2010

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May 26, 2010

Assuming I keep CPU speeds the same as stock, is a low voltage kernel going to save my battery life significantly?

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Apr 9, 2010

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May 11, 2010

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May 13, 2010

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Aug 17, 2010

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Sep 12, 2010

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Apr 30, 2010

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HTC Desire :: Car Charger Voltage Inputs

Aug 18, 2010

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Oct 26, 2010

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HTC Incredible :: Low Voltage Kernal By Ejhart

Jun 24, 2010

Get it here. [Kernel] Stock speeds undervolt. [update] - xda-developers

I am using it and my phone seems to run much much cooler. Haven't really tested battery life yet, but it seems better.

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Nexus :: Need Power Adapter / That Doesn't Do Any Voltage Changes

Feb 11, 2010

I live in the UK and have ordered my Nexus One from the US, without a UK adapter. My question is what voltage the standard AC adapter uses, as the UK runs 240V typically. I can get hold of a cheap US-UK power adapter that doesn't do any voltage changes, so I was wondering whether that would be sufficient. Does anyone have any experience with this?

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