Is the old charger rumor true?

Discussion in 'Droid RAZR Support' started by gamer6592, Nov 23, 2011.

  1. gamer6592
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    gamer6592 New Member

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    Is it true that you have to use the charger which comes with your phone? Would it be bad to use my old Thunderbolt charger on my Razr? Does it even matter? Even if the voltage differs between each charger, they are both pretty big/powerful phones and it shouldn't be that different going from my thunderbolt to my Razr, right? Is there a website or some way I can look up the exact voltage or whatever each phone requires to charge and the voltage each charger puts out? Thanks.
  2. MadBlackLady
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    MadBlackLady New Member

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    I use a blackberry charger for my bionic... lol hope that's not bad.

    Sent from my DROID BIONIC using DroidForums
  3. rubiksc00p
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    rubiksc00p Well-Known Member

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    No... They're all the same really. The only time different cables matters is sometimes for connecting to the computer. :biggrin:
  4. FoxKat
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    FoxKat DF Super Moderator Staff Member Premium Member

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    Not so...there are considerable differences between one and another wall-wart (charging wall blocks). Some are very good at smoothing out the power to eliminate or minimize any fluctuations in voltage, reduce or eliminate any Radio Frequency Interference, and make sure that the current is consistent (Motorola chargers are one of them). Others are much less successful at minimizing these effects. The result for me has been that when using a non-Motorola charger on either the Droid 1 or Droid 2, and if I was trying to use the screen (digitizer) to scroll or select, the dirty power of the non-Motorola chargers caused the screen to be jittery and in some cases downright unresponsive, instead jumping all over the place, selecting things, moving icons, starting apps, etc., all with only one finger trying to scroll the screen. Disconnect the rogue charger, plug in the Moto charger, and the problems disappear.

    I believe that for charging only, as long as the charger is rated at 800-850mah, it will do a fine job of charging, but you are likely to have the difficulties described above if trying to use the phone while plugged into one of these non-Moto chargers. It also didn't seem to matter if it was a name-brand charger or a China import no-name.
  5. FoxKat
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    FoxKat DF Super Moderator Staff Member Premium Member

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    The voltage for the Micro USB is standardized at 5VDC. As for amperage, they are rated in mah, and the standard minimum is I believe 500mah, however most cellular phones need upwards of 800mah or more. The Moto chargers for the D1 and D2 are rated at 850mah, so to be sure it will charge fully the charger should be rated at least 850mah. A car adapter typically puts out considerably more, which is why they charge the phone so much quicker. I don't know the typical rating for car adapters, but it could easily be 1,200mah or higher.

    Answers to the other questions are in a reply to rubiksc00p.
  6. rubiksc00p
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    rubiksc00p Well-Known Member

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    The OP was asking specifically about two quality chargers.

    About all chargers though...
    It is really hit and miss... It is very subjective... Some penny chargers from China have great reviews and some nice chargers don't! :p
  7. FoxKat
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    FoxKat DF Super Moderator Staff Member Premium Member

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    Agreed, but as I said...even the "quality" chargers may not mate up well with the Droids. I haven't gotten my RAZR yet (expect delivery Monday), so I will be testing the chargers I have home here, which are known to cause interference for me on the D1 and D2. I'll report my findings then.

    I do know that Motorola recommends you ONLY use THEIR approved or Verizon's re-branded (Motorola) approved chargers. The interference I have experienced may be the reason. I also know that if the phone fails and it can be attributed to using a non-approved charger, your warranty will not be honored by either Motorola or Verizon. :icon_evil:
  8. rubiksc00p
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    rubiksc00p Well-Known Member

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    Here's how I look at it. I don't think any chargers are going to hurt your device, but some definitely are better than others. Try them out, and see what works. :biggrin: I really doubt that VZ would actually blame a failure on a charger, but it's always possible... ;)
  9. erickkincaid
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    erickkincaid New Member

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    it must be ok....otherwise it may effect on your cellphone
  10. firefighterguy
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    firefighterguy New Member

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    Apologies if it has been stated already. I didn't read through the whole thread like I should have. Been really busy. But still no excuse. So if you want to flog me afterward, feel free.

    But the main thing to look at is the polarity on the charger. Then after that, look ar the max power ratings - input and output volts, amps, mA and Hz. If it is damn close, it should be ok ONLY IF THE POLARITY IS THE SAME (i.e. positive and negative). AND make sure it is not drawing too much output power than the device's charger that it came with (also should be in the phone's manual and also on the charger that came with it. Its all the *funny* writting on the charger). Because if the charger that came with the phone is rated for output 5.1V 850mA and the output power on the charger you want to hook up is anything higher - like 6.4 - just as an example (there may not be such a voltage for the charger) - then you WILL fry your phone. If it is less, it will take longer for it to charge, but it will be ok (like car chargers. It is usually less...kinda... But different story.

    Usually mini USB's are pretty universal. But you should make sure about the polarity. Sometimes they are reversed. And just make sure about the input power too, as you might come across a rare occurrence where it is different.

    *Edited. I fixed input" to "output" where applocable.

    *Further edited. I see that FoxKat had already said what I was saying. So let the flogging begin....

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    Last edited: Nov 24, 2011
  11. tc1
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    tc1 Member

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    Any mini USB should work fine for charging BUT I've noticed with Motorola that some will not let you connect to your computer to transfer files.

    Sent from my DROID RAZR using DroidForums
  12. FoxKat
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    FoxKat DF Super Moderator Staff Member Premium Member

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    No flaming necessary. But I still stand by the issue of non-approved chargers causing interference with digitizer. The phone gets a mind of its own when using 3rd party chargers. The symptoms are not unlike when the digitizer gets wet.

    And YES, Verizon does flag faulty units for damage from non-approved chargers. One of the first things they ask if the phone stops charging properly is whether you are using a non-approved charger. If you answer yes, they tell you they can not honor the warranty. I've been witness to this at the phone center store on several occasions.

    Sent from my DROID2 using DroidForums
    Last edited: Nov 27, 2011
  13. firefighterguy
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    firefighterguy New Member

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    (Thank you). Yes, that is very true.

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  14. rubiksc00p
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    rubiksc00p Well-Known Member

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    Yep... That's for sure about messing with the digitizer... I have a micro USB and it's super duper caraaazy! :D

    Welp... I guess if you did have a charging issue they would ask, I didn't think about that... =P
  15. sublimewade
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    sublimewade New Member

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    I have my old droid x charger for the car is that okay ?

    Sent from my DROID RAZR using DroidForums
  16. jtpowell
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    jtpowell Member

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    Your old car charger is fine. I'm using my HTC Inc car charger in the car and generic micro USB on 1.1 hub at the office. All work fine.
  17. FoxKat
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    FoxKat DF Super Moderator Staff Member Premium Member

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    The Droid X is a Motorola phone and so is the Razr so there is no compatibility issue. The symptoms I mentioned are not specific to any particular charger brand, and I have found both generic and name-brand chargers which exhibit the mentioned symptoms, as well as some which don't. Just remember, if you take your phone in for repair, make sure you don't tell them you were using a non-approved charger or they may wish to blame the damage to theany non-approved charger brand and void your warranty.
  18. wyld
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    wyld New Member

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    I use my charger from my Droid x to charge my RAZR and my Jawbone Icon I have chargers and usb cables all over my house from others phones like LG and they all work just fine!
  19. FoxKat
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    FoxKat DF Super Moderator Staff Member Premium Member

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    As the saying goes, "your results may vary", and for charging only, virtually any USB charger should work fine. It has only been while charging and using the phones (D1 & D2) that I have experienced the crazy screen issues. Just keep the fact that you use non-approved chargers to yourself if you have to take the phone in for a charging problem.
  20. dana12
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    dana12 New Member

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    android devices chargers are same
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