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Old June 8th, 2011, 04:30 PM   #1 (permalink)
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Default a500 charger

Hi all, the standard a500 charger is a bit short, I have a 90w. Universal laptop charger with various fittings, any idea which voltage to set it at for use with my a500?

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Old June 8th, 2011, 04:58 PM   #2 (permalink)
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I believe it's 12v. Check the sticker on the side of the tab. Mine fell off, so I can't check it.
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Old June 8th, 2011, 07:37 PM   #3 (permalink)
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Originally Posted by mrcaptain View Post
I believe it's 12v. Check the sticker on the side of the tab. Mine fell off, so I can't check it.
12v but 1.5A
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Old June 9th, 2011, 10:14 AM   #4 (permalink)
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I cannot imagine why Acer choose to use short charger wire
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Old June 9th, 2011, 05:11 PM   #5 (permalink)
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So if I set it to 12 v. It should be fine?
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Old June 9th, 2011, 05:36 PM   #6 (permalink)
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No. Amp needs to be 1.5A
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Old June 10th, 2011, 05:29 PM   #7 (permalink)
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Sorry to sound a bit dumb, but will the universal charger not be suffucuent to charge it up if set to the same voltage?
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Old June 11th, 2011, 12:05 AM   #8 (permalink)
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Sorry to sound a bit dumb, but will the universal charger not be suffucuent to charge it up if set to the same voltage?
Nope. Amps are just as important (it's the juice that can kill you) .
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Old June 11th, 2011, 04:25 PM   #9 (permalink)
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Originally Posted by Myronbg View Post
Nope. Amps are just as important (it's the juice that can kill you) .
Rubbish, if the amps rating is lower than the supplied charger it just means that it will charge slower like an iPad. If you want the same performance as your original charger then go for one that is rated to at least 1.5 amps.

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Old June 12th, 2011, 12:03 AM   #10 (permalink)
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Rubbish, if the amps rating is lower than the supplied charger it just means that it will charge slower like an iPad. If you want the same performance as your original charger then go for one that is rated to at least 1.5 amps.

Pete
So I guess you've tried this on the A500 with a charger with almost 40% less amps & it actually charged?
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Old June 12th, 2011, 01:58 AM   #11 (permalink)
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Quote:
Originally Posted by Myronbg View Post
So I guess you've tried this on the A500 with a charger with almost 40% less amps & it actually charged?
Don't need to, I have been a tech for over 35 years and have designed many power supplies and charging systems and it is just basic electronics that dictates what will happen.

Cheers.

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Old August 5th, 2012, 07:10 AM   #12 (permalink)
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Where can I buy this a 500 charger every where says that they have to order it,in the US they have to order it from China,now I'm in China and the Acer outlet says they have to order it for me this is sick. Why can't Acer stock their outlets with the needed accessaries
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Old August 5th, 2012, 07:26 AM   #13 (permalink)
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Blah
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Old August 5th, 2012, 12:16 PM   #14 (permalink)
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Quote:
Originally Posted by PeteDee View Post
Rubbish, if the amps rating is lower than the supplied charger it just means that it will charge slower like an iPad. If you want the same performance as your original charger then go for one that is rated to at least 1.5 amps.

Pete
Just saw this old thread pop up because of the recent post.

The advice in the quote above is erroneous. It is important to always use a power adapter that meets manufacturer specifications. If the tablet was engineered to require 1.5A, then the power supply must provide at least that much current on demand or it may fail due to overload. Depending on the design of the affected components, such an overload may result in low voltage, cause the charging circuit to malfunction, blow a fuse, burn up, or all of the above.

What will likely happen if an a500 is used with an adapter that supplies insufficient current is that under higher loads -- i.e., using while charging -- a drop in voltage caused by the inadequate current capacity will cause the battery charge controller in the tablet to automatically disconnect to protect the equipment. This behavior has been observed by a number of Iconia owners while trying to use certain aftermarket chargers not meeting specifications, preventing the units from recharging.

A side note: It's interesting that the conversation in the thread above progressed as it did, because the power supply that the OP was asking about would have likely provided enough current to support roughly 5 tablets simultaneously. At 12V, 90W of sustained output power will supply 7.5A of current.
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Old August 6th, 2012, 05:58 PM   #15 (permalink)
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Originally Posted by jmart3855 View Post
Where can I buy this a 500 charger ...
The same adapter is specified for use with the a100, a200 and a500... if that makes the search a little easier.

Here are a few examples, depending on where you are located:

Acer Iconia Tab AC Power Supply Travel Pack - Walmart.com

12V Acer Iconia A100 Tab Tablet Mains AC-DC Adaptor Power Supply Charger UK EU | eBay
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Old September 19th, 2012, 01:20 PM   #16 (permalink)
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Default Speaking of chargers

OK - the power plug (mini usb or whatever you call it) seems to be same size as what we use on our Samsung phones - however those don't seem to charge it....they plug in fine but dont charge it - does this have to do with the amps and voltage thing???
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Old September 19th, 2012, 02:04 PM   #17 (permalink)
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Yes. The charger for the A500 puts out 1.5 amps which is way higher than the USB port can provide.
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Old September 19th, 2012, 06:15 PM   #18 (permalink)
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I've read several posts about the inadequate length of the charger cord and some of the extents the owners go to get something better. I just took an old cell phone mobile charger cord... the coil type and spliced mine to make it considerably longer. Very simple solution.
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Old September 20th, 2012, 09:58 AM   #19 (permalink)
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Quote:
Originally Posted by Opticman View Post
OK - the power plug (mini usb or whatever you call it) seems to be same size as what we use on our Samsung phones - however those don't seem to charge it....they plug in fine but dont charge it - does this have to do with the amps and voltage thing???
That's because the round hole on the same side as the micro USB is where you plug in the charger, the micro USB is not wired for charging the device.
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Old September 24th, 2012, 09:10 AM   #20 (permalink)
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The tablet will charge through the micro USB if it's hooked to your computer. Not sure how or why but it does. And it's a full charge as tho it was hooked to a standard c harger. I know this since I restored mine from ICS back to 3.2.1 and didn't have to charge it durring the process and then back to ICS and still didn't have to put it on the charger.
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Old October 24th, 2012, 09:56 PM   #21 (permalink)
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Psh, my charger is just iffy, acts like it doesn't want to charge sometimes. I'm going to have to check and see if its in my warranty, before that expires
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Old January 9th, 2013, 06:42 PM   #22 (permalink)
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I droped my tablet and it refused to charge on the charger. I thought about it and pluged in the mini usb and then it started charging normally through the charge plug. Also, I found you have to use a pure wave charger. If you use a modified wave charger it won't charge. Found this out when I tried to charge it in my truck with and inverter. The pure wave inverter would charge it but not the modified wave inverter. Why this has happened I do not know but just thought ya'all should know.
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