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OnCore Portable backup battery ETC-500     Best Seller!
 (39 reviews)  See All Reviews
SKU:  211-903-001
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Today: $12.99 ($12.99 each)
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Ships from U.S warehouse. Most customers receive within one week.
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Description & Specs

    OnCore Portable backup battery ETC-500

    Manufacturer Part # ETC-500

    OnCore's portable power supply allows you to charge your phone from an outlet or from its built-in back-up battery. The built-in back-up battery allows you to charge your phone after the power supply has been unplugged from an outlet.

    Features:

  • Travel charger with USB connector - 500 mAh @ 5.5V
  • built-in 1300mAh Polymer Battery with PCBA
  • Internal battery automatically charges once the external device is fully charged
  • Charge time varies from 1-3 hours
  • Charging indicator lights
  • Works with iPhone and Android phones (Charges may vary depends on phone model)
  • 6 connectors included: LG VX8500 (18-Pin), Motorola V3 (Mini USB), Motorola V9 (Micro USB), Nokia 6101, Samsung M300 (S20-Pin), and Sony Ericsson K750, iphone/ipod cable NOT included.
  • 30 " retractable cord
Return Policy  

    Satisfaction 30 days Return Policy:

    • Return for refund: 30 days from invoice day
    • Return for replacement: 30 days from invoice day

     (other terms and condition may apply, please click here for full return policy.)
Product Picture
OnCore Portable backup battery ETC-500
OnCore Portable backup battery ETC-500
OnCore Portable backup battery ETC-500
OnCore Portable backup battery ETC-500
OnCore Portable backup battery ETC-500
OnCore Portable backup battery ETC-500
Product Reviews Sort By:    Newest     Most Helpful 
OnCore Portable backup battery ETC-500.
Average Review: (4.28 out of 5)  based on 39 ratings.   Total # of Reviews: 39 user reviews.  Write a review

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Given the price and usefulness, I'm honestly surprised about the durability and reliability of this thing. Perfect gift for anyone who isn't a Luddite. (Esp. since it comes with interchangeabble adapter plugs so it works with practically anything that's USB.)
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ataraxia on 12/13/2012
It's just an okay item. At least it doesn't ruin your phone/battery as far as I can tell. Although my phone is experiencing touch sensitivity problems now not that I can tell if it's from using this or not. For my 1390 mAh battery in my Moto OG Droid, it will barely load the unit up to a 30-40% after the battery has died and sometimes won't even make it up to 15% before the phone wants to die again after the charge is used up from the OnCore device. This is when the OnCore is fully charged and then stored until needed. A matter at most of a few days. Full charge outputs at most 40% from a dead battery. Okay as an emergency use but could be a lot lot lot better.
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D on 12/12/2012
Meritline.com Verified Buyer
I like this little thing a lot. I didn't have extremely high hopes for it, I assumed I wouldn't get much power out of it, but that a little bit was all I really needed if I really HAD to charge something. Well, it's been much better than I thought. My brother was using his iPad2 to text, and it was totally dead, so I offered him this to see if it would charge it at all. He was able to keep texting for at least two or three hours. Not only that, but it actually charged it a decent amount in that time, though I don't know if he ran the battery completely dry. I love that it's also a wall charger. You can plug it in and use it to charge your devices, then unplug it and use the battery. It doesn't charge the backup battery while it has a device plugged into it, however, if it's charged, it won't drain it either.
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S. on 9/21/2012
Meritline.com Verified Buyer
A great product at an excellent price. This product comes in very handy for portable charging of devices which are power hungry - and with a USB port, it can be improvised to charge your iPhone too with the regular USB/iPhone charging cable. Would highly recommend
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s123002 on 7/30/2012
Meritline.com Verified Buyer
received item on time, within one week. body and LED's look little flimsy but works. after a full charge it only charged my Galaxy from 30% to 56%. not that useful if you have a long day out. Also quite bulky to carry it with you. Would love to return it if possible and buy the one which can give me at least one full charge.
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zooooon on 5/24/2012
Meritline.com Verified Buyer
Works as described. Took EVO 4G from dead to 50% while I was using it heavily. Only wish the prongs folded in to make it more pocket-friendly.
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Chris (OH) on 5/22/2012
Meritline.com Verified Buyer
Good selection of adaptors. Not sure what the plastic sleeves are for... folding plug whould have been nice (it doesn't). Battery is rated at 1300MaH, but in terms of charging ability it is more like 500 - about a third of the capacity of a typical smartphone battery. Nice idea, but not quite there. Needs a LOT more charge capacity - even if it takes longer to charge...
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Wizard Prang on 5/20/2012
Meritline.com Verified Buyer
Very handy little device. As others have said, it would be nice if the plugs folded up, but it really doesn't matter. I have recommended it, and ordered another one, for a friend.
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starmaha on 4/20/2012
Meritline.com Verified Buyer
works as it should it would be nice for the plugs for the wall fold in
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dick on 3/26/2012
Meritline.com Verified Buyer
Had purchased few USB backup batteries for both cell phone and other USB charging devices. Purchased ETC-500 for its simultaneous charging one device via ETC-500's USB out, as well as the ETC-500 itself. This is a good feature because the USB backup battery is essential while traveling, and charging all devices (laptop, tablet, cell phone, camera, etc.) back at the hotel at night with limited outlets is difficult. But also be warned that due to the very thin retractable wire came with the ETC-500, it charges the device very slowly! also ETC-500 isn't fully charged (charging status LED stayed red)until about 20 minutes after the additional device was unplugged from its USB out port. This is acceptable for me since I plan to charge my devices overnight while traveling.
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TLC on 3/22/2012
Showing comments 1-10 of 39 (Next 10)
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