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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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Meritline.com Verified Buyer
Wonderful product! Used this at a convention as portable power to recharge my iPhone* during the day and to charge my iPhone at night in the hotel room. When done charging the phone it automatically charges itself, too. Previously used a portable Duracell pack but had to use a USB outlet adapter to charge that, too. It wasn't nearly as efficient (it needed to charge in an adapter not included next to the iphone charging in another adapter) and didn't hold as much power for portable use. Don't really know how much power this thing stores but it could take my phone from 5% to %100 with power left in it. I never completely killed it recharging my phone which I was using as an audio recorder in lectures. Only thing that could have made this better would have been an iPhone/iPod adapter for the cable. *had to use my own iPhone USB cable.
Was this comment helpful? yes no   (24 people found this comment helpful, 2 did not)
Promee on 4/8/2011
Meritline.com Verified Buyer
Excellent as a plug-in charger for my Samsung Galaxy S phone. Reserve power in internal battery is sufficient to recharge the phone at least 50%. Perfect for emergencies or travel.
Was this comment helpful? yes no   (14 people found this comment helpful, 0 did not)
Neonentity on 4/14/2011
Meritline.com Verified Buyer
It works well. Handy for when you want that last bit of charge but can't wait. Also, it reduces the number of devices you might need to carry since it both charges and provides auxiliary power. Would be nice if it could charge more than one USB device. Keep in mind, the battery in this unit has less capacity than those in many smartphones so it will not be able to provide a full charge unless you're just topping up or are plugged into the wall. For example, my Droid x's base battery has 1.5Ah. This unit's backup battery has 1.3Ah.
Was this comment helpful? yes no   (8 people found this comment helpful, 1 did not)
David on 8/19/2011
Meritline.com Verified Buyer
Great deal for what it is. Though the fact that the AC prongs do not fold up is a nuisance, the unit functions very well. It more than doubles the life of my iPod 4G battery.
Was this comment helpful? yes no   (8 people found this comment helpful, 0 did not)
jertyler on 8/18/2011
Meritline.com Verified Buyer
Only charges my Motorola Atrix from about 15% to 40%. Not worth it.
Was this comment helpful? yes no   (8 people found this comment helpful, 7 did not)
DonE188 on 7/25/2011
Meritline.com Verified Buyer
Great product, it charges about 2 hours before it died.. i got 90% full for my Galaxy S.. i wish we can hide the charge prawn, it's still small enough to put in pocket for portability.
Was this comment helpful? yes no   (6 people found this comment helpful, 0 did not)
calvin chan on 9/19/2011
Meritline.com Verified Buyer
Works as advertised. No problems so far in 2 weeks of use. Good stuff. Great price.
Was this comment helpful? yes no   (6 people found this comment helpful, 1 did not)
CoolSimple on 4/8/2011
Meritline.com Verified Buyer
Excellent backup source for my Samsung cell phone, iPod 4th gen 32GB and Plantronics Voyager Pro bluetooth headset. WAY more reliable than the CoolerMaster Choixx I have that cost 4x this one!
Was this comment helpful? yes no   (5 people found this comment helpful, 0 did not)
rithemking on 6/8/2011
Meritline.com Verified Buyer
Wow! This little gadget is a winner. It charges iPods, Touches, and even iPads. With the interchangeable tips, it can handle even more than that. Solid construction, easy to use, worth the price.
Was this comment helpful? yes no   (4 people found this comment helpful, 0 did not)
Bobo on 6/26/2011
It's a great idea and good form-factor, but unfortunately the current output is not up to snuff for the latest generation of higher-drain mobile phones. 5V/500mA is only able to trickle-charge my Nexus S, and only when it's not actively in use. If I'm using it, the phone continues to discharge, albeit more slowly. If this could do 700mA-1A out I wouldn't hesitate to recommend it!
Was this comment helpful? yes no   (3 people found this comment helpful, 0 did not)
microwiz on 3/20/2012
Showing comments 1-10 of 39 (Next 10)
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