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Home NEEWER® Portable AA Battery Powered Emergency Charger with Flashlight - Black - For Anything Powered Via USB | |
|  | |  | | | NEEWER® Portable AA Battery Powered Emergency Charger with Flashlight - Black - For Anything Powered Via USB | | | | | | | |
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| | | SKU:
NAS-B003M9Z5F6 | | In Stock | | Availability:
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| | Description | | |
| | Product Details | | Product Weight: | 0.09 pounds | | Package Length: | 8.4 inches | | Package Width: | 5.8 inches | | Package Height: | 0.9 inches | | Package Weight: | 0.1 pounds | | Average Customer Rating: |  based on 74 reviews |
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| $0.01+ $4.99 *Shipping | New | | | $0.51+ $2.98 *Shipping | New | | | $2.92+ $0.50 *Shipping | New | | | $4.21+ $5.58 *Shipping This item is eligible for FREE Super Saver Shipping on orders over $25. | New | | | $50.00 This item ships for FREE with Super Saver Shipping. | Used
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| $0.01+ $4.99 *Shipping | New | | | $0.51+ $2.98 *Shipping | New | | | $2.92+ $0.50 *Shipping | New | | | $4.21+ $5.58 *Shipping This item is eligible for FREE Super Saver Shipping on orders over $25. | New | |
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| | Customer Reviews | Average Customer Review: ( 74 customer reviews )
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Most Helpful Customer Reviews
54 of 56 found the following review helpful:
 Excellent Charger Jul 04, 2010
By Shiven4
I don't review often, but I felt compelled to write a review for this because there weren't many and because this is an excellent device at a great deal. I bought this with the intention of using rechargeable AA batteries to recharge my iPod Touch 2G when away from other power sources. It works great for this.
After a little bit of testing, I found that this will consistently charge my iPod Touch from completely drained to 100% in about 3 hours from 2 fully charged AA rechargeable batteries. One full charge completely drains the AA batteries. It will get to 80% in about 1.5 hours. (I tested Energizer, Everlast, and Eneloop rechargeable batteries with this, and all produced about the same results). Interestingly, I also tested Rayovac AA alkaline batteries, which only produced a 45% charge before they were completely drained.
I also used this with an HTC Incredible, for which it produced about half a charge before the AA batteries were drained.
Overall, it works very well for what I bought it for, and at a very reasonable price for something like this.
32 of 32 found the following review helpful:
 Works, but not very efficient, and also it smells! Apr 23, 2011
By David L
Pros: Cheap, provides consistent voltage, good current, and easy to use.
Cons: Cover very difficult to get off, LED is almost useless (super dim, although can be used as a battery life indicator), Switch can easily be turned on while in pockets, device does not handle high currents very well (creates noxious, burning plastic smell in charging currents >500mA), conversion is 5V is inefficient (loses much of the energy to heat).
Other thoughts: The D+ and D- on the USB port is shorted so that some devices (e.g. mobile phones) charges more quickly using higher currents than ordinary chargers. When the device is switched on, it provides a constant 4.98V on the USB port, even when the batteries themselves approach 1.0V. While the device is off, the voltage will slowly go down from 4.98V to the voltage of the installed batteries (possibly due to capacitance?).
Overall, this is a good device for its price. However, I would not really use it as your ordinary backup charger because it has a serious design flaw. Depending on what you are planning to charge using this device, it might work for you. However, as stated on the package itself, this device is only designed for an 500mA output. That being said, since D+/D- is shorted, many phones recognize this as an AC source and draws currents up to 1A. This is a huge problem since the internal circuits get so hot that it essentially melts something (plastic?) inside (you will soon notice a burning plastic smell if you plug this in a high current drawing device like an iPhone). Also with this great amount of heat generated, many of of battery's stored energy is lost to heat rather than charging your device (to be expected since you are upconverting ~2.5V to 5V). Using a freshly charged set of 2100mAh NiMHs, I was able to charge my LG Optimus S ~24% (3.7V Li-Ion, 1500mAh) before the batteries themselves die completely. That gives an overall charging efficiency of just ~25% (again expected since there is so much conversion inefficiencies in the process...)
Overall, good for emergencies, although not very efficient at all (gives out heat and burning plastic smell)... If you don't mind those, then this is a good deal. :)
13 of 13 found the following review helpful:
Needs some hammer adjustment Sep 27, 2011
By Valery
I googled here when tried to find out why my charger (the same, but from another retailer) became burning hot when I tried to charge Samsung Galaxy S using AA NiMH batteries. Reviews here clearly show that this charges is recognized as a standalone dedicated power source, not a USB-compliant charger. 2 USB data pins are responsible for that - if they're shortened, the device sees this charger as the one capable of delivering up to 1.8 amps, which at 5 volts results in 9 Watts, and given that we use AAs it means that the current of more than 3 amps (closer to 4 in fact) may be drawn. 3..4 amps is way too much for the batteries and for the step-up converter making 5 volts out of 2x1.2, and that's why they (batteries and the circuit inside the charger) become really hot.
I modded the charger a little bit. Do on your own risk, no special skills required.
I just used tweezers to break away one of the data pins inside the USB port on this charger. If you look at the port, you'll see 4 pins. Two outer ones are power, two in the middle - data (no actual data of course in case of a charger). As I said, I broke off one of the data pins (first pry it up to release the outer end, than sway it from side to side until it breaks at the base). Then I carefully removed all bits and pieces from the port, made sure that under no circumstances the remaining stub will get in contact with the corresponding pin on the USB cable, and here we go: now it charges my Galaxy S all right, because the phone don't anymore think it's a powerful charger and don't try to draw higher current than allowed by USB specs (5V, 0.5A). Charger is lukewarm (just cool compared to how hot it was before). The phone says "USB connected" now when I connect the charger... before the mod it did not say anything just started to suck the juice rapidly, overheating the charger. It works fine while I'm writing this.
I could not pry open the charger itself without damaging the case, so I could not just use the soldering iron to mod the charger in a more civilized way.
Good luck !
17 of 19 found the following review helpful:
Great little charger - Great deal! Jul 19, 2010
By Sandiamom
I have never before reviewed a product, but this product MUST be commented on!
I purchased this little charger to charge my iPhone while camping. I could not find any other reasonably priced products that would accomplish the task so figured I had little to lose if it did not work...
The product DOES work and works well. I recommend bringing lots of AA batteries if you will be gone for a while since it goes through the batteries after about two full charges, but it is compact and even has a pen light we used in the tent!
For the price, this is probably the greatest charger you can buy.
10 of 12 found the following review helpful:
 Works Well Jun 27, 2010
By Lylakk
This charger shipped quickly and was a great price. I use it to charge my ipod touch with its USB charger when I'm not around a computer or wall-socket to charge it normally. It works well, and even includes a built-in flashlight. I'm giving it 4 stars because the batteries seem to wear out very quickly, and constantly need replacing. Overall, a good buy but a battery waster. :)
See all 74 customer reviews on Amazon.com
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