- Weight: 1.44 ounces
NEEWER Portable AA Battery Powered Emergency Charger with Flashlight - Black - For Apple iPhone 4
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- For iPod, iPhone and any other devices that are charged through a USB cable.
- Quick charge time! Slim and portable design.
- Easy to use - Just plug and charge.
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Top Customer Reviews
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.
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).Read more ›
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...Read more ›
Most Recent Customer Reviews
Good build/design and durable, however just remember, 1 AA has about 2100-2300 mAH of usable power on average, and this takes 2, so maybe it will give you phone a full charge,... Read morePublished 7 months ago by Cannon McCall
HUGE WASTE OF MONEY!!! I bought this for an upcoming trip and the only thing that works on it is the flashlight feature. I tried it on multiple devices and it doesn't do anything. Read morePublished 13 months ago by DOB5589
This product never worked. Batteries didn't actually fit in it. Would not recommend.Published 13 months ago by Zoe Germano
Does not work tried with several battery's but still didn't work don't buyPublished 14 months ago by Kindle Customer
DOA. The only thing that works on this is the LED flashlight. Tried charging several different phones and it just doesn't work The battery compartment was so tight and so cheaply... Read morePublished 17 months ago by 3wire
This product is Chinese junk. It worked one time and that was it. If you were to use it regularly, it'd cost an arm and a leg for batteries. Read morePublished 22 months ago by Jim
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... Read more