Question 1

Does anyone know the maximum and average output of electricity this device puts out while cranking?

Accepted Answer

I just measured it. At a decent cranking rate, with a load of a 5 amp/hour USB battery (intended to charge USB devices), it gives about 0.5 amps (2.5 watts), which is the maximum you get from a normal computer USB 2.0 port. If you crank really fast, it seemed to get up to about 0.6 amps. The voltage seemed to stay around 5 volts, no matter how fast you cranked, so seems to be regulated. This is a lot less than some USB charging bricks, which can deliver as much as 2.1 amps (10 watts). This also may be iffy at charging an iPad, although charging a separate USB battery and using that to charge the high current drain device may work (although my battery says 0.7 amp load maximum). The bottom line is you should expect charging rates similar to plugging your device into a computer USB port. There is crank generator device on Amazon for about $50 that claims to give 10 watts at 120 volts which you plug your AC brick into, although I don't own it so can't measure it's reality. You can instantly feel the resistance turning the crank for 2.5 watts, and turning the crank for 10 watts may take muscle and get tiring fast.

Question 2

Can this be used for an IPhone 4 and the newer versions?

Accepted Answer

On the company website it says:*Please note not compatible to charge iPhone 3GS, 4, 4S, or 5. http://www.etoncorp.com/en/productdisplay/clipray-1

Question 3

can this item be used to charge a hand held GPS device? i like to hunt and camp alot and im allways useing my GPS to find my car.

Accepted Answer

It has a standard UBS receptacle similar to a type 2 on a computer or laptop. I got it for charging a cell phone but I would think it should work for a GPS as well. I have tried it with my iPhone and it takes a lot of cranking to get the battery level to increase even a litttle so be aware of that. It does seem to charge but not as nearly as quick as I would have expected or desired. Hope that helps.

Question 4

Does this have a battery that stores the power?

Accepted Answer

Uh yeah for the flashlight but to charge something via the USB port you need to crank it while you have the device plugged in

Item model number	ARCCR100R-DBL
Product Dimensions	3.05 x 5.59 x 15.24 cm; 138.91 g
ASIN	B0188PGDOK

アメリカ赤十字クリップレイクランク式クリップオン懐中電灯とスマートフォン充電器 ARCCR100R-SNG ダブルパック

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