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

ASIN	B003BYROUQ
Additional Features	Lightweight, Portable, Sturdy
Batteries are Included	No
Best Sellers Rank	#26,448 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #3,392 in Cell Phone Chargers & Power Adapters
Brand Name	Eton
Color	Red
Customer Reviews	4.3 out of 5 stars 4,196 Reviews
Finish Types	Red
Global Trade Identification Number	00750254804403
Included Components	Flash Light, Usb Cable
Item Dimensions D x W x H	6"D x 1.25"W x 2.25"H
Item Dimensions L x W x H	1"L x 2"W x 6"H
Item Type Name	American Red Cross Clipray Crank-Powered, Clip-On Flashlight & Smartphone Charger, Red
Item Weight	4.9 Ounces
Light Output Maximum	100 Lumens
Light Source Type	LED
Manufacturer	Eton
Manufacturer Part Number	ARCCR100RSNG
Manufacturer Warranty Description	1 year parts and labor.
Material	Plastic
Material Type	Plastic
Model Number	ARCCR100R_SNG
Mounting Type	Clip-on Mount
Number of Light Sources	1
Power Source	Manual
Runtime	10 minutes
Set Name	American Red Cross
Shape	Rectangular
Size	Single
Special Feature	Lightweight, Portable, Sturdy
Style Name	American Red Cross
UPC	724137347110 066519357332 750254804403 080137116898 666671449403
Unit Count	1.0 Count
Voltage	5 Volts
Water Resistance Level	Water Resistant
White Brightness	100 Lumens

Eton American Red Cross Crank-Powered Clipray Clip-On Flashlight & Smartphone Charger, Hand Crank, Cherry Red, Commitment to Preparedness

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