I bought two of these and put both through crank and USB charge test. They were discharged to the point where I could just barely see the lights, when switched on, and each was given a two hour USB charge. Both provided 23 to 26 hours of radio usage. After the radios cut off, each provided 12 to 24 hours of light. I performed this test several times and one FR1 out performed the other. The radios seemed to last about as long on each, but the lights lasted longer on one FR1 much longer than the other one. I opened them up to see if there was any noticeable difference and I did not see any. The battery had this description on it: ICR 18650 2000mAh 3.7V 1605. It has a harness and plug. If you replace the battery you will need to transfer the plug to the new battery. As best as I could tell the battery includes the over charge and discharge pcb on it. A possible replacement might be: Tenergy Li-Ion 18650 3.7V 2600mAh Rechargeable Battery module with PCB and Bare Leads $9.99. I have not tried this yet. (Just a best guess.)
A two hour crank on a discharged FR1 provided 0 hours of radio and 15 hours of light,
A four hour crank on a discharged FR1 provided 10 hours of radio and 25 hours of light
If you would like to see the two machines I used to crank these, you can see them at:
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I would have given the FR1 a 5 Star rating, but there is no on/off switch. I have not determined the discharge rate when not being used, it has to be very, very small. However it does mean that you need to keep it maintained more frequently. Overall a nice, well built product.

Not impressed. I bought this about a year ago. Today, I opened the box up and was able to get the radio to work for about 15 minutes before it went dead. I figured the batteries were not charged, so I cranked it up and it worked for a few more minutes and then pooped out. By now I figured that the batteries needed a good charge so I plugged in the usb charging cable and allowed the unit to charge 3 hours. After charging the radio refused to work. Ok, now I think, the rechargeable battery is kaput, so in I put 3 AAA batteries (you can't fault Eton for their options). You would figure as a last ditch effort, the AAA's would do the job, but still nothing.

Ok, so now it's time to call Eton.....YUK! Perhaps they have 1 1/2 people working the customer service lines because, the trusting sole that I am, I left my phone number when I was promised a call back later. Well, it's much later and no call, no answers and no working radio. Call me crazy, but if this the "best rated emergency crank radio" I'm in big trouble if there is ever a disaster. If anyone really works at Eton, please call me.

Nice features, well designed wit h solar pannel on top to charge; hand crank to charge. USB and the smaller plug for phone charging. Speaker doesn't sound too bad. Nice flashlight and emergency flasher. I think they thought of everything this time, or until new technology changes everything.

This is just what I was looking for in a outdoor radio. It's got a crank to charge itself and/or a cell phone (anything with a usb charger), along with an aux input for music. This is effectively infinite power for speakers and a phone to play music from. I ran the radio at full volume for almost three hours on a full charge of the rechargeable batteries, although I haven't used any aaa in it yet. Recharging through the usb cable is simple and the handcrank seems easy enough, it also has a solar panel but it doesn't seem to add much power.

Seems functional. Two complaints: (1) For charging, it uses a USB 2.0 Mini connector rather than a 2.0 Micro connector (the kind used for your Android phone and most other recent USB chargeable devices). This means I have to keep one more charging cable stashed with the supplies. (2) There is no charge gauge, which I know is not expensive to add, as even my budget no-name external USB battery packs have simple LED charge indicators.

Basically, the tech is several years out of date, and the design has not been updated. For maximum functionality, I would suggest a more recent design, probably at a bit higher cost.