This is a great light to keep on a window sill by your bed or situated in your car so it can receive at least passive light. I keep my on a window sill that gets no direct sun & it still puts out a very decent amount of light. I can not speak to its run time at full power but I'm a big fan of solar light as I feel like I'm getting it for "free". Also, at this price its a no-brainer.
Bottom Line Yes, I would recommend this to a friend