Review (1/5): Bad design
I've bought two of these so I could go camping and use a solar recharger for the batteries. The first one lasted for about twenty uses before it died, the second for about fifteen uses before it also died. These may be a good deal as far as initial price is concerned, but are obviously a terrible return on investment. Being able to replace the batteries is a great concept; it is a pity the execution is so flawed.