Question about Gingko smart book

I find the luminosity of the larger version much stronger. We use the larger version to light up an entire piece of furniture, and the smaller version as a small (but pretty) decorative element in a bookcase. The luminosity of both versions decreases when the battery is discharged. As soon as they are recharged, both versions shine brightly again - and because of the size, the larger version gives more light (personally, I like the larger version better).