Charging the tea lights is simple - and a battery charge is keeping about 14 hours. For me, a very good value.
The candles themselves are not just eye candy, but because they are not intended for the 'naked' use, that's probably not a real complaint. Inserted into the lens frames, the light can then virtually no longer at distinguished from a 'real' tea light. The flicker effect is extremely well implemented, the luminosity is perfect - only the color is, as noted by others, just a little too yellow.
In short, we have already tried so many LED tea light and these ones are so far the best by far!
And yet, for the fifth star just lacks a little more. The color is a slightly better note, make the 'naked' tealight a little less ugly .. then Philips deserves from me the last star to perfect illusion.