LED candles have become for me to secure, yet pretty alternative. The beauty of these candles is the optics, they are made of real wax, see accordingly from genuine and also feel like that. Is not it in front of them, the trickery falls not to continue.
Only the candlelight seems a bit too artificial, because the candles flicker more reminiscent of a candle in the wind. It flickers permanent and if one puts together all 5 candles close, it will be a little restless image (unless you manage to fine-tune the Flackerintervalle successive ;-) so far I am not yet succeeded)
For battery life I can only say so much: The batteries supplied (per candle a button cell type CR2032) hold approximately 20 hours of running time yet, the candles still radiate the same intensity.
As the candles ausschauen in complete darkness, you can see on my photo.
Conclusion: If you want or need to pay attention to his safety, makes this an alternative to real candles nothing wrong.