I have the two lamps for about 1.5 months on a regular basis (about 30 minutes per day, especially now in the winter time) in operation and now had to last week the batteries for the red tail lamp exchange (cost for 2 button batteries 5). The white front light has become much weaker and probably needs to be replaced soon.
Ansich but the lamp is very convenient (small and easy to install without bracket) but not really suitable at the battery power for a serious frequent use.
