Just curious what you'all are getting. My type 1 3.25 RMR just greeted me with a dead battery. Duracell, installed 11.13.18. This is one of my carry Glocks so it doesn't get shot a lot, just over 300 rounds on this battery. Can't say what intensity it was on, but I generally keep mine brighter. Seems like a bit less than what's expected.
Glad I have irons on this one. And many more Glocks, with and without RDS.