Ledlenser P5R/P5R.2 BatterySpare or replacement battery for the Ledlenser P5R.
I've used this battery in my P5R.2 for about 9 years. I get about 2 years of use out of the battery before it needs replacing. I don't know if this is about right or not as I don't have anything to compare it to. But, for as much as I use my flashlight even with replacing a $20 battery every two years, it's still cheaper than AA or AAA batteries.