Originally Posted by forcedfuel50 I've actually been setting the PrecisePlus 18500 up based on what batteries they intend to run in them (the shopping cart has a drop down menu so you can choose IMR 18480 or P18500 battery set Up). You can change the setup to run either. Heres the setup, so keep this post in mind for later quoting and reference: PrecisePlus 18350: - When running AW IMR 18350 (only battery i recommend for it). One .100 thick Oring under the battery and one washer ...