There's still an E01 in my laptop bag and my fiancé still has one on her keychain. Going through my e-mails, it looks like some of these are 15 years oldOld Man post warning... 🤣 Search around for a handful of Fenix E01's and get a multi pack of lithium Energizer AAA's. The E01's can still be found, and if you search here on CPF for runtime and torture testing, you'll know why I still own a few. Bombproof, simple battery sippers that anyone can operate. They're bright enough, cheap enough, and will outlive roaches in the next apocalypse.