Hey Trevi_lux,
Thanks for doing the testing. Yes, I do use the electronic lock out on the Mi7. I haven’t needed to lock out the Manker as the button is recessed enough so that when it’s clipped into my pocket, it has never accidentally turned on.
BTW, I also have a Klarus AR-10 and Olight SR10 II. I use electronic lockout on both of them and have not had issues with parasitic drain. AR-10 had been in my backpack for several months and still has good battery life. The SR10 II’s been on e-lock for at least a month and still reading 4.04v in my charger (sorry, no DMM at work).
Thanks! Just wondering if it is plausible that you’re going to get a much different value when testing with NiMH. Obviously you will because the voltage is different, but perhaps the efficiency may be of a completely different order. With 14500 it’s 777 microW (=185 x 4.2), but is this the same with NiMH? Would you be so kind to test it with NiMH as well? Thanks!
Although your conclusion that you have a lemon is unfortunately correct, you used wrong parameters. Capacity for NiMH should be 2000 or 2500 mAh; you used a value for AAA instead of AA.
I guess it depends on your perspective. For my purposes as an EDC light, 6 months of stand by is more than sufficient, since I use it daily and will run down the battery long before 6 months elapses.
If, on the other hand, I was putting it in a survival kit, I could see that being an issue, but then again, if it was in a survival kit, I would engage physical lock out. Furthermore, I usually check my gear more frequently than once every 6 months.
I wonder if the drain is constant regardless of voltage? The numbers seem quite close. I seem to recall there were devices that drew constant current and adjusting input voltage changed power consumption on a linear scale.
Mine has horrible parasitic drain, but it’s not typical. I got a dud. If you look at the table I created, based on the data maukka provided on his light, using AA NiHM, the parasitic drain would take 20+ months to deplete the cell.