I get the highest capacity battery I can afford so I don't need to carry several spares. Usually charge them every couple days, and have not had any quit on me. Even buying top quality cells it's still much cheaper then buying alkaline batts. Using 3 $6 batts to get the runtime of a $18 batt not worth it dying and having to change it when the time might not be convenient (murphy's law). Some of the knockoff's still perform great, but I am not willing to roll the dice and see what capacity I end up with when I know what I could of had. Oz's equal Lbs, and lbs equal pain, carrying best gear I can afford and saving some weight is what I stick to. Having to walk a mile in the rain at night like TLM just did, I am not willing to have a batt cut out because I saved a few dollars but no worry I have a pocket full of them so I can change them while it's raining. If you hunt out of a vehicle and have them laying around not a problem, I like walking/stalking the best.