The whole premise here is wrong. Any flashaholic has back up and the ability to charge batteries anywhere. O light universal single charger and a power bank and you're ready. Relying on a Walmart for battery replacement is just poor planning. You should have a stockpile.can i buy a replacement battery at walmart? easy battery replacement is high on my list. I'm not opposed to rechargeable, i just want to be able to buy one if I'm out in the mountains and have nowhere to charge and need a new battery... it also looks a bit chonk. lol. the quark is pushing my limit for pocket carry. that looks pretty beefy... but awesome otherwise