Kitchen Panda
Enlightened
I've changed my thinking on the non-replaceable battery front. If it's a keychain light used very intermittently during the day, that is just as likely to be lost or damaged as to wear out its internal battery, then the trade off of lack of serviceability might well be worth the gains in compact size and improved reliability. All my replaceable battery lights need periodic cleaning of the battery contacts. If it's a lamp used hours every day and is more likely to run out of battery cycles before it gets stolen, well, that's a case for replaceable batteries. Proprietary? Meh, I've got one spare OLIGHT battery for my headlamp and flashlight - for my very light service case, not sure if the batteries will wear out before I do. If I had dozens of 18650 lights I'd be more worried about proprietary batteries. I currently use a 9-year-old phone and an 18 year old iPod on their original non-replaceable batteries. I did have to replace the LiIon pack in my netbook after 12 or 13 years, and was glad it was user-replaceable. I guess not all of us are prepared for The Day when only our stock of hoarded lithium AA primaries is all that stands between us and the zombie army.