IMR vs INR

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buck91
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IMR vs INR

I don’t mean to start a big debate but looking for some advise. I prefer unprotected cells in safe® chemistries. Currently I have a couple IMREN IMR 18650’s but I probably should look for some extra cells eventually. Would INR offer any benefit over IMR? The most demanding application I currently have is a 8×7135 off a single 18650, or possibly the Lumens Factory Turbohead (haven’t tested current draw)… at least for now. Ideally, I’d like to maximize the ambient temp tolerance as well since it could easily see below zero in the winter or 120+ in the summer if left in the car during a trip, though I only use primaries in my dedicated truck lights.

Sirstinky
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Not much difference between the two. Both can take high currents, are relatively safe.

Barkuti
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IMR is an old chemistry which is rarely used nowadays (LG HB4 & HB6, for example), being its energy density pretty low. Check this: Battery chemistry FINALLY explained @ Battery Bro.

Basically speaking all battery rewrappers using IMR are lying, or to be more precise, using such prefix as a marketing bait because they must believe battery layman people identifies IMR as high discharge. And that's all folks

Caring about the actual internal chemistry of batteries is irrelevant nowadays. Can't say completely for sure but most current production models are either INR-NMC, NCA, NCO or… LiFePO4.

buck91
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FWIW I ended up with some Samsung INR18650-30Q cells for $5/ea. Went with flat tops to fit some smaller lights and completely brain farted on my 2×18650 xhp50.2 turbohead. Oh well, less than $2 shipped on a multipack of neo magnets should do the trick!