![](https://lemmy.world/pictrs/image/812cece4-7ae0-4d83-806b-202b45848d7a.jpeg)
![](https://lemmy.world/pictrs/image/27811e0f-7996-4187-9484-c6d62dd9d85f.jpeg)
For sure. All mine are 1x18650 or 1x14500. 2x21700 is for when you mean it.
But if I was hiking across Antarctica, this is probably the headlamp I’d want. It even comes with an extension cable so you can wear the battery box under your parka to keep the batteries warm and happy.
I’m mostly against downvoting without explanation, so here it is: expressing this sentiment in this community without a really solid explanation of why you think it would actually help seems like trolling.