Spare 16340

I’m looking for an extra 16340 for my Olight S1R, are there any that hold a little more juice or should I go for a spare Olight brand battery?

Olight S1R’s battery is a customized 16340 with both contacts on the same side…
You won’t find a better capacity replacement, standard 16340 will fit but you won’t be able to recharge them in the light.

OK, I guess I’ll go for a spare Olight battery then.