bought a 2x18650 light for my friend and need some batteries for it, i lent a pair of my 18650's and they're still going after 5months so i think primaries would be fine, so avoiding chargers and stuff. whats the best value cr123 primaries in the UK? i dont mind waiting from china if they are good batteries.
Can't help with sourcing 123s, but watch the voltage (or be prepared to drop in a dummy 18650) with that setup. The dropin may or may not be able to take it.