Thanks for the replies.
Even though the prices are good, liionwholesale.com don't seem to be shipping to Europe. So I'll probably order a better battery from some local shop, knowing how bad the current ultrafire is.
Can the batteries from Sanwu be trusted or would you go for a branded one in...
My second ever laser arrived (the first was a tiny <5mW 405nm pen).
Ordered it from Aliexpress at around $15, it's one of those Laser 303's hosts with a 532nm DPSS running on a single 18650, 4200mAh 3.7V.
My question is:
What do you think is this laser's actual power?
After (in some cases...