Ordered some spare parts and a dosing tray. Really, dig this vaporizer. Packs a nice punch. Effects can wear off, but a couple chambers on this and effects are right back. No warm up needed. I will say best performance when battery is above 3.9 to 4 volts on my charger. The 30-40 batteries I'm using charged (added) 2400 mah on the first charged to whatever they ship at. From there, I drain about 5-10 chambers then recharge. Seems that is, and I'm using, about 1400 to 2000 mah between charges. Unit still works when battery gets lower, nice clouds, but a fresh battery is noticeably better...
And as others said, my favorite part is that the smaller, five, chambers allow a super tasty session.
You can literally hear material pop, sizzle, and crack once or twice on some crucibles. The wood doesn't muffle little things like this. When u hear it, it's a sure sign of a dense draw...