Owned a Crafty since middle of 2015, never-ever seen an update issued for the App on iOS? Since Apple frequently updates their iOS, which could cause problems with useability of the Crafty app, why doesn't S-B issue updated App versions? Have been off of FC for about 5yrs, wish I had read the problems about the Crafty b4 buying 1. I had to buy a 2nd Crafty when the 1st stopped heating (everything else seemed 2b working in the read out on the app), couldn't wait for S-B to repair under warranty. 1st unit started to get battery too hot warnings more frequently b4 it just stopped heating. I would guess given how hot the whole unit & battery were getting, the battery may have just died from excessive heat, app showed mid 30+hrs use.
1:20min into this vid:
shows an AQPAK labeled/produced battery of 2700mah, 10A max continuous discharge rate (CDR). I know there are 3000mah, 20A CDR batteries that would likely be superior(higher CDR usually means much lower internal resistance, battery doesn't get as hot under high-current discharges, longer life cycles) to this German made battery pack. Can't contact S-B engineers or principles at the company to ask Y they have not implemented a fix for the battery overheating probs ppl r having.
There is also a 3400/3500mah Sanyo/Panasonic 18650 that has same 10A CDR that would at least give longer vap sessions, if S-B used that.
Wish S-B would designate authorized service centers for battery replacement, so I could contact said 3rd party service centers and ask them to replace, out-of-warranty/voids warranty, with better performing batteries/make up a battery pack with the required thermosensor shrink wrapped, etc. This is a no brainer, but S-B seems a company that doesn't take input from customers. I get nowhere when trying to get S-B USA to reply to these concerns.