I don't see any reason why drivers shouldn't work ok at those temps.,but ALL li-ions really suck below 0C,mainly because electrolyte ionic conductivity drops drastically; here's some data for NCRA:
But I’ll have to. Those drivers look sweet!
When tracking is ordered, I’m assuming you provide tracking info by email or PM?
PP payment sent for 3 units, can’t wait!
PP sent for 4 drivers with tracking. Looking forward to receiving them.
PP sent for two drivers
Sorry,I forgot to add it (it was Friday:),tracking number added on PP.
PayPal sent for 4 drivers + tracking. Thanks Neven 
Yeah, its like that for Li Ion batteries
At temps under 10-15 degrees electronic components start behaving wierd, especialy sensor type ones, as an engineer in construction company i see it like every winter
Anyway, i didnt had any problems last night, the temp fell under –13
5amp driven U2-1A running at –13 degrees …start is at least at 1600lm 
WOW, sorry for the OT, but madmark, beeing a Member since 2011 and waiting for THIS Driver to get his first Post !
Do you sell expander boards now? Or plan on selling them soon?
PP sent for 2 drivers + tacking
thx
No,maybe next year:)
ALL SOLD.
(So please,do not send payments on PP)
Arghhhh… so i’m waiting for next batch.
Wow, that went quickly!
Got mine 2 pcs. today Thank You
DOnt send? Come on! Ask Banggood! They always said we have in stock , sure…and after you pay they start…actualy we have only 26 pcs….on second thoughs we have only 21 pcs….oh wait, we have 17 …jk ofc, but thats the very truth
A tiny copper piece on the mosfet helps alot though
A tiny copper piece on the mosfet?
Explain, advise, recommend, warn about? Say more?
Any idea when you will have more of these?
Im also interested in your expander boards.