Interested in a 18650 battery pack, 52v, at least 12AH but not too much more. Looking for something not outrageously priced, under $700. I'll be carrying the pack in a seat bag, so don't need a dolphin case. I rather like how small and light Luna's Mighty Mini Cube is. They used to have a 14AH version at 8 pounds that was more compact than their Wolf pack, but looks like they can't get any more from their supplier. About the only advice I see here on ES is "don't buy from Alibaba." No specific suggestions for recommended sellers. Regardless of seller, I'm going to charge only in the oven for the sake of safety.
I'd even be willing to pay a little more for a 21700 pack, but haven't seen anyone selling aftermarket packs using those cells yet.