Tiablo A9 Q5 and 18650's

[Dr.K]

I have been reading some, and I see that the 18650's are used more in the A8.

I just ordered an A9 Q5 and I see that the 18650's are one of the recommended batts on batteryjunction.com. So, I ordered some of them.
Should I have ordered Rcr123's?

I think it has to do with the regulation, but could someone explain?

The doctor thanks you,

 

[Nitro]

I have been reading some, and I see that the 18650's are used more in the A8.

I just ordered an A9 Q5 and I see that the 18650's are one of the recommended batts on batteryjunction.com. So, I ordered some of them.
Should I have ordered Rcr123's?

I think it has to do with the regulation, but could someone explain?

The doctor thanks you,

Yes it has to do with regulation.

The A8 w/18650 has flat output for 90mins. The A9 w/18650 has downward sloping output for 180mins.