The Reo Mini, Grand, Woodvil, has no low voltage cut off,,, it is an all mechanical
mod,, so it has no electronics in it at all rc10mike. The
batteries you posted wont work in the Reo Mini,, nor the booster. The only Size Batts that will work is the 14500, and the AW is the best IMR 14500 Battery on the market for this Mod. If you want circuit protection the man ( Rob ) who makes the Reo line of Mods is coming out with the variable voltage Reo Woodvil next week & & Reo VV Grand soon after,,, both of these Mods have a built in protection in the circuitry, and also will run on 18500 Batts. This may be a better selection for you than the Mini , If you can get your paws on one of them that is. Beginner or not, sounds like you may be ready for this Mod YMMV but I find the VV Woodvil the very Best of the Best of the Reo Line, and sure the Reo VV Grand will be right there if not better. Just my 2c on this by the way your talking and since you know RC stuff and Batts and Electronics, your gonna pay a little more for these, but you already know how that is with RC Toys, you get what you pay for