I am interested in using 3.7V 3000mAh 18650 Li-ion AAA batteries (e.g. EBL). However, users indicate (reading the reviews) that those batteries are not the same size as traditional AAA.
I was going to purchase a standard AAA holder (e.g. 4 X AAA Holder), but now I am starting to doubt if these batteries will fit the holder.
Does anyone have any experience with 1850 batteries + holders? I am trying to externally power an Arduino project with them.