NO! Batteries in a dual battery mod MUST be the same brand and have the same specs! They must be a "married" pair as well. In other words if you have 4 batteries total you must use the same pair each time you swap out. This is done by numbering the batteries 1 and 1 is one pair, 2 and 2 is another, or you can use letters or shapes, but the same two batteries must be in the mod at the same time. If you had or have two Aspires and two Basens then you'b be okay, use the two Aspires together and the two Basens together. But that's not what I'm getting from your post, you said you only bought two, not two of each. Oh, and another thing, that 40A rating is not for constant draw, that's pulse draw only. Nobody makes a constant draw higher than 30A currently.