The biggest crap you are facing is the SMOK TFV-XX style tanks (TFV8, the new TFV12, etc). Don't get me wrong, SMOK make some excellent devices, mod wise that is, its their recent generations of sub-ohm tanks that are the problem, namely in the coil heads for those tanks and the power requirements to make them function. The Baby Beast tanks are a somewhat exception to the rule as they function just as fine in the median watts range (50 to 90watts) where their other tanks need massive power in the 100+ watts range, so you have a trade off of power needed at the sacrifice of battery efficiency and safety if you are not careful and pay attention. If you need to run your tank at 75+ watts and the tank is your preferred tank, you yourself need to balance the size or type of mod to power that with a small and compact design as well as ample power to get the job done.
An analogy and question to make you think about this.
You buy a highly expensive, performance designed super-car that can do 200mph.
What happens to that expensive car if you drive around from home to work every day red-lining it to the maximum speed it can do, what are you doing to the motor/engine?
The motor of a vaping device is battery(ies) and the mod control board, stress them constantly at maximum performance eventually like the super-car motor above the motor is going to destroy itself from the abuse. (Mod control board is added in if you take into account how much system maintenance a PC gamer does with a super over-clocked motherboard and graphics card, the boards wear out from all the heat and stress maxing them out does.)
In the above analogy is the balance point of when you need another battery in the battery circuit, if you are needing to run that Baby Beast and 70ish plus watts, there me personally I switch to a dual or triple battery device, each battery decreases stress on all the batteries together.
