if mods where to show amps more prominent then watts,would that make people more aware of battery limits?i use to be RLH but moved on to DLH,never mtl.do not want to say watts someone might call me a tootle puffer.
The readout of a regulated mod shows the remaining battery life by measuring the remaining voltage in the cells.
Onscreen information on volts and amps is what is being delivered to the
atomizer, not what is being drawn from the
cells. The regulator chip separates the atomizer side from the battery side, uses an algorithm to calculate the correct balance of amps and volts to generate the selected wattage and deliver this to the atomizer. It then draws what it needs from the battery side.
The mod
can measure the remaining voltage in the cells, but it
cannot know what their amp capabilities are. This why as the user you need to be familiar with how to calculate the amp draw from the batteries at your selected wattage level, and ensure that you have appropriately rated cells. Bear in mind that the mod will blindly draw an increasing number of amps from the cells as the voltage in them drops off.
I suppose it's possible to program a chipset so that the user can enter the known tested CDR of the cells they are using. The mod could then do the necessary calculations for you. No company has done this yet.
I have included a link to an article describing the simple maths you need to calculate amp draw on a regulated mod. The basic rule is that a 20 amp battery is good for 60 watts, 25 amp 75 watts and 30 amp 90w watts. This is assuming that the batteries are correctly rated and genuine, and are not worn out as amp limit falls with age and abuse.
Ohms/Watts Law - Calculating safe amp usage | E-Cigarette Forum