Energy Supply Vs. Vaping-Management

There two different types of battery mods on the market:

  • Unregulated or mechanical battery mods
    This type has no protection circuits and no voltage and/or current regulation. These devices are quite complicated and require knowledge and experience with li-ion battery cells.
  • Regulated battery mods
    These mods are equipped with protection and regulation circuits. The user can adjust different settings such as energy (Watt), Voltage (Volt) or internal resistance (mOhm)

In both types of devices it is required, that the user will adjust the stressed performance of the li-ion cell with the technical specifications of the li-ion cell. The selection of the right li-ion cell depends on the vaping-management of the user. For this reason we never refer to the “best” battery cell, but to the most “adequate” or “suitable” cell, and this decision is individual.

This raises two issues:

  • At what voltage one measures the load? At 4.2V (fully charged cell), or rather at 3V (almost empty cell)?
  • From what efficiency-loss in the battery mod should one act? Is this already taken into account by the manufacturer of the battery mod, or does this loss still have to be calculated “on top”?

In this table we show different scenarios to demonstrate the issue. We presume an average efficiency loss of 20% and calculate the required load under different aspects:

Energy of the
battery mod
Load at 4.2V  Load at 3V With consideration of
efficiency loss (20%)
 10 Watt  ca. 2.4A  ca. 3.3A ca. 2.9A – 4A
 20 Watt  ca. 4.8A  ca. 6.6A  ca. 5.8A – 8A
 30 Watt  ca. 7.2A  ca. 9.9A  ca. 8.7A -12A
 40 Watt  ca. 9.6A  ca. 13.2A  ca. 11.6A – 16A
 50 Watt  ca. 12A  ca. 16.4A  ca. 14.5A – 20A
 60 Watt  ca. 14.4A  ca. 19.8A  ca. 17.4A – 24A
 70 Watt  ca. 16.8A  ca. 23.1A  ca. 20.3A – 28A

Notes:

  • This calculation refers to one cell. It means that when the battery mod has for example energy of 150W and is operated with 3 cells (parallel or serial play no role here), it must endure a load of 20A.
  • The table above demonstrates the continuous load of li-ion cells in a battery mod. We presume that no vaper in the world “drags” permanently. For this reason the technical details, which are provided by the manufacturers of li-ion cells, and refer to merely a hypothetical maximal continuous load, should be considered merely as general framework. More important, to our opinion, are the external measurements, field reports and professional forums.
  • Li-ion cells are consumer goods and lose their efficiency with time. When choosing the proper li-ion battery cell, this fact must also be taken into account. When one brings his li-ion cells to the limits of their efficiency, must replace them more often.

© Photo by courtesy of Vaping360

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