Current pulled from the battery. High wattage and low resistance increase amp draw — stay within battery limits.
Amp draw rises when resistance drops or wattage climbs. Compare the result to cell CDR before you chain-vape on a stressed build.
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Amp draw questions
How do I calculate amp draw from watts?
I ≈ P / V. Enter watts and voltage in the Ohm's law calculator to see amps alongside ohms.
What happens if amp draw exceeds CDR?
The cell can overheat or vent. Lower wattage, raise ohms, or choose an appropriate battery — never ignore the math on mech hardware.
Educational glossary for adults 21+ only. Not medical advice. Follow manufacturer instructions and local laws.