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mikeybee

Bronze Contributor
Member For 1 Year
I'm trying to get into tube mech mods because I love how they look.

Now I used a steam-engine calculator and it says here that if I use a coil with
- 0.20 Ohms (Im just planning to use pre built coils)
- 3.7 V batt
- Atleast 18.5a (in this case a 20a batt)
- 68W
It'll be fine?

Now that I know as a battery dies down it "sags" or it lowers in voltage. If it lowers in voltage as the battery dies down (needs charge), will it be dangerous to use, or will it just be simply at the worst, not perform as well? I just don't want it exploding in my face.
 
Last edited:

UncleMike

Bronze Contributor
Member For 4 Years
Fully charged battery is 4.2 ohms so always start there. So (V) 4.2 / (R) 0.20 = (A) 21 @ 88.20 watts
 

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