Battery temperature

[sonicbomb]

I have a single coil 0.6 ohm build on a sigelei 30W tube mod, running at 30W with a new Sony VTC4. After a couple of 3-4 second hits the battery starts to get warm, not hot but noticeably warm even through the mod tube. This setup is pulling about 8 amps which is well within the Sony's limits.
I'm relatively new to sub-ohm builds and I'm wondering if it's normal for the battery to get warm like this? I recently had an accident with a battery and I'm feeling cautious.

 

[chav]

As long as there are no shorts and your ohm reader is accurate you shouldn't have issues. It's normal to get a little warm, but not hot. I've had issues where my RTA will get hot and the top's of my mod as well. It could just be because you're pushing the full 30w through it too.

 

[sonicbomb]

That's reassuring, thank you. So I would imagine that a build that pulls closer to the batteries amp limit would get exponentially warmer then?

 

[SunshinePete]

Not exponentially, the current/heat relationship should be linear unless there is a battery fault.

 

[Rsunderl]

Hisonicbomb and welcome aboard!

I'm not even sub ohming and my battery gets very slightly warm sometimes when I'm vaping heavily.

Hope that helps and Happy Vaping!

 

[realsis]

You should be ok as long as your not exceeding your batteries Amp limit. With the numbers you gave me, that's about 7.07 amps. Your batteries a 30 amp limit. You should be well into the safe zone. If you ever question the limit, use ohms law formula to see exactly where your at. If you don't like math, there is a great app called Ohms Law that will do the calculations for you. Hope this helps. Best wishes.

 

[sonicbomb]

I use the steam-engine org below for all my calculations. Amps at the atty are 7.07, amps on the battery are closer to 8, I'm guessing this is related to the efficiency of the mod.

 

[Ezah]

If you feel it after 3-4 second THROUGH the tube something is DEFINITELY wrong! Do you have all contacts clean? Threads, spring, positive pin... Are you sure the resistance is 0.6 ohm? Is there no short on atty pins after cap installation?

 

[Dampmaskin]

There's a big difference between warm and hot. Are you sure the heat you're feeling isn't coming from the atomizer itself transfering heat to the mod?

When the mod gets warm, take the battery out. Is the battery hotter than the mod, or colder than the mod?

 

[sonicbomb]

I retested, and the majority of what I'm feeling appears to be heat being transferred into the tube by the hot RDA. When I quickly take out the battery it is barely warm at all. Unless the heat in the battery is so transient that its faded by the time I get it out. I suspect that I may have been a little over cautious, and if so my apologies if anyone feels like I may have wasted their time answering this thread.

Thanks