Battery understanding for mech mods and low ohms

[erawtik]

I just picked up a mech to experince the lower ohm coils. Iv been reading that everything is dependent on what battery you have to determine how low your coil can go safely. I have aw 18350, efest 18350, pink 18650 out of evic, and green Panasonic ncr18605b. I use the 350s in my provari and would rather use the 650s in the mech but if the 350s are better, then whatever. So could someone tell me the lowest ohms I can take these battery's safely, and then tell me how you figure this so I know for myself. I have ohms calculator bookmarked but not 100% sure on everything here and don't want to blow a batt so rather ask first than be sorry later.

 

[Scholar]

To find out if a build is safe, you need to know the maximum discharge rate of your battery and you can use Ohms Law for the rest. To find how many amps a coil build draws, divide the voltage of the battery (fully charged, not nominal voltage. Most 3.7v batteries read 4.2 on a full charge) by the total resistance off your coil build. E/R=I (voltage divided by resistance equals amperage). As long as the amp draw is below the maximum discharge rate of your battery, you're good. I generally tend to try and stay at least 5 amps below my max discharge rate. Now into the batteries.

AW IMR18350 -Max Continuous Discharge: 6A
Panasonic NCR18650b -Max Continuous Discharge: 6.8A
Efest 18350 -Max Continuous Discharge Rate: 6.4A

I haven't been able to find anything on the Efest or the Samsung from the eVic yet. Will edit when I do.

I highly encourage you to do your own research and not take my word, or anyone else's word for it. Your safety is something you should trust to nobody but you.

 

[soulcatcher]

+1 @Scholar
I would def consider getting either some Efest 30amp 18650's or Sony 30amp VTC4 / VTC5's. 18650's are going to allow you to safely use lower ohm coils vs 18350's which will have a much lower max amp draw.

Here is a great calculator for determining amp draw (Thx SteamEngine) \/ \/ \/ \/
Ohm's law | Steam Engine | free vaping calculators

 

[anumber1]

Don.'t use that pink samsung from the eVic.
It is an ICR chemistry battery. Not suitable for a mechanical mod and really not suited for vaping as there are many safer choices. I know it came in the evic and is just fair for that application as an evic is a regulated, 2.5 amp device.

IIRC that samsung is a 4amp max battery. Only good for use in the eVIc (and just barley in that application).

Your best bet is the Sony 30 amp batteries. The US18650VTC4 is 2100 mAh and cheaper than the US18650VTC5, which is 2600 mAh. Both are 30amp batteries.