Lol ugh that just makes it harder now cause I like the fuchai to n the name matches my fuhatten lol oh I'm using the batts that the dude had sold with his misfortune my gain awt 40a the yellow ones got mxjo 35a but heard the true reading is more closer to 25 n I drain that battery in about 4 hours I love the simplicity of a mech you hit button it fires no computers or chips like the box mods just push n got vapor lol just wanna be able to fire this set of coils safely from other threads this mech can handle both I just don't like the battery tube gets warm
mxjo are probably the worst batteries. Mainly because they mis-represent the battery properties. Example.. mxjo if you say they are actually 25 (I thought they were 20, but we'll call them 25) are listing the Amps at 40% HIGHER than the
actual "safe" constant discharge rate. Now where you use 0.25 ohm coil, you are fine, since a 20A battery pulls 20A at 0.21 ohms. (So still in the "safe" zone) *I quote safe because nothing is 100% safe. So "safe" actually means 'within acceptable limits'.* But.. imagine if you were cloud chasing, thinking you could do a 0.04 ohm build... and BOOM. As far as I am aware, 30A is the highest made. Perhaps the 40 amp cell is even worse, but i haven't researched those. Samsung 25R (or the newer samsung 5ta (?) will easily handle both of your coils. They have a very slow internal chemistry. I wouldn't chain vape on them below 0.12, but as long as you check the battery temp every 3 or 4 pulls, you should be ok. I am using a 0.06 ohm build (dual coil) on mine, and 3 or 4 hits is no problem, but you do need to let them rest 30 seconds between pulls. (don't try this on your batteries, and know what your cells can really handle before building low ohm builds. Again, mooch has the stress tests in his blog.) I won't say any builds are "safe" but used properly, anything above 0.15 ohm on a decent battery is "within acceptable limits".
Now of course the brand name batteries cost a little more.. ($2 to $6 more) but compare that to the price of your mod, and what could happen to your face if the cheap batteries go into thermal run and go boom... even $6 is pretty cheap.
The way I look at it, if a company has to lie about the battery specs, they should not be trusted. Samsung, Sony, LG, and Panosonic rely on their reputation for making quality batteries (when used and charged properly- I mean, good batteries can't account for stupid). Also, be sure you check your battery wraps, I usually check mine when I take them out of the charger. A small hole in the side can arc to the mod and bad stuff happens.(it would be like having the fire button stick, but worse) Battery wraps are about 15 cents each.. so I keep a dozen or so on hand in my coil building kit. (make sure the white ring on top of the battery STAYS on top of the battery.. that is an insulator.)
A lot of the ramp up time is just a matter of your coil build.
I use
http://www.steam-engine.org/ to calculate my builds. Very handy site.