SXmini Q Class Powered by YiHi SX450 chip
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Im so glad to find so many people in one thread who think that 200w (in a 2 battery device) is
a) unsafe
b) unnecessary for an average vaper
Though b) i feel is universal
a) unsafe
b) unnecessary for an average vaper
Though b) i feel is universal
the "but I'll never use 200w" mentality is a little unnerving. That's not really the point. I seriously doubt they designed a 200w mod under the impression that nobody would use it. If that was the case, they should've made it a 750w mod.
I tend to trust Evolv more than YIHI when it comes to the numbers and the safety. If they say you can't build a 200w mod safely using 2 - 18650s, then I tend to believe them. I have always really liked YIHI chips but their pattern has been to take Evolv's technology and improve it, somewhat. I have a hard time believing they've discovered a way to suck more power out of an 18650.
I tend to trust Evolv more than YIHI when it comes to the numbers and the safety. If they say you can't build a 200w mod safely using 2 - 18650s, then I tend to believe them. I have always really liked YIHI chips but their pattern has been to take Evolv's technology and improve it, somewhat. I have a hard time believing they've discovered a way to suck more power out of an 18650.
Im so glad to find so many people in one thread who think that 200w (in a 2 battery device) is
a) unsafe
b) unnecessary for an average vaper
Though b) i feel is universal
a) unsafe how?
Tesla cars have hundreds of 18650 batteries connectected together, yet they are safe if you crash the car at 60mph. When are you planning to crash your box mod at 60mph?
b) dual batteries give an average person more vape time per day, which is rarely needed, unless you crack open a six pack and start chain vaping like we used to smoke a pack.
At the end of the day, Yihi is giving users more options, while staying competitive in high wattage race to the top. Just look at Mercedes, they have more cheaper and more affordable vehicles than ever in every class.
Yihi makes a great chip, solid quality mods and people will buy the mod. Me, as it was mentioned earlier, it does look like IPV 4s, so i wont be buying it. Yihi needs to come up with a better design.
Take the ML and extended in the back so it fits a second battery and you have a good and solid dual battery mod.
Unsafe, as with 200w you're exceeding the cdr of even the LG hb6 and sony vtc4.
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It does look like IPV 4s but, I highly disagree.
Ive been using Sig 100 Plus for over a year. Its a dual battery box mod. The only thing that made it bearable.... is the silicone sleeve. My friend has a IPV 4s and its much more comfortable in hand then my Sig 100 plus. I would have bought IPV 4s no questions asked if i wanted a dual battery mod, because its a great mod and it feels nice in the hand. But, i wanted a single battery mod.
Got to play with IPV D2/D3 and few small DNA mods, at the end of the day i was sold on SX Mini ML. I paid a lot more for ML but, i also got more with ML.
Every ones tastes is different so YMMV.
There are a dozen 200w box mods. DNA has a reputation to uphold, i highly doubt they want their customers to end up in ER and a line with lawsuits at every court room.
A 260w box mod came out a year ago and i havent heard anyone blowing the moon out if its orbit.
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Thanks for answering before i could
You just saved this thread from one of my rants
If the kids would only do their battery safety knowledge research, and then get off my lawn!
I think you misread my post
I said: 200w (in a 2 battery device)
I did not say anything bad about a 2 battery device. Id buy one for the extra battery life, i was pointing out the safety issue in declaring a 2 battery mod capable of 200w, its bunkum, unsafe and shouldnt be marketed as such.
200w from 2 18650's is unsafe, and what at least im saying (wont speak for anyone else) is that with all the powers that be trying to close down vaping, mods shouldnt be marketed as being 200w capable, when we know its not safe and anything safety related is a clear own goal to those with the power to close it all down.....because the centre point of their argument is safety. Its insane not to realise this. Vape gear manufacturers are willing to say anything to sell gear and ironically put their market in jeopardy at the same time. They need to stop the madness, call a 200w dual battery mod a 130w and safe mod......
Thanks for answering before i could
You just saved this thread from one of my rants
If the kids would only do their battery safety knowledge research, and then get off my lawn!
This isnt a Mech mod. Chips are designed by engineers have foreseen and tested for all unforeseen issues that newbs may try to blow them thelfs up even with chepo batteries. At the very least, if newbs use cheap batteries, then the mod wont even fire at 200w. These newbs then will end up here on the forums, asking us which batteries they should be using for 200w mod boxes.
As an engineer myself, i would place safety barriers on high wattage mods or high power anything for people that dont know any better. This will avoid any and all law suits.
Not really, the VTC4 has a cdr of 30A, so that can give about 222 Watts with a dual battery config. Further, we're not using the battery in constant discharge, but more of a pulse configuration. Given that the VTC4 can support a pulse discharge of 60A for under 30s, it likely can handle it even if the batteries won't last very long.
200w, two batteries, is about 35 amps (90% device efficiency and 3.2v cutoff).
200w(*1.1) / 6.4v (two batteries) = 34.375 amps
Sure, that doesn't exceed the cdr by much, but designing a device to exceed the safe parameters of the best batteries out there isn't responsible.
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At the end of the day, the fault will fall on the battery makers.
You and i know for a fact that there are batteries that are falsely advertise its ratings. If such batteries (3000mah 40A) fail in a 200w mod at 200w, then you can sue the battery maker.
The mod maker that made the 200w device, knows for a fact that their mods are safe at 200w, just as long as you use capable batteries.
But, the mod makers by law, cannot recommend which make and model of batteries you should be using. Thats like car maker telling you which brand air filter to use.
Sort of agree with you, in that the chip can handle a lot of safety issues. Even more if it has a temperature sensor on the batteries. However, that doesn't fix the most common reason I've seen for people being injured by mods, which is that they aren't designed to vent properly if the battery fails.
/facepalm
When you turn 18, by law you a considered an adult. If you cant make adult decisions, then the fault lies on you and not the mod maker.
God gave you a brain, i suggest some of you start using it, instead of relying on big giant warning signs written on every hot cop of coffee...McDonalds hot coffee law suit reference.
p.s.
Makes me wonder how many of you have lived that long, if you fear so much of so very little.
Typically industry calculation is to use around 3.7V, not the cutoff voltage. Also, the CDR is only for constant discharge. Batteries can safely support higher discharge rates for short periods of time without being unsafe.
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Lack of vents is a good point, i cant disagree with it. There is also lack of detailed info about the batteries that went up the flames. The batteries could have been defective, no way of knowing at this point.
If you want to know for a fact that a mod is safe at 200w, then use a dedicated, reliable AC to DC power source on a 200w mod. This will eliminate batteries out of the equation.
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