NEW YIHI SX MINI ML CLASS!

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ThunderDan

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The duel battery stick actually isn't that bad. I use it daily. It looks much better in person.

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I use mine frequently too. Basically whenever I want to use a rda in power mode. I don't think I would go that far though, its pretty awkward.
 

ShowerHead

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Just spoke to a YIHI rep and she recommended me not to purchase the ML class if I've already gotten the M class.

The ML is essentially the M with support for more wires and comes with the SXi~Q software that allows users to select different modes and taste profiles.

Anyway, YIHI will be releasing a dual battery mod this coming christmas. Got my source from the horses mouth..
According to my Chinese wife, the meaning (not the translation of the words) of the reply to your question about software updates for the M class, is 'No'.
While you got it from the horse's mouth, you missed the barnyard etiquette of saying no without saying no directly.
 

Yozhik

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Yes, I believe they do that for higher wattages. If they tried to do a parallel 100w+ board they would probably have to do some janky pwm method like the iStick 100W.

Battery life is about the same either way, the Watt-hours are the same at least. Only thing is charging batteries in a mod in series requires a balance board.

One can do higher power with parallel batteries, provided that (a) the configuration of the batteries is known to the chip; and (b) the wiring and chip can handle the increased current. For example, the SX-350j-VF in the Vaporflask SX runs up to 100W (3.7V at 27A), because it's specifically designed to run two batteries in parallel and the chip can handle that current (max input is 30A). The form of power output by the chip is irrelevant by the way, it's all about what current the chip can handle from the batteries. For 150W input power, 7.4V at 20A makes for an easier board to design than 3.7V at 40A. Nonetheless, the latter can be done.

The reason that the iStick uses PWM is likely just to save on cost/complexity of their board (i.e., avoid the expense of a buck/boost circuit). Yihi's sx350J has buck/boost for Power mode (so no PWM), but they use PFM for a different reason on TC.
 

IanDVaypes

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One can do higher power with parallel batteries, provided that (a) the configuration of the batteries is known to the chip; and (b) the wiring and chip can handle the increased current. For example, the SX-350j-VF in the Vaporflask SX runs up to 100W (3.7V at 27A), because it's specifically designed to run two batteries in parallel and the chip can handle that current (max input is 30A). The form of power output by the chip is irrelevant by the way, it's all about what current the chip can handle from the batteries. For 150W input power, 7.4V at 20A makes for an easier board to design than 3.7V at 40A. Nonetheless, the latter can be done.

The reason that the iStick uses PWM is likely just to save on cost/complexity of their board (i.e., avoid the expense of a buck/boost circuit). Yihi's sx350J has buck/boost for Power mode (so no PWM), but they use PFM for a different reason on TC.
It's not the chipset's ability to handle the high amperage, but rather the ability to pull it. Lots of dual parallel dna40 mods out there. The chipsets pull less current than the batteries are rated for.
 

Yozhik

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It's not the chipset's ability to handle the high amperage, but rather the ability to pull it. Lots of dual parallel dna40 mods out there. The chipsets pull less current than the batteries are rated for.

Not sure I understand you, but to clarify my remarks - the board has an input current limit that cannot be exceeded, regardless of the voltage of the batteries. Some boards (e.g., sx350j, DNA 200) based on the voltage of the batteries (e.g., 3.7V, 7.4V, 11.2V), determines what power can be supplied by the board. Normally, those boards assume that there is no parallel configuration, so the voltage determines the output power that can be supplied by the board (e.g., 75W vs. 150W on the sx350j for 3.7V vs. 7.4V battery voltage). If the board knows that it has a parallel configuration, it can increase the current draw from the batteries to provide more output power, provided it does not exceed the input current limit of the board and the wiring. The reason for this is that current pulled from the overall parallel configuration is split between the batteries in parallel. Consequently, you can have something like the Vaporflask SX that's able to provide more sustained power output at 100W than a single 18650 version of the sx350j at 75W. Further, if the sx350j-VF chip could handle an input current of 40A, one could get pretty close to 150W power output on a parallel configuration.
 
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IanDVaypes

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You can run 10 18650s in parallel with the sx350j and dna40 if you want to. The amperage of the battery can exceed the chips amp input limit. The imput limit only refers to what the chip is capable of pulling the battery. The sx350 in the flask is just capable to pull more amps than the normal sx350 in order for it to buck the output voltage even more.
 

Yozhik

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You can run 10 18650s in parallel with the sx350j and dna40 if you want to. The amperage of the battery can exceed the chips amp input limit. The imput limit only refers to what the chip is capable of pulling the battery. The sx350 in the flask is just capable to pull more amps than the normal sx350 in order for it to buck the output voltage even more.

A properly designed a chip will not exceed its own limits. Thus, even if you could draw 50A from a battery package, the board will not do it if it is limited to 30A. Why? Because the board is not designed to fry itself. So if you want to draw 50A current at the same voltage, so you can increase output power accordingly, you need to design a board that can handle that current. You do understand that when current is drawn by a board, it does in fact need to be able to handle that amount of current? Otherwise, you get a board that melts, smokes, catches on fire, etc. and it's not truly capable of drawing a 50A current.
 

IanDVaypes

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A properly designed a chip will not exceed its own limits. Thus, even if you could draw 50A from a battery package, the board will not do it if it is limited to 30A. Why? Because the board is not designed to fry itself. So if you want to draw 50A current at the same voltage, so you can increase output power accordingly, you need to design a board that can handle that current. You do understand that when current is drawn by a board, it does in fact need to be able to handle that amount of current? Otherwise, you get a board that melts, smokes, catches on fire, etc. and it's not truly capable of drawing a 50A current.
I'm saying that if the battery exceeds the chips amp limits, it won't fry the board. It is impossible because it was designed to only pull what it's capable. You can put a 100 amp 3.7 battery on an sx350 but the chip will only pull a small fraction of amperage from it.
 

Lemwise

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According to my Chinese wife, the meaning (not the translation of the words) of the reply to your question about software updates for the M class, is 'No'.
While you got it from the horse's mouth, you missed the barnyard etiquette of saying no without saying no directly.
If this is true, I'm not buying any more Yihi products. Making something I paid €200 for obsolete after just 6 months is a sure fire way of loosing me as a customer.
 

smokyribs

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According to my Chinese wife, the meaning (not the translation of the words) of the reply to your question about software updates for the M class, is 'No'.
While you got it from the horse's mouth, you missed the barnyard etiquette of saying no without saying no directly.

My bad for not making myself clear.

The screenshots that i took were snippets of the conversation and if I'm not mistaken, the rep did mention that there was a possibility of yihi releasing an update for the M class but for now, the answer is a no.

Anyway, i have removed the screenshots as I was informed by yihi because what the rep said might not be in line with what yihi might eventually do and that might create uneccessary confusion.

Sorry about that. Also, screenshots of private correspondences as well as stuff in foreign languagr are not allowed on this forum.

Im posting from my old account here as my new account under the alias of smokyribs got banned due to it being a multiple account.

Kind of surprised as it was a genuine mistake in that i took some time off ECF and completely forgot about me having this account and only found out about it when i tried to get it verified.
 
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ShowerHead

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Well, >IF< YiHi does not support the M class, it will be a cold day in Hades before they see another nickle from me.
By support, I mean a timely update for the M class that fixes the small problems with Ti and adds SS.
Don't really care to have to go to my PC to change settings and such. So don't really care about SXi-Q
 

Croak

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Everyone take a deep breath. Now exhale slowly. There, better? If that didn't help, this might:

(emphasis mine)
While I was visiting YiHi, I also managed to score some insider SX350J-V2 info for everyone! We had a long car ride from the airport to talk about the SX350J-V2 in private. Obviously, everyone wants to know the scoop, and I’ve even heard some people online calling the SX350J “obsolete” already, so I decided to find out directly from YiHi. I was told the V1 & V2 PCB boards are basically identical, with a firmware upgrade for a new “computer control” feature which sounded like some kind of enhanced presets. This feature is likely related to the new SX-iQ version of YiHi’s SXmini ‘SX-i’ firmware upgrade software, but I confirmed that it will be nothing like eScribe.

Basically, according to YiHi themselves, the SX350J-V2 doesn’t have a whole lot going on that’s substantially different than V1. Plus, YiHi made this chip specifically for the SXmini ML device, and they’re just beginning production on the PCBs intended for eventual use in those units now. I was told they have no immediate plans to make the SX350J-V2 available for purchase to 3rd -party chip vendors, so there’s no rush to plan a Build Kit for these chips, even if the community requests one in the future.

Read the whole thing here:

Production Update #10 - Tuesday [September 15, 2015] - Cloudmaker Technologies
 

Mike 586

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?? 60 W and a few new wire TCRs shouldn't that just be a fw update and not a new purchase or am I missing something?

Well yeah, one would think the few new wire TCRs could have been a firmware update. But don't forget the SXi-Q control system support (ie, yihi escribe).

The DNA200 doesn't need any updates for wires - you can set custom TCR curves for any wire now or that shows up in the future.

Yea, I am changing my mind on upgradeable devices being an advancement and industry leading technology.
Doesn't do a bit of good in a market where devices are so readily abandoned for the next latest and greatest.

I spose we all see the world differently, IMO Evolv get a hard time and YiHi get loads of fans for mediocre products. I am amazed there are not more people shouting about the 170 GBP they spent on the SX that was "upgradable" probably not being upgraded any more, we don't know that for sure, but...

All this is why I'm just gonna hold of on anything YiHi for the foreseeable future.

When vaporshark slashed prices on their mods YiHi fanboys were still telling people to get the SX Mini over it because it was more capable and because of firmware upgrade capability,
despite it costing over $70USD more. That logic was pretty weak back then, but with the DNA200 on the scene its thinking with no connection to the world of reality.

Going by the old SX Mini to rDNA40 comparison and guys still recommending the SX Mini despite the $70 USD price increase, lets look at the ML compared to the DNA200. The DNA200 cost about $30 less on average when batteries are factored in and in every other conceivable way its trounces the ML class whether were talking software, software support, board capability, efficiency, available form factors, name it.

The value for the money just isn't there with the ML class IMHO.

Anyway, last year was YiHi's year, looks like the next year or so might go to Evolv...

...kinda reminds me of the old Intel/AMD or nVidia/ATI days.
 
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