New Member- VV Mod Advice/Opinions

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cryfreedom66

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Aug 2, 2012
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Jan in Colorado, Feb in Florida, were 2 widely reported incidents of things going badly. They were, from what I read at the time, both cases of stacked hv, not purpose-built, engineered, vv, however they both resulted in injury it appears.

I don't pretend things cannot go wrong, just say that it is important to understand the risks, and how to reduce them by using well designed products.

Here's the link to the oldsoldier thread on an IMR venting: http://www.e-cigarette-forum.com/fo...ures-serious-battery-failure-imr-18650-a.html As OS said, "A failure is a failure. The battery vented with flame (aka exploded). Whether it was user error, a shorted mod or the moons aligned just wrong the battery did fail and vent with flame."

OP, apologies for the diversion.

No problem its all relevant and although I am not a worrier I am intelligent and a fan of making smart, informed decisions (which is why I'm vaping instead of smoking tar) :)
 

markfm

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The PV like Buzz Pro and Provari have good electronic protections, general over current, short circuit, reverse battery, low voltage, etc. Hot springs or the 2 cents provide a good added inline fuse if your PV lacks short-circuit. Protected ICR batteries provide basic short circuit and low voltage cutout. Mechanical holes/vents, over-size case to accommodate at least some degree of battery swelling, and blowout soft-fail points provide the final protection, if a given battery is just having a bad day (you can have internal shorts occur in batteries, which none of the external protections can help on, that's why people are advised to toss out batteries with obvious physical damage or unreasonably high voltage coming off a charger).

The likelihood of any given item failing at any given time is quite low, but looking for combinations of safety features, in conjunction with good charging practices (don't leave batteries on a charger forever, even with good chargers -- I use an outlet timer with positive cutoff after 6 hours, others use charging bags, others just charge in safe/fire resistant areas), represent best practices. Smaller batteries just don't have as much energy stored, but as you go into higher energy units it is good to up your game safety-wise.
 

cryfreedom66

Senior Member
ECF Veteran
Aug 2, 2012
125
27
FL
The PV like Buzz Pro and Provari have good electronic protections, general over current, short circuit, reverse battery, low voltage, etc. Hot springs or the 2 cents provide a good added inline fuse if your PV lacks short-circuit. Protected ICR batteries provide basic short circuit and low voltage cutout. Mechanical holes/vents, over-size case to accommodate at least some degree of battery swelling, and blowout soft-fail points provide the final protection, if a given battery is just having a bad day (you can have internal shorts occur in batteries, which none of the external protections can help on, that's why people are advised to toss out batteries with obvious physical damage or unreasonably high voltage coming off a charger).

The likelihood of any given item failing at any given time is quite low, but looking for combinations of safety features, in conjunction with good charging practices (don't leave batteries on a charger forever, even with good chargers -- I use an outlet timer with positive cutoff after 6 hours, others use charging bags, others just charge in safe/fire resistant areas), represent best practices. Smaller batteries just don't have as much energy stored, but as you go into higher energy units it is good to up your game safety-wise.


I usually charge batteries overnight as I sleep, but usually only sleep for about 7 hours. Would you consider 7-8 hours a night an ok charge time for the 18490?
 

markfm

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Purely opinion, no, I wouldn't leave them unattended 7-8 hours on a charger, unless it was in a fire safe area. I used to charge overnight all the time too, but there were multiple tech discussions earlier this year, weird incidents (not just the two injury ones, but others like eGo chargers going wonky and launching eGos across a room on a bad overcharge), so people started tightening up what they do.

I use good chargers, good batteries, am careful not to abuse them, but still use an outlet timer to provide a hard cutoff, will be changing the timer back to 3 hours. (I have some larger 18650 batteries which even on a 1A max charge current take a bit more than 3 hours for a full charge cycle, but I'll trade absolute capacity to bring the timer back to a setting that works well with my other batteries.) Even with a good charger you don't want to leave the batteries connected to house power longer than necessary, chargers can fail, power spikes due to lightning, etc. With less-good chargers you get more "trickle" current which some batteries handle better than others.

It's all personal risk assessment. I do find it convenient to charge batteries unattended, am too lazy to use a charging bag (which still has to be put on a heat-resistant surface), the timer is my own personal "good enough".

(as a side note, I picked up another of the little $10 timers for the basement, it runs the power strip for my hand-tool chargers)

To put this in perspective, I'm a huge fan of vaping. I'm no longer sucking down all the nasty stuff from cigs, and smoking is a significant cause of house fires, looking for well-designed PVs and good charging practices are just helping improve things even more.
 
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Vapoor eyes er

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Sep 13, 2011
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Agree with marfm. a few months ago charging 18650 on my TR-001 ( i know it's absolute garbage but came with kit) Batt was taking long time and took it off charger and shutoff chip had failed/ battery was warm and tested fully charged. I never charged batts unattended before and still don't. Only change is I now also use a timer and a higher quality charger.
 

bravedawg

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Jul 23, 2012
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Thanks for the input. Im leaning towards a provari mini, buying a couple extra 18350s and also a 18490 with extended cap so that if I want to take it to work I can use it in "mini mode" and throw the extender on for at home use. I could also just get the 501 to 901 adapter so I can use my 808 stuff with it but also 501 stuff (since 808 clearos and fluxos sell out so quickly!).

Seems like I have a plan haha :laugh:

So, to provari users, what is your recommendation for a tank/clearo/fluxo/carto?

I don't have one yet but I'm getting a Provari myself later this month as a birthday gift. If you're looking for a tank though you should check out the Phiniac tanks - not the cheapest but well made and very nice looking tanks. I recently got my first to use with my Silver Bullet and I love it.
 

cryfreedom66

Senior Member
ECF Veteran
Aug 2, 2012
125
27
FL
Purely opinion, no, I wouldn't leave them unattended 7-8 hours on a charger, unless it was in a fire safe area. I used to charge overnight all the time too, but there were multiple tech discussions earlier this year, weird incidents (not just the two injury ones, but others like eGo chargers going wonky and launching eGos across a room on a bad overcharge), so people started tightening up what they do.

I use good chargers, good batteries, am careful not to abuse them, but still use an outlet timer to provide a hard cutoff, will be changing the timer back to 3 hours. (I have some larger 18650 batteries which even on a 1A max charge current take a bit more than 3 hours for a full charge cycle, but I'll trade absolute capacity to bring the timer back to a setting that works well with my other batteries.) Even with a good charger you don't want to leave the batteries connected to house power longer than necessary, chargers can fail, power spikes due to lightning, etc. With less-good chargers you get more "trickle" current which some batteries handle better than others.

It's all personal risk assessment. I do find it convenient to charge batteries unattended, am too lazy to use a charging bag (which still has to be put on a heat-resistant surface), the timer is my own personal "good enough".

(as a side note, I picked up another of the little $10 timers for the basement, it runs the power strip for my hand-tool chargers)

To put this in perspective, I'm a huge fan of vaping. I'm no longer sucking down all the nasty stuff from cigs, and smoking is a significant cause of house fires, looking for well-designed PVs and good charging practices are just helping improve things even more.


Cant thank you enough for all the assistance and time you've taken to elaborate. I will defiantly get a timer for my charging outlet. I have two more requests from you then I promise I will live you alone :) Firstly, any risks associated with using the Provari mini with the 18490 and extended cap (as in, are there any further risks with the mini vs using the 18490 with the standard provari/ any safety features missing from the mini)? Also would you recommend the standard AW IMR batteries/ multicharger sold with the Provari or would I be better off buying them from a different company?

Sorry, i know i'm asking a lot of questions but you definitely seem to know what your talking about and its better to be safe than sorry (especially since I have a 2 year old)

Thanks again.

PS- once I get your input on these last points I will be ordering YAY excited
 

markfm

Aussie Pup Wrangler
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Jul 9, 2010
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I don't use the Provari myself, but they have a very active area (the Provape ECF Suppler area).

I don't know of any added/different pluses or minuses of using the unit with the extender cap vs. not, though expect it is a shrug, that literally the extender is just a screw-on extension so shouldn't affect device safety/performance in any way (other than longer run time from a larger battery).

Provape sells good gear, and the AW IMR batteries are well known good items (though many counterfeits -- Provape will have real ones). The other very good IMR that I've been hearing about are the Panasonics, though I don't know if they're available in the size you want. SuperT Manufacturing and RTD are two other very well known vendors of good chargers and IMR batteries.

Personally I use the XTAR WP2 II charger, which has very good reviews and costs about 1/2 as much as the very popular Pila chargers. It has both 500 mA and 1000 mA max charge rates, via a switch. Use the 1000 setting if your battery is >= 1000 mAh, stay with 500 for smaller batteries. The Pila charger is the other top end charger -- I really don't know if it's any better than the XTAR, which I bought after reading recent reviews on some of the light forums.

(Technically, the XTAR has a very nice charge characteristic, extremely low post-fill trickle, and a very low discharge rate once power is disconnected. A "cool factor" thing, for me, is it comes with a 12VDC car adapter, if you're ever stuck in the middle of nowhere, need to recharge from your car.)

With the XTAR an 18490 would work fine with the included base set of spacers. For shorter batteries (I also use some xx340 batteries), a second pair of spacers is needed, they cost about $1 for a pair. I'm not sure about the Pila and spacers.

If Provape sells either the XTAR or the Pila, no problem. If not, while whatever they do carry is good gear, you might want to go for a Pila or XTAR from elsewhere.

This is the little timer I use: http://www.amazon.com/Belkin-Conserve-Socket-F7C009q-Energy-Saving/dp/B003P2UMS0

Switch on the side lets you select one of three durations. You need to test your batteries with your charger, to see how long they take for one full charge cycle. My smaller batteries all charge in under 3 hours on my charger, so I use 3 normally. Set the duration, then leave it alone, just tap the button on top to start a cycle. It can handle up to 1500W, no problem with our tiny draw chargers, and draws no power itself when off.
 
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