DNA Papst Posted August 3, 2017 Report Share Posted August 3, 2017 i have put a fogstar 26650 in the vt75c, and in one second a bomb was born! Link to comment Share on other sites More sharing options...
dwcraig1 Posted August 3, 2017 Report Share Posted August 3, 2017 So just what do you suppose was the reason for this happening? Link to comment Share on other sites More sharing options...
DNA Papst Posted August 3, 2017 Author Report Share Posted August 3, 2017 I Do not know. I Think the battery Was to long, and at the + from the mod its make a Shirt circuit. In Germany a lot of this mod was a Bomb with 26650 batterys Link to comment Share on other sites More sharing options...
Lowbytes Posted August 3, 2017 Report Share Posted August 3, 2017 we guess that different cell sizes (in length) causes this problem - plus - 26650 using a different plus plate (bigger diameter than 18650 ) maybe the force of the battery cover pushes the plate too hard against the upper isolator of the tube and causes a battery short but we only guess....... hcigar better have to change the design of their battery tube/Cover - people over here are silly enough to blame evolve for this problems (because they do not understand that the board has nothing to do with this problem) As far as i know , Cell size can vary from 65 up to 70 mm - users with relabeled Tensai cells (65mm) reporting no problems - efest are slightly longer 67,1mm giving some people heated cells without using the mod - and soulvape experienced the worst case scenario - a pocket bomb.......... just my 2 cent Regards Mikel 1 Link to comment Share on other sites More sharing options...
dwcraig1 Posted August 3, 2017 Report Share Posted August 3, 2017 Here's the positive and it's insulator, it would be near impossible to be able to short there. But 2nd picture shows how it may short if installed with too much force. 3 Link to comment Share on other sites More sharing options...
Lowbytes Posted August 3, 2017 Report Share Posted August 3, 2017 Hmmmm.....okay - but how do you explain this melted insulator? Okay if it heats up the upper plate......... Link to comment Share on other sites More sharing options...
dwcraig1 Posted August 3, 2017 Report Share Posted August 3, 2017 I had seen that picture before but didn't comment at the time. That is caused by a high resistance connection... or bad connection simply put. Link to comment Share on other sites More sharing options...
Lowbytes Posted August 3, 2017 Report Share Posted August 3, 2017 Ah - now the penny drops - it´s a schematic of a cell (my eyes are tired - time to go to bed) ;-) Link to comment Share on other sites More sharing options...
David247 Posted August 4, 2017 Report Share Posted August 4, 2017 (edited) Sorry to see this happen soulvape hope your ok ?, no one blames evolv this lies at hcigars door, at least the VT75 has a adjustable battery cap for different sizes batterys. 11 hours ago, soulvape said: i have put a fogstar 26650 in the vt75c, and in one second a bomb was born! Edited August 4, 2017 by David247 Link to comment Share on other sites More sharing options...
David247 Posted August 4, 2017 Report Share Posted August 4, 2017 (edited) 8 hours ago, Lowbytes said: Hmmmm.....okay - but how do you explain this melted insulator? Okay if it heats up the upper plate......... This is what was about to happen to me, I was lucky and quickly pulled the battery out. Hcigar are sending me out the new battery parts to replace. Edited August 4, 2017 by David247 Link to comment Share on other sites More sharing options...
Spector NS5 RD Posted August 4, 2017 Report Share Posted August 4, 2017 firstly, i do hope you are not seriously hurt. i don't own this mod, so i can't comment on the safety of using 26650 cells inside of it (IMO,i think 26650's are just not designed / up to the task for our vaping needs). this could be a design flaw in the vt75c or this could be a poorly designed, poorly performing 26650 cell. there's not enough information from the OP. best bet is to contact hcigar explain your situation and include all the pics and any info you have included in this post. one thing to add, cells that violently vent like that are usually the off-brand re-wraps, with older cell chemistry, with questionable origins. i would stay away from "Fogstar" anything from now on. the brand name alone makes me super cringey. 2 Link to comment Share on other sites More sharing options...
Vapingwithcnote Posted August 5, 2017 Report Share Posted August 5, 2017 I use ijoy 26650 batteries in mine my mod gets warm with those batteries. I used a awt yellow one first and had one get super hot and the battery became unusable. My thoughts they need to fix this issue before someone gets seriously hurt. Link to comment Share on other sites More sharing options...
Lowbytes Posted August 5, 2017 Report Share Posted August 5, 2017 (edited) vor 17 Stunden schrieb ChunkyButt200: firstly, i do hope you are not seriously hurt. i don't own this mod, so i can't comment on the safety of using 26650 cells inside of it (IMO,i think 26650's are just not designed / up to the task for our vaping needs). this could be a design flaw in the vt75c or this could be a poorly designed, poorly performing 26650 cell. there's not enough information from the OP. best bet is to contact hcigar explain your situation and include all the pics and any info you have included in this post. one thing to add, cells that violently vent like that are usually the off-brand re-wraps, with older cell chemistry, with questionable origins. i would stay away from "Fogstar" anything from now on. the brand name alone makes me super cringey. It happened while putting in a cell and closing the Battery cover! Hcigar is absolut not responsible - if you write a negativ comment, it will be deleted and you´ll be banned (i´m already banned) b.t.w I´ve reported this issue to a chines shop owner (via PN) - he told me to feel free to share the story to his FB group - 2 hours later comment and pictures were deleted ! He told me, that he got a notification from facebook to do so! Edited August 5, 2017 by Lowbytes Link to comment Share on other sites More sharing options...
Spector NS5 RD Posted August 5, 2017 Report Share Posted August 5, 2017 try any of these avenues?........ Tel:86-0755-27345167 Mobile:+86 15919973387 Fax:86-0755-27345050 Email:admin@hcigar.com Email: service@hcigar.com (After-Service Support) Address:2rd Floor, No. 17 Building, Hualun Technological Park, Phoenix Xingye 1 Road, Fuyong Street, Baoan District,Country/Region:China (Mainland)Province/State:GuangdongCity:Shenzhen is there a possibility the positive domed portion on the top 26650 was crushed into the cell itself creating a short, whether do to a poorly designed cell or the threaded battery cap being tightened too much? is the positive contact inside the mod spring loaded or static? the cell that vented on you, what does the top of it look like (if there is anything left of it)? can you post some high resolution pics? Link to comment Share on other sites More sharing options...
Lowbytes Posted August 5, 2017 Report Share Posted August 5, 2017 vor 16 Minuten schrieb ChunkyButt200: try any of these avenues?........ Tel:86-0755-27345167 Mobile:+86 15919973387 Fax:86-0755-27345050 Email:admin@hcigar.com Email: service@hcigar.com (After-Service Support) Address:2rd Floor, No. 17 Building, Hualun Technological Park, Phoenix Xingye 1 Road, Fuyong Street, Baoan District,Country/Region:China (Mainland)Province/State:GuangdongCity:Shenzhen is there a possibility the positive domed portion on the top 26650 was crushed into the cell itself creating a short, whether do to a poorly designed cell or the threaded battery cap being tightened too much? is the positive contact inside the mod spring loaded or static? the cell that vented on you, what does the top of it look like (if there is anything left of it)? can you post some high resolution pics? Mikel (soulvape DNA Germany Group) is still in contact with hcigar - thats the good news The positiv inside the mod is spring loaded - springy way around 1,3mm - sure it could happened while he was putting the cell into the mod (maybe the top plate crushed too hard against the spring loaded plus pole ) maybe the force of the battery coverage was too high - who knows - as he reported it starts to blow off while screwing down the threaded battery cap - but we have been informed that more Users running into problem by using 26650 cells (cell heating up - unusable cell after trying to use in this mod! For sure he could have done something wrong - but he´s not alone with this "problem" The bad news - due the blow off everything is now one part - as he told us everything is baked together in one part ................ Link to comment Share on other sites More sharing options...
DNA Papst Posted August 5, 2017 Author Report Share Posted August 5, 2017 Thats right. My English writing is not Good to write like you it done. Thanks Link to comment Share on other sites More sharing options...
Lowbytes Posted August 5, 2017 Report Share Posted August 5, 2017 vor 2 Minuten schrieb soulvape: Thats right. My English writing is not Good to write like you it done. Thanks i always try to do my best - i am not sure if i do write correct - but it looks like it is good enough But hey - it´s nearly 40 years ago that i have finished school 1 Link to comment Share on other sites More sharing options...
DNA Papst Posted August 5, 2017 Author Report Share Posted August 5, 2017 Here a Video from the mod,...... Link to comment Share on other sites More sharing options...
DNA Papst Posted August 6, 2017 Author Report Share Posted August 6, 2017 From another german user, the + wire has a damage, can this make a short circuit when contact to the case?, and then the battery make boom? Link to comment Share on other sites More sharing options...
Lowbytes Posted August 6, 2017 Report Share Posted August 6, 2017 Imho NO - this would give you nothing else than the notification "Atomizer Short" It would be the same as using the copper tool for measuring the internal mod resistance - this short is behind the DNA board wich have a Short protection! Regards Mikel 1 Link to comment Share on other sites More sharing options...
Spector NS5 RD Posted August 6, 2017 Report Share Posted August 6, 2017 i agree with @Lowbytes. this would most likely not be the cause. OUT+ to GND = 14.xx k ohms OUT+ to BATT+ =6.xx meg ohms >>>>> not a direct short. 1 Link to comment Share on other sites More sharing options...
Lowbytes Posted August 7, 2017 Report Share Posted August 7, 2017 (edited) Let´s take a look to the numbers of some measurements Distance lower edge to insulator inside of the tube = 69,3mm Distance lower edge to positive pole contact inside of the tube= 68,0mm (spring loaded positive pole not pushed) Distance lower edge to positive pole contact of the tube= 69,3mm (spring loaded positive pushed) Thick of the battery cap= 3,6mm That means a cell of 64,4 mm (of length) will have contact (while battery cap is screwed in totally) - a cell off 65,7mm will push in the spring loaded contact totally (while battery cap is screwed in totally) and just touching the insulator - a cell of more than 65,7mm will be pressed against the insulator (if battery cap will screwed in totally) - In worst case the positive doomed portion of a 26650 (of 67mm length) cell will be bent 1,3mm into the cell (not healthy) By increasing the battery tube length 2mm and chosen 3,3mm of springy way for the positiv pole inside of the tube never would this have been happened ?! But i´ved only used a normal measuring stick - maybe the numbers are +- 0,1mm My2cent it was avoidable! Edited August 7, 2017 by Lowbytes Link to comment Share on other sites More sharing options...
Lowbytes Posted August 7, 2017 Report Share Posted August 7, 2017 By the way - all of my 18650 cells are exactly 65mm of length ........... why are 26650 from 65mm up to 67mm ..... Okay okay i know - they are designed for other purposes Link to comment Share on other sites More sharing options...
Lowbytes Posted August 7, 2017 Report Share Posted August 7, 2017 Another fact - The battery cap was not screwed totally in ............halfway in? Link to comment Share on other sites More sharing options...
Smokin Dave Posted August 7, 2017 Report Share Posted August 7, 2017 (edited) I've noticed that if I don't have the battery cap completely screwed in I can feel electrical shocks on my finger when I take a draw.My little finger rests on the battery cap when I hold the mod in my hand.I have to make sure I have that cap screwed in tight which makes it a bitch to unscrew when I have to change batteries.I'm thinking that the Lost Vape Paranormal is in my near future and boxing up the Vtc75 and calling it a bad purchase choice. Edited August 7, 2017 by Smokin Dave Link to comment Share on other sites More sharing options...
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