Initial Smok X8 and also Smok V8 Overall Test and my Hocolony Opinion
Due to a pair of occurrences of the popular Smok Stick V8 and also X8 mods recording fire while charging I made a decision to check if tright here was anypoint I can watch in a teardown that could show a feasible cause.
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Smok Stick X8 page: https://www.smoktechnology.com/kit/stick-x8
Smok Stick V8 page: https://www.smoktech.com/kit/stick-v8
Teardown photos: https://imgur.com/a/i1doD
A total of eleven units were cycled 5 times each and then disassembled and also checked. The E Cigarette Smok X8’s and also V8’s I had actually were similar internally.
Bottom line…my testing and the disassembly/inspection was inconclusive. I didn’t check out any apparent worries in any type of of the systems I checked and all of them functioned properly.
This does NOT mean that eextremely Smok X8 and also V8 is unconditionally “safe”!This also does NOT mean “user error” caused the fires!
We can’t come to any type of conclusions from my teardown various other than I had no concerns through the ones I looked at.
I additionally obtained among the devices that caught fire during charging, in addition to the charger that was supplied. The device was totally scorched internally. Tright here was nopoint left to examine various other than ashes. The Samsung 5V/1A USB charger block that was being used was still functioning commonly, outplacing a bit over 5.0V. No conclusions could be made concerning the reason of this device’s faiattract.
I’d prefer to thank Eva Campbell for donating 3 brand-new X8’s, Lynda Abshear for donating two new V8’s and among the shed V8’s, and All Day Vapes for donating three brand-new X8’s and 3 brand-new V8’s. Thank you!
Here is what I did for each Smok E Cigarette unit:
– Cycled it 3 times using a Apple iPad USB charger (5.2V/2.4A) and also then 0.13 ohm and 0.4 ohm coils for discharging till the unit would certainly no much longer fire. All of the systems charged without event and without getting more than warm externally (close to the circuit board).
– The USB cable that shipped via one of the systems was offered for each charge and taken on fairly approximately eexceptionally time it was put. I made sure to insert it “upside-down” initially eexceptionally time to attempt to replicate some of wear & tear it might check out in the time of usage.
– Cycled it twice making use of the exact same coils as prior to but via a power supply to set the charging voltage to 4.5V to simulate a low high quality, i.e., low voltage, USB charging block. All of the units charged without incident and without obtaining even more than warmth (near the circuit board).
– Disassembled and inspected it for missing padding or insulators, battery damages throughout assembly, inconsistent or low high quality circuit board soldering, sloppy wiring runs, indicators of overheating, absent mounting hardware, incontinuous soldering, etc.
18650 Battery Test my observations:
– Unit to unit assembly consistency was great except that 2 of the devices had actually the circuit board soldered to the screw posts rather of utilizing screws.
– Environment-friendly vegetable grocery bag tape was supplied to organize the babsence negative wire from the battery to the circuit board. I guess it was an inexpensive option?
– The black negative wire going up the side of the battery was a really little gauge wire and acquired hot as soon as about 23A was flowing with it through a freshly charged battery and a 0.13 ohm coil. No damage to the wire’s insulation or side of the battery was checked out in any type of unit though.
– Charging present was 0.65A-0.70A for all the systems.
– There was foam padding on the bottom and also soft rubber pincluding on the optimal of the battery. These would help defend the battery from damages if the mod was dropped however I carry out not recognize how these would certainly host up after several drops over time.
– The end/side “flaps” of the pouch cell were extremely tightly folded against the cell so it all fit in the tube but no damage was watched in any kind of of the cells once I removed the pincluding and the insulators and also unravelled the flaps.Smok Battery Test Conclusion:
Due to the fact that we don’t recognize what the reason of the failures were I strongly recommend that charging ANY mod should constantly be done on a non-flammable surchallenge through someone nearby the entire time in instance something goes wrong.
Since these kits are offered to more recent vapers I’d choose to see a decent USB charging block consisted of. It would certainly include minimal price and prevent the use of low quality chargers.
One of the 2 1A USB charging blocks I received with the burned out unit, yet was not being provided when the unit caught fire, outputted just 3.90V and much less than 0.5A when provided. That is around 3.7V to the battery as soon as it passes via the USB cable and the circuit board. This outcomes in a battery that is not completely charged and it might maybe cause difficulties through the unit’s electronics as this is a lot reduced than the 4.40V minimum voltage for USB these devices might be expecting.
I don’t know if low charging voltperiods, and also low quality USB chargers, are a problem or not however consisting of a charger through the unit would make them more “all-in-one” kits and assist limit the use of crappy chargers.
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I would choose to personally welcome Battery Mooch to carolannpeacock.com
“Mooch” is famed in the sector as the “battery guy” and also is quite famous on the ECF.Although I have actually some experience via battery experimentation, Mooch has actually all the experience I absence so I though it a good fit to offer him another place in internet to publish his write-ups.
Who is Battery Mooch?
My name is John Mucjust how, some of you might understand me as Mooch on ECF and FB and also Mooch315 on ECR.
I have been vaping given that April, 2015 and haven’t smoked once because Istarted!
I was born and also raised in New York City and also still live tright here now. Since 1992 I have been developing and also structure electronic devices for a big number of clients. My initially commodities were camera remote-manage units for sporting activities photographers. As these devices, and other devices, transitioned from wired to wireless the performance of the batteries they used was extremely crucial as tbelow was no method to replace them throughout usage. This caused me doing more and more battery experimentation and also emerging the electronics to charge, test, and defend them.As battery innovation progressed, from NiCd to NiMH to Li-Ion and also nowultracapacitor/Li-Ion hybrids, the tools I developed and also the battery testing I didadvanced along with them. I began specializing in power monitoring electronics; battery chargers, energy harvesters (for charging from warmth, light, or vibration/movement), power supplies, battery analyzers, electronic loads for battery discharging, and also battery management/defense units. This is the work-related I still carry out this day.
My clients have actually included the US Army, National Geographic, Sports Illustrated,Eastguy Kodak Company, and hundreds of various other companies from huge to little. Part of the work-related I’ve done for a lot of my clients has actually been battery experimentation. Sometimes they desire to recommend a great battery to their customers. Other times they’re batteries I have actually favored to incorporate through my electronic devices to develop a complete, safeguarded power resource for them to incorpoprice right into their commodities.Depending on my client’s requirements this trial and error can take approximately several weeks to finish. I usage a subset of these tests as soon as evaluating the batteries we use as soon as vaping. This has continuous-current tests to develop the battery’s true (and safe) ratings. They likewise help to determine if there’s any type of danger of venting if among our mods autofires or a mechanical mod’s switch is accidentally pressed. The pulse-current tests meacertain the degree of voltage sag we would view once vaping at various existing levels. Both forms of tests are done the same way for every collection of batteries I test.This consistency in the trial and error permits for straight comparison of the performance of different batteries also if the pulse discharging I carry out doesn’t enhance the way you vape.Safety is my number one priority. While I often test at discharge existing levelsthat deserve to bring about unsafe battery temperatures, this is the just method to figure out what a battery’s true and safe ratings are. No battery is completely safe but we can definitely prevent taking uncrucial dangers.
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My blog at ECF has actually the results of all my experimentation and a couple of posts on batteries,battery security, etc.:
I have actually additionally noted the tools I use and also the procedures I follow as soon as experimentation. Thisenables anyone to replicate my tests if they desire to:
My battery test results offer you a source you can usage once selecting a batterythat will not just be safer for the method you vape however will also provide you greatperformance.