Popular Post photorph Posted October 15, 2019 Popular Post Share Posted October 15, 2019 (edited) Hey all, ewheels just sent out an advisory regarding the KS16X use with charger as the charger may be faulty. Please read it, you got it if you bought from us. Do not use fast chargers supplied by ewheels with KS16X. See below. "We have just received an alarming report of a 16X catching on fire after being used with a defective charger. Under the circumstances, it was extremely fortunate that the Wheel was outside at the time, where the damage was relatively minor. Here is a summary of the facts: After a few weeks of normal use, the Customer noticed that when the charger was plugged into the wall (but not the Wheel), the charger's LCD readout was showing '1 . ' on the Voltage readout (see image below), instead of the normal ~84v The charger was emitting a low frequency clicking sound Pressing the charger's reset button kicked off the charge cycle, where the voltage had continued to climb exceeding 88v, as represented on the charger's LCD display 15 minutes later, the rapid-charger turned off, but on turning on the Wheel, the Customer observed the voltage (reported through WheelLog) completely discharging in seconds He then plugged in the standard charger, about one hour later the Wheel caught on fire What is being done & recommendation: This charger is being sent to an independent laboratory for analysis, I am also coordinating for the King Song 16X battery to be sent in the laboratory for over-voltage testing. Until we receive the lab results back & have a complete understanding of exactly what went wrong, it is strongly recommended not to continue using the rapid-charger. WARNING: if you do continue using the rapid-charger, please double-check that the voltage readout displays ~84v before plugging into the Wheel & keep an eye on the charging progress. For context, the charger supplier, JaiRui, has produced hundreds-of-thousands of chargers, we have seen many cases of the charger failing in a multitude of ways, but invariably it has been in a harmless under-voltage state. This is the first & only such case of an over-voltage condition, but considering the extreme severity & intensity of a battery fire, other chargers from this production batch may also be effected. We will continue to update you as more information becomes available. Thank you, Jason" Edited October 16, 2019 by mrelwood Edited title to more precisely reflect the issue. 5 Quote Link to comment Share on other sites More sharing options...
EUC Custom Power-Pads Posted October 15, 2019 Share Posted October 15, 2019 (edited) Why you don't post it here for all users? Makes no sense just to say, they should read the mails. Then you can also send an e-mail to all customers to read the other e-mail. Edited October 15, 2019 by buell47 2 Quote Link to comment Share on other sites More sharing options...
photorph Posted October 15, 2019 Author Share Posted October 15, 2019 4 minutes ago, buell47 said: Why you don't post it here for all users? Makes no sense just to say, they should read the mails. Then you can also send an e-mail to all customers to read the other e-mail. Sorry I am trying to catch up on a lot of things today due to this KS16x issue. In a nutshell, do not use rapid charger with KS16x. one of them charge it beyond 84v resulting in fire. I'm many customers who bought from ewheels will be posting it, they already have on fb. Quote Link to comment Share on other sites More sharing options...
EUC Custom Power-Pads Posted October 15, 2019 Share Posted October 15, 2019 Which fast charger is included? Quote Link to comment Share on other sites More sharing options...
EvoKnvl Posted October 15, 2019 Share Posted October 15, 2019 15 minutes ago, photorph said: Hey all, ewheels just sent out an advisory regarding the KS16X. Please read it, you got it if you bought from us. Do not use fast chargers supplied by ewheels with KS16X 1 minute ago, photorph said: Sorry I am trying to catch up on a lot of things today due to this KS16x issue. In a nutshell, do not use rapid charger with KS16x. one of them charge it beyond 84v resulting in fire. I'm many customers who bought from ewheels will be posting it, they already have on fb. Really? Why did you omit the fact that it was probably a defective charger. Per the 1st paragraph in the email We have just received an alarming report of a 16X catching on fire after being used with a defective charger. Sometimes I really wonder about this forum... 1 Quote Link to comment Share on other sites More sharing options...
photorph Posted October 15, 2019 Author Share Posted October 15, 2019 1 minute ago, EvoKnvl said: Really? Why did you omit the fact that it was probably a defective charger. Per the 1st paragraph in the email We have just received an alarming report of a 16X catching on fire after being used with a defective charger. Sometimes I really wonder about this forum... mentioned in my posts it's the charger likely. However the wheels should have some fail safes to prevent this. Jason is working on it with charger supplier and kingsong. Quote Link to comment Share on other sites More sharing options...
meepmeepmayer Posted October 15, 2019 Share Posted October 15, 2019 (edited) Split into its own thread for visibility. @photorph thanks for the information, feel free to edit the title and post for accuracy once the situation becomes more clear. Edited October 15, 2019 by meepmeepmayer 1 Quote Link to comment Share on other sites More sharing options...
RoadRunner Posted October 15, 2019 Share Posted October 15, 2019 So then the warning should not only be for the 16X. It´s got nothing to do with the wheel then. 1 Quote Link to comment Share on other sites More sharing options...
photorph Posted October 15, 2019 Author Share Posted October 15, 2019 (edited) Correct, nothing to be concerned about. More than likely it's one faulty charger that led to this. However still waiting on more info. No need to worry, the advisory to stop using rapid chargers supplied by ewheels is precautionary. I have been on phone while typing all of this, so let me emphasize again. NO need to be concerned. The only thing to take out of it is don't use ewheels rapid charger with 16x until further info is available. Thanks. Edited October 15, 2019 by photorph 1 Quote Link to comment Share on other sites More sharing options...
Popular Post meepmeepmayer Posted October 15, 2019 Popular Post Share Posted October 15, 2019 3 minutes ago, RoadRunner said: So then the warning should not only be for the 16X. It´s got nothing to do with the wheel then. Sounds like the situation isn't 100% clear right now. Usually the BMS should prevent overcharging, shouldn't it? 4 Quote Link to comment Share on other sites More sharing options...
EvoKnvl Posted October 15, 2019 Share Posted October 15, 2019 3 minutes ago, RoadRunner said: So then the warning should not only be for the 16X. It´s got nothing to do with the wheel then. Exactly, the way some people post on this forum, if you bought a 16x, you're getting a pedal-tilting, firmware bugged, 20mph wheel that will explode when you fast charge it. 1 Quote Link to comment Share on other sites More sharing options...
photorph Posted October 15, 2019 Author Share Posted October 15, 2019 1 minute ago, meepmeepmayer said: Sounds like the situation isn't 100% clear right now. Usually the BMS should prevent overcharging, shouldn't it? exactly, I don't want to say anything additional until the charger supplier and Kingsong have both given us their input. For ewheels customers, watch your emails for updates and just follow what they say. Quote Link to comment Share on other sites More sharing options...
meepmeepmayer Posted October 15, 2019 Share Posted October 15, 2019 Feel free to make the title less alarmistic. Didn't know what to call it Quote Link to comment Share on other sites More sharing options...
EUC Custom Power-Pads Posted October 15, 2019 Share Posted October 15, 2019 14 minutes ago, meepmeepmayer said: Usually the BMS should prevent overcharging, shouldn't it? I hope there will be a KS16X V2 next spring. The only stupid thing is, which idiot will buy mine? Quote Link to comment Share on other sites More sharing options...
Marty Backe Posted October 15, 2019 Share Posted October 15, 2019 14 minutes ago, meepmeepmayer said: Sounds like the situation isn't 100% clear right now. Usually the BMS should prevent overcharging, shouldn't it? Is this really true? So you can pump 100-volts into a 84-volt wheel with no problems? Hmmmm. 2 Quote Link to comment Share on other sites More sharing options...
meepmeepmayer Posted October 15, 2019 Share Posted October 15, 2019 That was a real question. I don't know if the BMS is supposed to switch off the charging if the input voltage is too high. Quote Link to comment Share on other sites More sharing options...
EUC Custom Power-Pads Posted October 15, 2019 Share Posted October 15, 2019 But actually the charger should only be switched on after it has been plugged into the EUC. So first wheel then wall. So you have to proceed as follows if you want to do it correctly: Switch on Charger (not connected to EUC) Check voltage switch off Plug into EUC switch on. Quote Link to comment Share on other sites More sharing options...
photorph Posted October 15, 2019 Author Share Posted October 15, 2019 (edited) I posted the full service advisory in the first post. This advisory is just to be on the safe side as Jason decided to take the being overly cautious approach. Edited October 15, 2019 by photorph Quote Link to comment Share on other sites More sharing options...
RetroThruster Posted October 15, 2019 Share Posted October 15, 2019 (edited) Hmm, I just checked mine and it's fine, BUT, I've only charged my wheel 3 times (3 or 4 amps only), I"m going to continue using it but will watch it like a hawk AND only charge outdoors. EDIT: My charger is only a few weeks old as is my wheel, it sounds like the charger in question is about the same age as mine, I don't ride a lot of miles so I'll be using the standard charger til I get word about this fast charger. Edited October 15, 2019 by RetroThruster Quote Link to comment Share on other sites More sharing options...
meepmeepmayer Posted October 15, 2019 Share Posted October 15, 2019 14 minutes ago, photorph said: the big FIRE wording scares people and results in a lot of emails Sorry for that You guys don't need more emails. You already figured out how to change the title (edit the first post). Moving this back to the KS forum. 1 Quote Link to comment Share on other sites More sharing options...
alex5454 Posted October 15, 2019 Share Posted October 15, 2019 but if you buy 2 original 1.5 A chargers? could something happen to the KS 16X? with the quick charger you get 5 A? and instead with 2 chargers 1.5 + 1.5 = 3 A RIGHT? Quote Link to comment Share on other sites More sharing options...
Patton250 Posted October 15, 2019 Share Posted October 15, 2019 1 hour ago, EvoKnvl said: Exactly, the way some people post on this forum, if you bought a 16x, you're getting a pedal-tilting, firmware bugged, 20mph wheel that will explode when you fast charge it. Only people that don’t own one say that. 1 Quote Link to comment Share on other sites More sharing options...
Mark Lee Posted October 15, 2019 Share Posted October 15, 2019 3 minutes ago, alex5454 said: but if you buy 2 original 1.5 A chargers? could something happen to the KS 16X? with the quick charger you get 5 A? and instead with 2 chargers 1.5 + 1.5 = 3 A RIGHT? My 16X came with 2.5 Amp charger. Quote Link to comment Share on other sites More sharing options...
photorph Posted October 15, 2019 Author Share Posted October 15, 2019 Using original charger that came with it should be FINE. Yes you can use two of the original 1.5A chargers for total of 3A. I've used the regular and ewheels rapid charger with mine with zero issues, however as I mentioned to be on the safe side for now avoid using the 5A rapid charger. 1 Quote Link to comment Share on other sites More sharing options...
alex5454 Posted October 15, 2019 Share Posted October 15, 2019 19 minutes ago, Mark Lee said: My 16X came with 2.5 Amp charger. read back of charge...OUTPUT 1.5A 84 V.... 2 Quote Link to comment Share on other sites More sharing options...
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