bird Posted May 8 Share Posted May 8 (edited) Hello, I just picked up a Lynx a few days ago. It seems like an amazing wheel already and I'm excited to put lots of miles on it. The past few times I have tried to charge the wheel, my circuit breaker keeps tripping when the wheel is balancing around 100%. I assume this is due to the high voltage of the wheel drawing a lot of power from the outlet. Has anyone else experienced this? Is this normal for high voltage EUC? This never happened with my 134V EX30. Is there anything I can do to avoid this from happening? In the meantime, I am going to experiment charging on different outlets throughout my apartment, and maybe with less devices plugged in. Edited May 8 by bird Quote Link to comment Share on other sites More sharing options...
noonewantstobepeterchris Posted May 8 Share Posted May 8 (edited) The house *CB? That should not trip, especially at low loads. Is it a fault or arc detection breaker? Edited May 8 by noonewantstobepeterchris Quote Link to comment Share on other sites More sharing options...
bird Posted May 8 Author Share Posted May 8 (edited) It's just a regular circuit breaker box like every other one I've seen, not sure how to tell if it's an arc detection breaker. It's also a new apartment building, so it shouldn't be due to crappy old wiring or something. The last couple of times this happened, I noticed the charger would go from: 1. Fan on, red light 2. Wait 1 second 3. Fan off, green light 4. Wait 1 second And repeat this cycle until the circuit breaker triggered. The timing of the switch from red to green and back was very consistent -- always one second on, then one second off. This is not like the random green/red flickering you see when a battery is close to 100%. Maybe this helps point to some root cause? I'm pretty perplexed but will keep the thread updated if I find anything else out. Since I posted this thread, I reset the breaker and put the charger back on, and this behavior hasn't happened again. Edited May 8 by bird 1 Quote Link to comment Share on other sites More sharing options...
noonewantstobepeterchris Posted May 8 Share Posted May 8 16 minutes ago, bird said: It's just a regular circuit breaker box like every other one I've seen, not sure how to tell if it's an arc detection breaker. It's also a new apartment building, so it shouldn't be due to crappy old wiring or something. Here is an intro video: Additionally, what is the model number of the breaker? 1 Quote Link to comment Share on other sites More sharing options...
bird Posted May 30 Author Share Posted May 30 Thanks for sharing the tips about AFCI circuits. In the meantime I have made a a couple of discoveries: The breaker tripping during balancing is a 15A CAFCI circuit for lighting The Lynx charger was overcharging cells past 4.2V After noticing this, I found a 20A non-AFCI circuit used for my laundry machine. I also followed the instructions from this video to lower the voltage that the stock charger output. Now that I am charging on a 20A fuse and have adjusted the charger to charge cells to ~4.15V, I am able to fully charge the wheel without issue. The original 15A CAFCI circuit still trips during balancing even after adjust the charger voltage, so I gave up on using it and will stick with the 20A circuit instead. 1 Quote Link to comment Share on other sites More sharing options...
noonewantstobepeterchris Posted May 30 Share Posted May 30 Glad you found another breaker to charge it off of. It kind of sounds like the balancing circuits switching on and off look like a “series fault” to your breaker. 1 Quote Link to comment Share on other sites More sharing options...
locoforeuc Posted August 21 Share Posted August 21 I am having a fault with my battery not charging to 151.2v, instead stopping around 147 and the charger shuts off. At which point I get a BR or BL flashing on the screen of the Lynx. Some cells are charged past 4.2V, like 4.209, 4.213, 4.215. I have 5000 kms on it, this is the first time it happened. How do I set it, so every cell gets 4.15? Simply adjust the charger output? Doesn't the newest firmware have charging control (which I have set to 151.2v)? And my charger is also set to 151.2v. 2 Quote Link to comment Share on other sites More sharing options...
UniVehje Posted August 21 Share Posted August 21 1 hour ago, locoforeuc said: I am having a fault with my battery not charging to 151.2v, instead stopping around 147 and the charger shuts off. At which point I get a BR or BL flashing on the screen of the Lynx. Some cells are charged past 4.2V, like 4.209, 4.213, 4.215. I have 5000 kms on it, this is the first time it happened. How do I set it, so every cell gets 4.15? Simply adjust the charger output? Doesn't the newest firmware have charging control (which I have set to 151.2v)? And my charger is also set to 151.2v. Do you know anybody else with a Lynx? You could try with a different charger. Or just get a new and better adjustable fast charger to test it out. You’ll benefit from it anyway. The stock charger is of low quality and I would first rule it out as culprit. But as some cells are already past 4.2 that should stop the charge in any case. What’s the voltage on other cells? Are the packs unbalanced? Quote Link to comment Share on other sites More sharing options...
meepmeepmayer Posted August 21 Share Posted August 21 6 hours ago, locoforeuc said: I am having a fault with my battery not charging to 151.2v, instead stopping around 147 and the charger shuts off. At which point I get a BR or BL flashing on the screen of the Lynx. Bad cell? This sounds like ~4.2V less than it should be, which typically indicates a bad cell. Be careful! Does the Lynx allow looking at each individual cell voltage? I'd contact your seller with the suspicion of a bad battery pack if you find one or it cannot be ruled out, and ask how to proceed. 6 hours ago, locoforeuc said: Some cells are charged past 4.2V, like 4.209, 4.213, 4.215. In itself, these numbers are no issue. The voltage measurement isn't super exact either. 1 Quote Link to comment Share on other sites More sharing options...
Marty Backe Posted August 21 Share Posted August 21 20 hours ago, locoforeuc said: I am having a fault with my battery not charging to 151.2v, instead stopping around 147 and the charger shuts off. At which point I get a BR or BL flashing on the screen of the Lynx. Some cells are charged past 4.2V, like 4.209, 4.213, 4.215. I have 5000 kms on it, this is the first time it happened. How do I set it, so every cell gets 4.15? Simply adjust the charger output? Doesn't the newest firmware have charging control (which I have set to 151.2v)? And my charger is also set to 151.2v. The Veteran chargers are LOW QUALITY. Another reason to invest in an aftermarket fast charger (I use the Roger Charger). My Lynx charger stopped outputting the full voltage and I've had MULTIPLE Sherman chargers to bad. That's the first place I'd check. And the Lynx has a Smart BMS. Use it. What does the BMS say about all the cells? 1 Quote Link to comment Share on other sites More sharing options...
locoforeuc Posted August 25 Share Posted August 25 Hi guys, it was definitely my bad quality stock charger. I have received my Pidzoom fast charger and everything charges normally. I have adjusted the voltage correction to show 151.2V when all cells are approx. ~4.195V. I haven't had a BR or BL flash on screen since. Lynx works and rides as it should. Thanks for all your help! Quote Link to comment Share on other sites More sharing options...
Timwheel Posted September 8 Share Posted September 8 I also have the same problem, BL is displayed and I have 0.113v unbalance on the left pack. My wheel has been received new and only has 8km on it... Quote Link to comment Share on other sites More sharing options...
Rawnei Posted September 9 Share Posted September 9 17 hours ago, Timwheel said: I also have the same problem, BL is displayed and I have 0.113v unbalance on the left pack. My wheel has been received new and only has 8km on it... Make sure the charger is not outputting more than 151.2V alternatively and easier flash the latest Lynx firmware and set charging control to 151V, drain the wheel a bit from full and charge it and to let it balance, repeat this couple of times, if everything is all and well then the delta between the cells should decrease, anything below 50mV is fine, mine is around 15mV. Quote Link to comment Share on other sites More sharing options...
Timwheel Posted September 9 Share Posted September 9 The charger was properly set to 151.2v (I think they got the message ! My wheel is a few weeks old). I've limited charge to 150.5 on the app already also I went for a quick ride and after a night on the charger it went down to 0.017v for each side so no issues in the end, just strange the discrepancy was so wide ! 1 Quote Link to comment Share on other sites More sharing options...
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