Popular Post Seba Posted August 18, 2019 Popular Post Share Posted August 18, 2019 Hello, I did it! My new personal best of single, daily ride - 214 kilometrs (133 miles) on King Song KS-18XL. Of course I had to charge my battery three times during my trip. Started at 8:30 AM and finished at 9:45 PM. 13 hours in total, almost 9 hours riding. It was epic adventure and great experience, but far from being easy. During my ride I charged my wheel with 9 amps. Most of the time I maintained 25 km/h (15 mph). KS-18XL performed well, without a single glitch. Detailed record is available at https://euc.world/tour/577799012031245 And here are examples of road types & surface I succesfully ridden with KS-18XL: 12 4 Quote Link to comment Share on other sites More sharing options...
ir_fuel Posted August 18, 2019 Share Posted August 18, 2019 Did you use multiple connectors for that 9A charge? Quote Link to comment Share on other sites More sharing options...
Seba Posted August 18, 2019 Author Share Posted August 18, 2019 8 minutes ago, ir_fuel said: Did you use multiple connectors for that 9A charge? Yes, I use both charging ports as each is rated for 5 amps only. 1 Quote Link to comment Share on other sites More sharing options...
ir_fuel Posted August 18, 2019 Share Posted August 18, 2019 Just now, Seba said: Yes, I use both charging ports as each is rated for 5 amps only. What charger do you have? Quote Link to comment Share on other sites More sharing options...
Seba Posted August 18, 2019 Author Share Posted August 18, 2019 9 minutes ago, ir_fuel said: What charger do you have? I use Electrony C1000 (http://www.electrony.cn/index.php/en/products-4/c1000-900watts-charger) with some custom modifications like adjustable current limit, detachable charging cable and charging parameters monitoring: 2 Quote Link to comment Share on other sites More sharing options...
ir_fuel Posted August 18, 2019 Share Posted August 18, 2019 Nice. did you modify it? 1radwerkstatt also sells chargers but they do 5A max. Quote Link to comment Share on other sites More sharing options...
Seba Posted August 18, 2019 Author Share Posted August 18, 2019 4 minutes ago, ir_fuel said: Nice. did you modify it? 1radwerkstatt also sells chargers but they do 5A max. Yes and I will post details about this modification soon. 5 amps is a "standard" among fast chargers, as this is quite safe and universal value for most of the EUCs. However KS-18L/XL can be charged with currents up to 10 amps without any significant impact on battery life. 1 Quote Link to comment Share on other sites More sharing options...
ir_fuel Posted August 18, 2019 Share Posted August 18, 2019 1 minute ago, Seba said: Yes and I will post details about this modification soon. 5 amps is a "standard" among fast chargers, as this is quite safe and universal value for most of the EUCs. However KS-18L/XL can be charged with currents up to 10 amps without any significant impact on battery life. Thanks. If I see it correctly the KS16X has the same battery? So it should be able to handle that too using 2 ports? Quote Link to comment Share on other sites More sharing options...
Seba Posted August 18, 2019 Author Share Posted August 18, 2019 7 minutes ago, ir_fuel said: Thanks. If I see it correctly the KS16X has the same battery? So it should be able to handle that too using 2 ports? I think so, but it also depends on electronics. There is so-called ideal diode circuit between charging ports and battery. In KS-18L/XL it is rated to 10 amps (but I suggest to limit charging current to 9 amps or even less, due to risk of overheating this circuit). I don't know if the same circuit is used in KS-16X, but probably is. The best way to check is to remove mainboard cover, connect charger and use thermal camera to check if any part of mainboard doesn't get hotter than 100 °C. Then limit charging current to a value that allows to maintain this temperature. Quote Link to comment Share on other sites More sharing options...
ir_fuel Posted August 18, 2019 Share Posted August 18, 2019 10 minutes ago, Seba said: I think so, but it also depends on electronics. There is so-called ideal diode circuit between charging ports and battery. In KS-18L/XL it is rated to 10 amps (but I suggest to limit charging current to 9 amps or even less, due to risk of overheating this circuit). I don't know if the same circuit is used in KS-16X, but probably is. The best way to check is to remove mainboard cover, connect charger and use thermal camera to check if any part of mainboard doesn't get hotter than 100 °C. Then limit charging current to a value that allows to maintain this temperature. I'll check with 1radwerkstatt. Quote Link to comment Share on other sites More sharing options...
ir_fuel Posted August 18, 2019 Share Posted August 18, 2019 Apparently the KS16X is rated for 2x5A. Would be nice to have 1 charger with 2 parallel outputs giving 8A in total, as to still have some margin. Quote Link to comment Share on other sites More sharing options...
ir_fuel Posted August 18, 2019 Share Posted August 18, 2019 So it's this one, but how did you manage to restrict the output current? https://www.aliexpress.com/item/32960968857.html Quote Link to comment Share on other sites More sharing options...
Seba Posted August 18, 2019 Author Share Posted August 18, 2019 3 hours ago, ir_fuel said: So it's this one, but how did you manage to restrict the output current? https://www.aliexpress.com/item/32960968857.html No, it's not the same charger. But the one you've linked can also be equipped with current regulation. Quote Link to comment Share on other sites More sharing options...
Jean eRide.ie Community Posted August 19, 2019 Share Posted August 19, 2019 (edited) wow that's very impressive, well done, I've been thinking of doing trips like that myself. The maximum I've done in one day I think was a somewhere between 80-95km. I'm selling my 18L to get a +1600wh EUC (most likely), this being one of the main reasons (long trips). 9A is OK without upgrading the cables? Edited August 19, 2019 by Jean Dublin Quote Link to comment Share on other sites More sharing options...
ir_fuel Posted August 19, 2019 Share Posted August 19, 2019 12 hours ago, Jean Dublin said: 9A is OK without upgrading the cables? Depends on who you ask Quote Link to comment Share on other sites More sharing options...
Jean eRide.ie Community Posted August 19, 2019 Share Posted August 19, 2019 (edited) 15 minutes ago, ir_fuel said: Depends on who you ask Haha I see, I guess they get hot, but well, maybe it also depends on if you're charging it outdoors somewhere very warm, or in a cold place. Edited August 19, 2019 by Jean Dublin Quote Link to comment Share on other sites More sharing options...
ir_fuel Posted August 19, 2019 Share Posted August 19, 2019 (edited) Yeah you can understand that an official seller will not take any risks, whilst experimentation and monitoring might show you can go higher. Edited August 19, 2019 by ir_fuel 1 Quote Link to comment Share on other sites More sharing options...
Seba Posted August 19, 2019 Author Share Posted August 19, 2019 17 hours ago, Jean Dublin said: wow that's very impressive, well done, I've been thinking of doing trips like that myself. The maximum I've done in one day I think was a somewhere between 80-95km. I'm selling my 18L to get a +1600wh EUC (most likely), this being one of the main reasons (long trips). 9A is OK without upgrading the cables? I use two paralell 20AWG cables and in theory, 20AWG is rated 3 - 4 amps. However in practice they don't get noticeably warmer. Only connectors get slightly warm, but nothing I should worry about. Quote Link to comment Share on other sites More sharing options...
Jean eRide.ie Community Posted August 19, 2019 Share Posted August 19, 2019 1 hour ago, Seba said: I use two paralell 20AWG cables and in theory, 20AWG is rated 3 - 4 amps. However in practice they don't get noticeably warmer. Only connectors get slightly warm, but nothing I should worry about. Are those the original cables? Quote Link to comment Share on other sites More sharing options...
Seba Posted August 19, 2019 Author Share Posted August 19, 2019 21 minutes ago, Jean Dublin said: Are those the original cables? No, I found them for sale in local Internet shop. 1 Quote Link to comment Share on other sites More sharing options...
Jean eRide.ie Community Posted August 19, 2019 Share Posted August 19, 2019 53 minutes ago, Seba said: No, I found them for sale in local Internet shop. I wonder how hard is to change the cables, is there any video up already? Quote Link to comment Share on other sites More sharing options...
Jerome Posted August 19, 2019 Share Posted August 19, 2019 On 8/18/2019 at 11:16 AM, Seba said: Yes, I use both charging ports as each is rated for 5 amps only. Congrats!! I have been contemplating doing a 150 km+ ride on my KS18L but chicken out as I was afraid that charging at high rates plus riding for hours might be too much for the batteries. You have given me new hope for a try. I respect those who aren't afraid to go fast, BUT, endurance riding is really where one's character is truly tested. Bravo!! 1 1 Quote Link to comment Share on other sites More sharing options...
jas3 Posted August 22, 2019 Share Posted August 22, 2019 Seba, You are a rockstar and an inspiration. Amazing ride!!! Congratulations!!!! jas3 1 Quote Link to comment Share on other sites More sharing options...
Seba Posted August 22, 2019 Author Share Posted August 22, 2019 On 8/19/2019 at 11:13 PM, Jean Dublin said: I wonder how hard is to change the cables, is there any video up already? Just basic soldering skills and few minutes to unsolder old cable wires from charger PCB and solder new ones. 1 Quote Link to comment Share on other sites More sharing options...
Meserias Posted August 22, 2019 Share Posted August 22, 2019 very nicely done... amazing sharp and clear photos as well if there were something to change (in my opinion) to 18XL is just to add another X..... KS18XXL (2100+Wh...) Quote Link to comment Share on other sites More sharing options...
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