Tinkererboi Posted July 2, 2020 Share Posted July 2, 2020 On 1/18/2019 at 9:57 PM, Seba said: An external battery (in any form), optionally connected to the unicycle is not such a simple matter. If the internal battery has a different voltage than the external battery, there is a risk of severe sparking during connection, and consequently there is risk of burns to the user. In addition, battery that is more charged will charge the less charged one, which can cause the battery with a lower voltage to exceed the permissible charging current limit significantly. This can result in damage to the battery or even in a fire. These problems could be solved by using additional special electronics inside the EUC. However, this would increase the cost of the device, while reducing its reliability. Thanks for saying this, @Seba hearing it from possibly one of the best known pioneer and experts in the euc community really helps give credibility to this knowledge. A small nobody like me telling people not to mess with batteries only ends up with doubt from the people I try to warn. Preventing fires is not your own personal problem guys, it's a responsibility from each one of us early adopters to help prevent EUCs from being banned. Each one of us play the part when we are out riding to be an ambassador for EUCs to have a permanent place in society. Let's not deny future generations their right to enjoy this amazing technology. 1 Quote Link to comment Share on other sites More sharing options...
EUChristian Posted July 4, 2020 Share Posted July 4, 2020 I thought it would charge while riding. Seeing two opinions...anyone actually have this? Quote Link to comment Share on other sites More sharing options...
null Posted July 4, 2020 Share Posted July 4, 2020 It charges while riding, as shown by mr flex on YouTube. Quote Link to comment Share on other sites More sharing options...
Aaron Shurtliff Posted July 7, 2020 Share Posted July 7, 2020 Do we have a link on where to purchase external batteries? Not sure where to find it. Quote Link to comment Share on other sites More sharing options...
RockyTop Posted July 7, 2020 Share Posted July 7, 2020 (edited) @Aaron Shurtliff I would go to the eWheels website and leave a message. They might be swamped with other emails right now so be patient. They have quite a few items available that are not on the website. ............One more thing. The password we use to get the special hidden items is “ Do you have” Then state the item you want. Edited July 7, 2020 by RockyTop 2 Quote Link to comment Share on other sites More sharing options...
DragonFZ Posted August 16, 2020 Share Posted August 16, 2020 I ride with OneWheel DFW. A few have Vamp setup. One guy, "the Professor" did an estimate for me. The pic is his setup... (2) 10s2p 36 volt, 230 watt-hr battery each, 460WH in total. About 95% efficient transfer of power to the output application. The circuit board in the pic is a Voltage Booster. He recommend, I would need (4) 10s2p in parallel to the booster to get close to full charge voltage (84 v) for 920WH. "I’m only bumping up from ~36 volts to ~60 volts, though. You may lose some more than 5% going to 80 volts. I built the voltage booster for $75. The batteries were $75 each. So $375 for all to get to 920 Wh." I didn't know the KS S18 has 21700 batteries. 2 Quote Link to comment Share on other sites More sharing options...
Tinkererboi Posted August 17, 2020 Share Posted August 17, 2020 4 hours ago, DragonFZ said: I ride with OneWheel DFW. A few have Vamp setup. One guy, "the Professor" did an estimate for me. Love your setup! This seems like a safe "charge and ride" style configuration, essentially a powerbank with constant voltage and proper current limit. Might change my mind about external power sources being unsafe. Is "Vamp" Onewheel lingo for this kind of powerbank style setup? Quote Link to comment Share on other sites More sharing options...
BondZero07 Posted August 17, 2020 Share Posted August 17, 2020 Fast charge during ride possible or not ? Work only with KingSong (S18 for exemple) or also InMotion (V11 ...) ? Quote Link to comment Share on other sites More sharing options...
RagingGrandpa Posted August 17, 2020 Share Posted August 17, 2020 16 hours ago, DragonFZ said: The pic is his setup... 460WH in total. Right, so the KS-Power is the same thing, but nearly twice the battery, and more compact. An attractive product; hope it proves reliable! 11 hours ago, Tinkererboi said: Is "Vamp" Onewheel lingo for this kind of powerbank They do love their jargon... No. "Vampire mode" is what they call parallel connection of two packs of the same voltage (typically with no protection or current-limiting device in between). This is "Charge and ride." 1 Quote Link to comment Share on other sites More sharing options...
Tinkererboi Posted August 17, 2020 Share Posted August 17, 2020 29 minutes ago, RagingGrandpa said: No. "Vampire mode" is what they call parallel connection of two packs of the same voltage (typically with no protection or current-limiting device in between). This is "Charge and ride." Ahh, good to know. Thanks for clearing that up! Quote Link to comment Share on other sites More sharing options...
DragonFZ Posted August 17, 2020 Share Posted August 17, 2020 5 hours ago, RagingGrandpa said: This is "Charge and ride." Thanks... Charge and ride... so far he have been doing it on his OneWheel for 2 years now and have been building them for other riders in the group. I never needed one, but planning on a possibility of getting S18 Quote Link to comment Share on other sites More sharing options...
misterdalto Posted August 13, 2021 Share Posted August 13, 2021 My S18 Battery/Range Project Update: I was able to locate and purchase the external power bank made by king song. This product is not available by any seller online, directly. Images and details of this product lacking at best - reports from 2019, and as recent at june 2020 show that it is only available by email via ewheels for $650. As of august 2021, it can be purchased via email to sales@ewheels.com for a cost of $550 for 780wh. Product Name: KS-Power Power bank is 780wh with an averaged ~650wh of usable battery discharged to the S18 (due to efficiency losses). Officially functions as a trickle charge @ 3a. Anecdotes online report upwards of 5a (though I’m satisfied with 3a). It will obviously not be usable for direct power draw, but will extend range on the S18 to provide a continuous charge while riding or at stops. For me, this will bring my total nominal battery capacity to: 1880wh (1100wh internal S18 battery + 780wh external power bank) With a usable battery capacity of ~1750wh (due to efficiency losses, discharged capacity is estimated at ~650wh from the 780wh battery)Real World Range Breakdown: My average energy consumption = ~25.5wh/mi S18 internal battery @ 1100wh/25.5wh per mi = ~43-45 miles Power Bank external battery @ 650wh/25.5wh per mi = ~25-26 milesReal World Range: S18 and Power Bank @ 1750wh/25.5wh per mi = ~68-70 miles (60 miles conservatively) 1 Quote Link to comment Share on other sites More sharing options...
5Cauac Posted August 13, 2021 Share Posted August 13, 2021 2 hours ago, misterdalto said: My S18 Battery/Range Project Update: I was able to locate and purchase the external power bank made by king song. This product is not available by any seller online, directly. Images and details of this product lacking at best - reports from 2019, and as recent at june 2020 show that it is only available by email via ewheels for $650. As of august 2021, it can be purchased via email to sales@ewheels.com for a cost of $550 for 780wh. Product Name: KS-Power Power bank is 780wh with an averaged ~650wh of usable battery discharged to the S18 (due to efficiency losses). Officially functions as a trickle charge @ 3a. Anecdotes online report upwards of 5a (though I’m satisfied with 3a). It will obviously not be usable for direct power draw, but will extend range on the S18 to provide a continuous charge while riding or at stops. For me, this will bring my total nominal battery capacity to: 1880wh (1100wh internal S18 battery + 780wh external power bank) With a usable battery capacity of ~1750wh (due to efficiency losses, discharged capacity is estimated at ~650wh from the 780wh battery)Real World Range Breakdown: My average energy consumption = ~25.5wh/mi S18 internal battery @ 1100wh/25.5wh per mi = ~43-45 miles Power Bank external battery @ 650wh/25.5wh per mi = ~25-26 milesReal World Range: S18 and Power Bank @ 1750wh/25.5wh per mi = ~68-70 miles (60 miles conservatively) So how big is this battery, what does it weigh, and is it mountable or is this something you throw in a back pack with a cord hanging to the charge port?? Do you feel $550 is worth the extra 20+ miles? 1 Quote Link to comment Share on other sites More sharing options...
RagingGrandpa Posted March 8, 2022 Share Posted March 8, 2022 A while later... seems like this product is a flop I think because: Limited utility No support for 100V EUCs, which are prevalent now. And since 2020, lots of EUC's became available with >2600wh packs, so large that even a 'regular' 1800wh EUC plus a power bank can't match their range. (If your buddies on 2700wh EUC's want to ride in a group, you'll hold them back). And many EUC's don't permit charge-and-ride (Inmotion and Veteran, for example). So the target audience is just 84V Gotways and Kingsongs. "clunky and fussy" KS-Power is a heavy metal rectangle with sharp corners, not very comfortable when tossed in a backpack. Activating it is not "flip a switch" easy... you must select the output settings each time you turn it on, and if you mess up, it doesn't charge. The connector adapter cable is huge, floppy, and challenging to mount in a secure way. (If you still use and appreciate your KS-Power here in 2022, please reply ) Quote Link to comment Share on other sites More sharing options...
Tawpie Posted March 8, 2022 Share Posted March 8, 2022 I wonder if the better half would mind having a big square heavy thing in the pannier of the e-bike... probably. Quote Link to comment Share on other sites More sharing options...
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