Rotan Posted August 25, 2021 Share Posted August 25, 2021 And when will it happen? The new ev car is coming on sale in China in september, with graphene batteries! Then it's euc turn right? What do you expect? I read that they have a longer lifetime and the recharge time is shorter, but more importantly, do they have a better weight / wh ratio and volume / wh ratio? Do you know anything about that? Because a slim and lite wheel with 1800w or more is what we need desperately in this moment. Is there hope? 1 Quote Link to comment Share on other sites More sharing options...
Tawpie Posted August 25, 2021 Share Posted August 25, 2021 just guessing here, but if they're super good, they'll show up in phones and computers and grid-scale systems first. we get the old and cheap-as-you-can-get-away-with stuff! 3 Quote Link to comment Share on other sites More sharing options...
Tawpie Posted August 25, 2021 Share Posted August 25, 2021 Although, I'd love to have a battery manufacturer and a wheel maker use us as crash test dummies... we're pretty tolerant of imperfect batteries, ask Fiskar what happens when your electric cars catch on fire. Quote Link to comment Share on other sites More sharing options...
yoos Posted August 25, 2021 Share Posted August 25, 2021 (edited) 15 minutes ago, Tawpie said: just guessing here, but if they're super good, they'll show up in phones and computers and grid-scale systems first. we get the old and cheap-as-you-can-get-away-with stuff! Agree -- the only cutting-edge tech in EUCs is the concept itself, but the components are usually budget choice. Hopefully, as the community and market grows, high-end eucs will be produced (luxury EUCs on one hand, pro racing ones on the other), showcasing what can be achieved. Lighter batteries are surely one of the exciting things, axial flux motors would be another. However, some things can be easily improved with todays technology already, borrowing from motoGP and other areas. You don't even have to invent or innovate, you simply need to spend more money: replace heavy steel parts (pedal hangers etc) with titanium; use magnesium rims and pedals etc. You could save a few kg this way immediately. E.g. you can take the dimensions of V12 steel pedal hangers, which weigh 1.2kgs total, and order 3D printed titanium replacements. The titanium version would weigh around 0.7kgs. The price for a single order, however, could be in the hundreds if not thousands of $ (if my estimates are correct). Edited August 25, 2021 by yoos 3 Quote Link to comment Share on other sites More sharing options...
..... Posted August 25, 2021 Share Posted August 25, 2021 (edited) If graphene batteries become cheap and over abundant, THEN we'll see them hit euc use. @yoos nailed it on the head. Technology is NOT what is limiting the euc and its ability to be of higher quality/more refined. Its all about the money. I suspect graphene batteries may prove a great thing. I also suspect that euc's will evolve a lot or dissapear before the wide implementation of said batteries. Edited August 26, 2021 by ShanesPlanet 1 Quote Link to comment Share on other sites More sharing options...
RagingGrandpa Posted August 25, 2021 Share Posted August 25, 2021 Presuming Li-Graphene retains the same cell voltage as NMC, new same-size cells would be easily compatible with existing EUC's... All it would take is @Jason McNeil to phone his battery builder and set a price https://forum.electricunicycle.org/topic/22147-ewheels-contracts-outside-company-for-custom-battery-packs/ Quote Link to comment Share on other sites More sharing options...
Paul A Posted August 25, 2021 Share Posted August 25, 2021 Japanese battery manufacturer Murata are making a claim that they will be mass producing small solid state batteries later this year. Only suitable for small wearable devices at this stage. Interesting to see if it eventuates or another claim that fails to deliver. Quote Link to comment Share on other sites More sharing options...
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