Popular Post smallexis Posted August 1, 2016 Popular Post Share Posted August 1, 2016 2 2 Quote Link to comment Share on other sites More sharing options...
Scully Posted August 1, 2016 Share Posted August 1, 2016 You've squeezed it in with the mother board? Or your NB is haunted. Quote Link to comment Share on other sites More sharing options...
Popular Post smallexis Posted August 1, 2016 Author Popular Post Share Posted August 1, 2016 (edited) I have made an internal battery that I can link to the "normal" one in order to raise battery capacity without any external change. It was a very long and hard job. The BMS is put on motherboard's side, with many wires... Edited August 1, 2016 by smallexis 1 10 Quote Link to comment Share on other sites More sharing options...
Scully Posted August 2, 2016 Share Posted August 2, 2016 Are you sure you couldn't fit a few more in there? Quote Link to comment Share on other sites More sharing options...
smallexis Posted August 2, 2016 Author Share Posted August 2, 2016 Yes. According to me it's the maximum number of 18650 cells that I could put in both side of the shell. There is not enough place for 15 more cells (I have tested and it's not possible without cutting in plastic parts) 2 Quote Link to comment Share on other sites More sharing options...
Scully Posted August 2, 2016 Share Posted August 2, 2016 Quote Link to comment Share on other sites More sharing options...
Hunka Hunka Burning Love Posted August 2, 2016 Share Posted August 2, 2016 Open up the hub motor and sneak some cells into there! Fishing some extra wires in would be a trick though... Quote Link to comment Share on other sites More sharing options...
smallexis Posted August 2, 2016 Author Share Posted August 2, 2016 It's start to be difficult to find more place. But if I bought 1radwerkstatt battery upgrade kit I would have more than 1100Wh of capacity. 1 Quote Link to comment Share on other sites More sharing options...
Rotator Posted August 3, 2016 Share Posted August 3, 2016 Fantastic job! 1 Quote Link to comment Share on other sites More sharing options...
smallexis Posted August 3, 2016 Author Share Posted August 3, 2016 thank you. It was hard to put all wire inside but it's work very nice. I do my first try today and it's a real pleasure to not have to look to battery level after 20 km riding. 2 Quote Link to comment Share on other sites More sharing options...
Popular Post smallexis Posted February 10, 2017 Author Popular Post Share Posted February 10, 2017 see below screen shots of my best ride with my battery upgrade : not a world record but 44 km (from 100% to 21% of battery) with an average speed at 18,3km/h, it's not common for a 9B1 E+. 5 Quote Link to comment Share on other sites More sharing options...
Popular Post smallexis Posted March 11, 2017 Author Popular Post Share Posted March 11, 2017 Today, I have exceeded the 1600 km with my 9B1 and it has been more than 800km covered since the addition of my DIY internal battery. And everything still works wonderfully. 5 Quote Link to comment Share on other sites More sharing options...
smallexis Posted March 16, 2017 Author Share Posted March 16, 2017 close to the same distance than my record, but with a higher average speed. I have not raisen my maximum distance record (it is almost equalized with more than 43 km traveled) in 9B1 but I have an average speed up 20.5 km / h over the entire trip (realized only on cycle track) 2 Quote Link to comment Share on other sites More sharing options...
Hunka Hunka Burning Love Posted March 16, 2017 Share Posted March 16, 2017 (edited) Do you think you could build your own DIY 1Radwerkstatt battery pack if you just bought their larger control/battery box covers or printed them out yourself with a 3D printer? I like the OEM look though, and I think the added width of the box covers makes the wheel less sleek looking. I wonder if placing cells in the LED light channel would allow even more capacity. Would they fit? You might have a problem getting the annular light ring back on though, but maybe grinding some plastic away might work... Edited March 16, 2017 by Hunka Hunka Burning Love Quote Link to comment Share on other sites More sharing options...
smallexis Posted March 16, 2017 Author Share Posted March 16, 2017 29 minutes ago, Hunka Hunka Burning Love said: Do you think you could build your own DIY 1Radwerkstatt battery pack Yes of course 30 minutes ago, Hunka Hunka Burning Love said: printed them out yourself with a 3D printer with the modelisation program I would say yes, but I don't think they would give it for free 47 minutes ago, Hunka Hunka Burning Love said: I wonder if placing cells in the LED light channel would allow even more capacity. Would they fit? I've just try with one cell (I had to force for put it on place) and it's not a good solution because of a lack of space ("grinding some plastic" would not be enough) and the curved shape of the light ring is not adapted for 18650 cell's size. It was a nice idea but much more complicated than what I have done inside the shell. 1 Quote Link to comment Share on other sites More sharing options...
Hunka Hunka Burning Love Posted March 16, 2017 Share Posted March 16, 2017 I was just eyeballing it as it looked like there was enough room, but from your photos it looks to be too tight of squeeze. I wonder what happens to an 18650 cell if you were to bend it slightly in a tube / pipe bender? 1 Quote Link to comment Share on other sites More sharing options...
steve454 Posted March 16, 2017 Share Posted March 16, 2017 16 minutes ago, Hunka Hunka Burning Love said: I was just eyeballing it as it looked like there was enough room, but from your photos it looks to be too tight of squeeze. I wonder what happens to an 18650 cell if you were to bend it slightly in a tube / pipe bender? That's an interesting idea. Is it possible to put a curve in an 18650? Quote Link to comment Share on other sites More sharing options...
Hunka Hunka Burning Love Posted March 17, 2017 Share Posted March 17, 2017 It's probably not a good idea. I'd say grinding small spots in the Ninebot ring channel would likely be better if one wants to go that route. Bending a 18650 likely would result in the casing popping open or the end terminals going askew as it's not quite a hollow tube. All that inner stuff needs to go somewhere when the shape gets changed so it likely pops out the ends. It would be interesting to find out just for curiosity sake, but I wouldn't recommend doing it without some safety measures! 2 Quote Link to comment Share on other sites More sharing options...
steve454 Posted March 17, 2017 Share Posted March 17, 2017 (edited) 13 minutes ago, Hunka Hunka Burning Love said: Bending a 18650 likely would result in the casing popping open or the end terminals going askew as it's not quite a hollow tube. All that inner stuff needs to go somewhere when the shape gets changed so it likely pops out the ends. It would be interesting to find out just for curiosity sake, but I wouldn't recommend doing it without some safety measures! That goes without saying. I'm thinking a sandblasting cabinet with the gloves built in. Edited March 17, 2017 by steve454 2 Quote Link to comment Share on other sites More sharing options...
Popular Post smallexis Posted March 17, 2017 Author Popular Post Share Posted March 17, 2017 12 hours ago, steve454 said: That's an interesting idea. Is it possible to put a curve in an 18650? Interesting ----> Yes possible ------> Maybe safe -------------> No 4 Quote Link to comment Share on other sites More sharing options...
Hunka Hunka Burning Love Posted March 17, 2017 Share Posted March 17, 2017 2 hours ago, smallexis said: Interesting ----> Yes possible ------> Maybe safe -------------> No This could be on the T-shirt of my life! 3 Quote Link to comment Share on other sites More sharing options...
Popular Post esaj Posted March 17, 2017 Popular Post Share Posted March 17, 2017 (edited) 18 hours ago, Hunka Hunka Burning Love said: I was just eyeballing it as it looked like there was enough room, but from your photos it looks to be too tight of squeeze. I wonder what happens to an 18650 cell if you were to bend it slightly in a tube / pipe bender? 17 hours ago, Hunka Hunka Burning Love said: It's probably not a good idea. I'd say grinding small spots in the Ninebot ring channel would likely be better if one wants to go that route. Bending a 18650 likely would result in the casing popping open or the end terminals going askew as it's not quite a hollow tube. All that inner stuff needs to go somewhere when the shape gets changed so it likely pops out the ends. It would be interesting to find out just for curiosity sake, but I wouldn't recommend doing it without some safety measures! Never ever compress, puncture or bend the cells... the internals will react violently with air. The inner stuff will go "somewhere", like blow up in your face with nice flame Edited March 17, 2017 by esaj 5 Quote Link to comment Share on other sites More sharing options...
Hunka Hunka Burning Love Posted March 17, 2017 Share Posted March 17, 2017 I didn't say I was gonna do it! I'd leave that sort of thing to the professionals like Electroboom. Actually it would make for a nice viral video as I couldn't find anything about bending a 18650 online. 1 Quote Link to comment Share on other sites More sharing options...
Popular Post esaj Posted March 17, 2017 Popular Post Share Posted March 17, 2017 1 hour ago, Hunka Hunka Burning Love said: I didn't say I was gonna do it! I'd leave that sort of thing to the professionals like Electroboom. Actually it would make for a nice viral video as I couldn't find anything about bending a 18650 online. Don't know if there are videos about bending, but if you look for crushing lithium ion, there's lots. The cells don't always catch fire, sometimes they just get crushed, maybe with a little smoke or not even that, but at other times: I wouldn't try my luck to see whether they ignite or not 4 Quote Link to comment Share on other sites More sharing options...
Popular Post smallexis Posted June 19, 2017 Author Popular Post Share Posted June 19, 2017 (edited) Some news from my 9B1 DIY battery, yesterday I have drove 50km with a full charge Now I've use my internal battery for 1200 km and everything works perfectly. Edited June 19, 2017 by smallexis 4 Quote Link to comment Share on other sites More sharing options...
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