Bastjan Knieps Posted January 18, 2019 Share Posted January 18, 2019 hello people have the following problem: I have a ninebot one s2 When a battery pack, the BMS broke the ninebot recognizes the battery is no longer. I have tested the individual cells and they have full power now there is a BMS to buy or something similar that the ninbot also recognizes or is there the original also to buy please send me the links Sorry for my english is from translator Quote Link to comment Share on other sites More sharing options...
Bastjan Knieps Posted January 18, 2019 Author Share Posted January 18, 2019 which Battery Management system I can take as a replacement because the original is not to buy. that is also recognized in the system Quote Link to comment Share on other sites More sharing options...
MRN76 Posted January 19, 2019 Share Posted January 19, 2019 Connect to the wheel, select firmware v7.6.0 no bms and press the button flash fw Quote Link to comment Share on other sites More sharing options...
Bastjan Knieps Posted January 19, 2019 Author Share Posted January 19, 2019 Hello where can I download the app where can i get the code for the app how much is he paying? Quote Link to comment Share on other sites More sharing options...
MRN76 Posted January 20, 2019 Share Posted January 20, 2019 Link is in that post. To change the firmware to 7.6.0 code you do not need to purchase code. Quote Link to comment Share on other sites More sharing options...
Bastjan Knieps Posted January 20, 2019 Author Share Posted January 20, 2019 Hello thanks for the information can the app also make the ninebot one s2 faster have a question I also have a ninebot es2 you can do that with the app synonymous faster If so, what does the code cost and can I use it for both? I would also be prepared to pay something Quote Link to comment Share on other sites More sharing options...
MRN76 Posted January 20, 2019 Share Posted January 20, 2019 S2 can be done faster through this application. For the price it costs 30$. But vass first you need to deal with bms Scooters ES2 is engaged in another person, he is working on a remote firmware (the product is not ready yet). https://mimod.ru/en_US/esmax/ Quote Link to comment Share on other sites More sharing options...
Bastjan Knieps Posted January 21, 2019 Author Share Posted January 21, 2019 ok I have removed the bms at the one battery and infected with the ninebot set without bms and then flashing the firmware by the app finish then the battery would have to work without bms or I saw today that the BMS is defective It annoys me that I can only drive with a battery and I also want to drive much faster then the battery would have to work without bms or Quote Link to comment Share on other sites More sharing options...
Bastjan Knieps Posted January 24, 2019 Author Share Posted January 24, 2019 have applied the program several times no bms but it does not work anyway Quote Link to comment Share on other sites More sharing options...
MRN76 Posted January 24, 2019 Share Posted January 24, 2019 What does not work? What error is the wheel writing? The speed is limited to 10kmch and an error blinks on the diode backlight? Quote Link to comment Share on other sites More sharing options...
Bastjan Knieps Posted January 25, 2019 Author Share Posted January 25, 2019 Hello a battery has no bms a battery has bms with the original battery I have to remove the bms cable there the original program then recognizes both batteries not but I can still drive with both batteries unfortunately it only drives 18 kmh why does not it drive 24 kmH? Can I now do something that drives 24 kmh? Can I now buy your code that I can drive faster or does not work I would like to be as fast as possible here are a few photos https://imgur.com/a/3x1opjj Quote Link to comment Share on other sites More sharing options...
MRN76 Posted January 26, 2019 Share Posted January 26, 2019 Hey. I will make you a code for changing the model. Absolutely without bms is impossible. Is it dangerous. You need to purchase any BMS 15S for lithium-ion 3.7v batteries.Link to BMS as an example of what you need. You also need to connect the contacts for charging. In the 4 pin connector is black and red wires. But it is better to withdraw separately from the charging port of the wheel. Quote Link to comment Share on other sites More sharing options...
Bastjan Knieps Posted January 26, 2019 Author Share Posted January 26, 2019 ok I will order it as soon as I have it and everything is soldered I'll call you again thanks Quote Link to comment Share on other sites More sharing options...
Andy504504 Posted September 12, 2020 Share Posted September 12, 2020 On 1/19/2019 at 3:45 AM, MRN76 said: Connect to the wheel, select firmware v7.6.0 no bms and press the button flash fw Hi . I have the same problem whit my battery pack not showing bms information in the app. I’m limited to 10 km/h , blinking rear led and no Leda lights. I’m needing your help to change the firmware to one whit no bms but when I use your app always ask me for the code. Could you help me whit that? Quote Link to comment Share on other sites More sharing options...
OneLeg Posted September 15, 2020 Share Posted September 15, 2020 Whilst it is good to get rid of the Ninebot BMS . the ninebot BMS built in obsolescence is bad. It draws to much power and if you don't charge your unicycle for a few months it may never charge again... I think the BMS should be replaced with a generic 15S BMS to blaance charge maybe use one even one of those with bluetooth. I think that the other connector there must be some charge voltage to feed into the BMS.... The big question is can we put 30 cells in there somehow.... and build a 2P15S Quote Link to comment Share on other sites More sharing options...
redsnapper Posted September 19, 2020 Share Posted September 19, 2020 (edited) do u wanna burn down ur house? or destroy ur batts via overdischarge? no bms - not safe imo... Edited September 19, 2020 by amelanso Quote Link to comment Share on other sites More sharing options...
litewave Posted September 19, 2020 Share Posted September 19, 2020 (edited) How to build a safe and better lithium battery WITHOUT a BMS Do you NEED a BMS for DIY Li-ion Batteries? Why not use a balance charger like the one below? It's well regarded in the drone community. You'll have to solder charging wires to the cells, but this is not hard to do if you're careful. Edited September 19, 2020 by litewave Quote Link to comment Share on other sites More sharing options...
redsnapper Posted September 19, 2020 Share Posted September 19, 2020 (edited) good vid - caveat - rc & drone batts hv much less energy to discharge than packs in ebikes/euc! The hobby charger he recommends is limited to 8S packs so I am not sure how this can be easily used for the kinds of packs used in EUC. His ebike setup required him to split up his packs into smaller ones - this guy is obviously very skilled - beyond what most DIYers can tackle safely. I agree that bms shld provide data abt state of batts that can be easily queried and hopefully this will become part of standard implementations and available via bluetooth. But those simply bypassing bms without a solid understanding of how to mitigate risk are literally playing with fire - one that is hard to put out! and not to be alarmist but rather simply to remind of how quickly li-on meltdown happens. Unless you really know your stuff, and even then, bypassing bms is very risky business! Edited September 21, 2020 by amelanso Quote Link to comment Share on other sites More sharing options...
redsnapper Posted September 21, 2020 Share Posted September 21, 2020 On 9/15/2020 at 2:21 PM, OneLeg said: Whilst it is good to get rid of the Ninebot BMS . the ninebot BMS built in obsolescence is bad. It draws to much power and if you don't charge your unicycle for a few months it may never charge again... I think the BMS should be replaced with a generic 15S BMS to blaance charge maybe use one even one of those with bluetooth. I think that the other connector there must be some charge voltage to feed into the BMS.... The big question is can we put 30 cells in there somehow.... and build a 2P15S @smallexis has some very cool batt mods for adding to 9bots Quote Link to comment Share on other sites More sharing options...
smallexis Posted September 24, 2020 Share Posted September 24, 2020 On 9/15/2020 at 7:21 PM, OneLeg said: The big question is can we put 30 cells in there somehow.... and build a 2P15S NO, except for 16" ninebot one, all ninebot products need to be connect to BMS with FW specific for 9Bot. In case of a generic or a lack of BMS, the mother board will not recognize the battery and will not work normally ( low speed limit or impossible to use) that's the way for 9bot to be sure to sold only branded (and expensive) battery... 1 Quote Link to comment Share on other sites More sharing options...
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