DavideTr Posted February 9, 2023 Share Posted February 9, 2023 Hi everyone, I've owned a Ninebot One S2 for several years, I customized this vehicle for my needs and I also installed a custom firmware. After driving 6066.3Km the motherboard decided to burn out, so I ordered a replacement one from Speedyfet. After assembling the new working motherboard, I discovered that it is not activated with the serial number and all the guides to activate it are old and do not correspond with today's reality. Nowadays how do I activate my "new" wheel? Thank you in advance 1 Quote Link to comment Share on other sites More sharing options...
osi Posted February 11, 2023 Share Posted February 11, 2023 I would try contacting @mrn762 on telegram. you should be very direct and concise when asking for help, as there's a language barrier and he's quite busy. Good luck! Quote Link to comment Share on other sites More sharing options...
DavideTr Posted February 11, 2023 Author Share Posted February 11, 2023 Luckily I managed to unlock the motherboard thanks to the help of a Russian guy who created an app called Ninetool. This app allows you to install custom firmware and unlock motherboards, even changing the serial number. However, after I activate the unicycle, it says from the original app that there are "abnormal readings from the BMS". I have to figure out if I made a mistake in inverting the batteries, or is it possible to swap them. Does anyone know if the batteries have a precise order (left / right) or does it not affect? 1 Quote Link to comment Share on other sites More sharing options...
pico Posted February 11, 2023 Share Posted February 11, 2023 I have a nicely working NB One S2. I don't think the left or right are differentiated. I may be that there is too much voltage difference between the packs. Try charging each pack in turn to full (by disconnecting the other) I have BMS version V1.1.9 The voltage difference between packs is less than 10 mv and my NB has 126 hours of working time! Quote Link to comment Share on other sites More sharing options...
DavideTr Posted February 15, 2023 Author Share Posted February 15, 2023 On 2/11/2023 at 10:42 PM, pico said: I have a nicely working NB One S2. I don't think the left or right are differentiated. I may be that there is too much voltage difference between the packs. Try charging each pack in turn to full (by disconnecting the other) I have BMS version V1.1.9 The voltage difference between packs is less than 10 mv and my NB has 126 hours of working time! In these days I have recharged each single cell (x60) with an external charger equipped with a display for correct balancing. Now all cells should be charged to the same level. Despite this, the problem persists. I will try leaving the battery packs connected to the vehicle and charging overnight.. This has never happened before I replaced the Motherboard 😢 1 Quote Link to comment Share on other sites More sharing options...
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