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smallexis

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About smallexis

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    Advanced Member
  • Birthday 12/14/1977

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  • Location
    Nancy - FRANCE
  • EUC
    OW+; 9B1 Z10 ; RW GT16; 9B1 E+(750Wh) ; URBAN MCM4 600Wh custom shell ; Q3 and X3 clone for learning ; Zero 8 scooter ; Egret one scooter ; 9B mini Xiaomi

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  1. First step is to measure how much volt for each group cells. If it's under 2,5V chemical reaction is damaged and there is no interested in trying waking up cells.
  2. Battery problem, need to check all group of cells before to equilibrate or replace damaged ones
  3. This is the BMS used on 1480Wh version (size in centimeter), in many circumstances it is true that size is not the most important. But in this case, it must play anyway. Non-existent thermal diffuser, "balancing track" with tiny resistors, fortunately it is the motherboard that limits the level of battery discharge. But for the load, the cells are on their own. Just in oder to compare with original 1020Wh BMS (18cm x 13cm). HOW CAN THE SELLER SAY BALANCE FUNCTION IS LIKE IN OTHER BMS???
  4. just have a look at the ads over weight is not due to the BMS
  5. problem come from here, but I don't know the reason. Very strange
  6. Yes it's possible and interesting if you have a dead battery. an other possibility but their is a risk to hit the bottom of printed case and I don't know how to bring that solution safer.
  7. you're right, that's why I link pins 2 by 2 in order to use all 4 pins from this plug, it's easier to solder like that and better for electric and mecanic resistance.
  8. I choose GX12 because it's the same as charging plug, and because I can load the internal battery throught my external plug with high speed charger without problem. round shape of GX12 is easier to drill inside the shell than XT60 shape. (I have GX12 connector on my NINEBOT Z10 and on my OW+ too for same use) additionnal battery don't change anything for segway use (except the range) and my switch key is only for desactivate speed alarm
  9. 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...
  10. yes it's better to switch to output protection in order to be direclty on + and - battery poles
  11. This is the link for my first post for 9B1 DIY battery (on french forum but you can use a translator): https://forum.urban360.com/index.php?/topic/223-fabriquer-ou-plutôt-assembler-sa-propre-batterie-pour-9b1/ And you can read this post too : https://forum.urban360.com/index.php?/topic/1091-batterie-ninebot-one-hs/&do=findComment&comment=17515 Hope that will give you some help.
  12. Original BMS on 16 inch NINEBOT ONE model don't make the difference on number of parallel, you can add an other series with 15 cells without any problem. thank you for your humorous message even if a fall is never funny. Need to move my feet and to make some break to avoid problem.
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