Thank for your vid . I have the same problem it refuse to charge so i gave it a direct cables to the ports where it says ch+ and ch- and the charger doesnot turne to red
@@cotolax7302 when i did the charger start to blink red and the green was still on the only ports that does't blink is the ch+ and ch- so i think i have a very low battery since it stayed inactive for a long time i might try to give it a 12v and hope it will accepte 42v. I will keep you updated
On the top and bottom of the battery. When you follow the red and black cable from the BMS at one point they end on different sides into the battery. In my opinion it’s the best way to charge it there because you can fix your own cable. If you want to know how i got the voltage -> I had an modelbuild charger for an old airplane. With that i checked that there is only a low current flow coming out. So if you want to do it on your own check if there isn’t to much voltage and current flow on the own charger.
Update - I didn’t have a 30v charger, so I connected two 18v Dewalt drill batteries in series and connected that to the + to the red terminal under the battery and the - to the black terminal. These terminals have heat shrink wrapping bur I was able to poke the wire down it to make the connection. I then got a multimeter on the B+ and B- terminals on the Battery management circuit board and I could see the battery voltage rising. When it got to about 25v, I put the battery back in the bike and then plugged in the charger. The bike is now charging on its own and now works. Your video provided an excellent guide and I had to solder the terminal in the control tube as you explained. I guess the battery voltage dropped below the threshold for the battery management system (it was only 4v) so the jump start worked. Many thanks for your video😊
Thanks for the video!
Thank for your vid . I have the same problem it refuse to charge so i gave it a direct cables to the ports where it says ch+ and ch- and the charger doesnot turne to red
so you have to connect it to B+ and B- for direct connect
@@cotolax7302 when i did the charger start to blink red and the green was still on the only ports that does't blink is the ch+ and ch- so i think i have a very low battery since it stayed inactive for a long time i might try to give it a 12v and hope it will accepte 42v. I will keep you updated
Where exactly did you connect the + and - pins to when charging?
On the top and bottom of the battery. When you follow the red and black cable from the BMS at one point they end on different sides into the battery. In my opinion it’s the best way to charge it there because you can fix your own cable. If you want to know how i got the voltage -> I had an modelbuild charger for an old airplane. With that i checked that there is only a low current flow coming out. So if you want to do it on your own check if there isn’t to much voltage and current flow on the own charger.
Do I need a 30v charger?
I would recommend to charge the bike first with lower voltage but all in all when you normally charge it, you take a 36V adapter
Update - I didn’t have a 30v charger, so I connected two 18v Dewalt drill batteries in series and connected that to the + to the red terminal under the battery and the - to the black terminal. These terminals have heat shrink wrapping bur I was able to poke the wire down it to make the connection. I then got a multimeter on the B+ and B- terminals on the Battery management circuit board and I could see the battery voltage rising. When it got to about 25v, I put the battery back in the bike and then plugged in the charger. The bike is now charging on its own and now works.
Your video provided an excellent guide and I had to solder the terminal in the control tube as you explained. I guess the battery voltage dropped below the threshold for the battery management system (it was only 4v) so the jump start worked.
Many thanks for your video😊
@@idindustrialsupplieswirral6424thanks for your kindness