frosted.coot.scoot
100 µW
- Joined
- Mar 31, 2022
- Messages
- 8
Can someone please help me to kniow where i wire the charging port wires to a 350w 36 volt mntt brushless motor controller.
frosted.coot.scoot said:Can someone please help me to kniow where i wire the charging port wires to a 350w 36 volt mntt brushless motor controller.
The general assumption when buying a used ebike is that the battery iw worth zero, so you go in with an expectation of the cost to replace/rebuild it when considering the asking price.frosted.coot.scoot said:I recently picked up a decommisioned bird 2 scooter and am in the porocess of conversion. I went to measure the voltage on the output on the XT60 that connects to the controller main powersupply and I noticed that the voltage immediately began dropping. It was steadily going lower and lower. Eventually thge process halted and there of course was zero measureable voltage there. Is this normal? Has anyone else observed this? How do I get the battery to start outputting again?
Based on this picturefrosted.coot.scoot said:Indeed I do have a link for the controller I purchased. Here it is.
https://www.amazon.com/dp/B08J7Y9QQ8?psc=1&ref=ppx_yo2ov_dt_b_product_details
<snip>
There is not really any support info from Amazon where I bought the controller. There is no instructions that come with the controller.
I I have found out a few things relating to the first post or two that I made concerning the charging port and battery output voltage. I now know how and where to connect to the charging port of the scooter. I also got the battery to start outputting its correct voltage by performing a bypass on the BMS as demonstrated ina video I found that directly deals with the Bird 2 scooter. After soldering a bridge between B+ and P+,
I got the correct output voltage frm the battery pack. SO those two posts are now answered as I see it.
because *something* on the scooter must have a wireless connection to the phone to talk to the app for this to work to turn it on and off. The BMS is a logical enough place for this to be, since it would turn all power on and off.To start your ride, scan the Bird’s QR code with your app.
I can't think of anything on a normal controller and throttle that would cause this to work that way, regardless of wiring correctly or not, etc.I am now moving on to the issue that I am having which is that I am suppose to have a variable throttle, but after wiring the throttle to the controller I have some unexpected results. I thought the throttle was supposed to be the potentiometer type where the amount of throttle signal given to the motor is directly proportional to the amount of downward pressure your thumb places on the throttle lever. What I experience here is that the motor starts turning when I first depress the throttle lever to the full downward position. The wheel starts rotating at full throttle and even continues if the throttle lever is let to come back to its starting position. The motor will stay engaged at maximum until the throttle lever is once again depressed to the full throttle position.
Hit the throttle on the right to go and pull the brakes to slow.
What did it discharge to before you began charging it?frosted.coot.scoot said:SO I finally got the charger in from Amazon. Its an 84W 42V Charger and I started charging my first battery pack. After 7 hours however I am only getting like 6.23 Volts across the out put XT60.
I also have a bird 2 I'm having the same problem as u were but you had said u switch the blue and yellow wire coming from the throttle. I did the bypass and my battery is giving full power but it still dont work so I'm thinking I got to switch those wires if u can help me out really appreciate it and thank u again for this post toCan someone please help me to kniow where i wire the charging port wires to a 350w 36 volt mntt brushless motor controller.
You bought the same replacement controller? Was the self learning successful?I also have a bird 2 I'm having the same problem as u were but you had said u switch the blue and yellow wire coming from the throttle. I did the bypass and my battery is giving full power but it still dont work so I'm thinking I got to switch those wires if u can help me out really appreciate it and thank u again for this post to