shortcircuit911
1 kW
Hey cotemar, glad you're enjoying my build. Just curious, have you measured the top speed and range of your scooter, or are these specs posted on a website? They seem a bit embellished, that's why I'm asking.
onto your questions.
1)Yes I'm currently using the hub motor that came with the scooter. It's rated at 36v, but can take more voltage than 36v which is how I'm getting the high top speed. When you run a motor at a voltage higher than it's rated, that is called over-volting the motor.
2)Yes the two batteries are connected in series. When they are fully charged they are 25v, so pack voltage hot off the charger is 50v.
3) Yes the balancer (charger) is pretty fast. You need to have a powerful power supply running the balancer in order to charge your batteries at a high amperage. I have a 750w pc power supply at home that I run my balancer with, I typically charge at 3-5 amps (not too crazy). At work I have a 120w power adapter that only lets me charge at 1A which is super slow, luckily I'm there 8-12 hrs a day. The two large wires are where the main power comes from, the smaller wires are the balance leads, current is bled from these wires to keep the cells balanced while charging. If you search lipo balancers on the forum I'm sure you will find someone explaining it much better than I am.
4) Not sure what you mean by custom. He sells controllers that come in different sizes (number of MOSFETs). They are all programmable, so you can set parameters in the firmware like low voltage cut off and phase current to give a few examples. The size of the controller you need depends on the amount of current you want to push, Lyen would be able to answer any questions you have regarding his controllers. I have bought about 4-5 controllers from him and they have all performed very well, he provides excellent customer support and is very quick to respond to questions.
5) Yes it is entirely possible (and encouraged) for you to modify your scooter. I would recommend a lyen controller and 12s of lipo to start. But, it really depends on your goals and your budget. We are all here to help, so definitely start a thread and we can walk you through it and answer any questions you may have. Hope this helps.
onto your questions.
1)Yes I'm currently using the hub motor that came with the scooter. It's rated at 36v, but can take more voltage than 36v which is how I'm getting the high top speed. When you run a motor at a voltage higher than it's rated, that is called over-volting the motor.
2)Yes the two batteries are connected in series. When they are fully charged they are 25v, so pack voltage hot off the charger is 50v.
3) Yes the balancer (charger) is pretty fast. You need to have a powerful power supply running the balancer in order to charge your batteries at a high amperage. I have a 750w pc power supply at home that I run my balancer with, I typically charge at 3-5 amps (not too crazy). At work I have a 120w power adapter that only lets me charge at 1A which is super slow, luckily I'm there 8-12 hrs a day. The two large wires are where the main power comes from, the smaller wires are the balance leads, current is bled from these wires to keep the cells balanced while charging. If you search lipo balancers on the forum I'm sure you will find someone explaining it much better than I am.
4) Not sure what you mean by custom. He sells controllers that come in different sizes (number of MOSFETs). They are all programmable, so you can set parameters in the firmware like low voltage cut off and phase current to give a few examples. The size of the controller you need depends on the amount of current you want to push, Lyen would be able to answer any questions you have regarding his controllers. I have bought about 4-5 controllers from him and they have all performed very well, he provides excellent customer support and is very quick to respond to questions.
5) Yes it is entirely possible (and encouraged) for you to modify your scooter. I would recommend a lyen controller and 12s of lipo to start. But, it really depends on your goals and your budget. We are all here to help, so definitely start a thread and we can walk you through it and answer any questions you may have. Hope this helps.