Endless Sphere

I’m building a reverse trike. I want to lace the 36 hole bicycle hub with a motorcycle rim. The plan is to use bicycle spokes for the rim. I know from searching this forum that i need to have some spacer to get the nipples to seat properly in the motorcycle rim. But I can’t find info on the length o...

I want to make the correct settings. what do these parameters mean in each window? how do they work? 2.jpg I do not know what F, U, and D are, but i have figured out the others through testing. IO sets up the assigned function/wire for Output only, like the hall or RPM line. The SW sets the assigne...

Hello group, I have a dead votol em150sp controller Can not respond to the pc program please someone if anyone has the bin file of the Votol em150sp Can from Siaecosys send it to me by miguelangel891123@gmail.com thanks. I already sent the firmware. But I can’t guarantee that it will work. I got it...

PrashanBhatta wrote: ↑

Feb 22 2021 12:51am

Paulflieg wrote: ↑

Feb 19 2021 12:44pm

In calibration mode, on page 3

Could you provide me this software? because in the version I m using, there is no such setting for temperature.

I send the firmware to your email.

Thank you for your reply. I’ve tested the resistance between the frame and the battery, the resistance is 0.5 to 0.6 mega ohm. I have not connect the controller or the hub motor. Is there anything that should be fixed? Not really. That sounds pretty normal. You could try hooking up the controller a...

Maybe it's a stupid test, but if you take the batteries out of the frame and put them on something next to the bike, is the voltage still there? Thank you for your reply. My battery is placed within the frame and also have 3 different place that is connected at every parallel cell group, so it beco...

This morning something marvelous but mysterious happened. When I import new parameters file to the controller, all pf the sudden the bike is normal again. Even though all the parameters match the previous setting. It’s weird, but i’m glad that it all worked out. Has anyone here ever experienced some...

Screen shots of your controller's setpoints. Type of throttle, hall or potentiometer? Throttle output voltage readings. Battery particulars. New build or running for some time? The more information, the better... Regards, T.C. Thank you for your reply. The bike last controller was burned because of...

I have a problem with my Votol EM100 controller. When I give it a full throttle, the throttle open up just a little bit, or sometimes it starts normal for a few second and than the speed goes down to a very low speed. My setup is qs205 2000w 72v with votol em100 I have check the throttle voltage, ha...

My setup is QS205 2000w 72v hub motor with Votol EM100 controller. The problem is when i give it a full throttle, it’s only open the throttle a little bit, or sometimes is start well for a few seconds and then the throttle seem to wind down to a very low speed even when i give it a full throttle. I ...

Try measuring resistance between the frame and battery negative. If you see a low reading, like ohms, you have a short. If the meter shows high, more than megohms, then it's good. Your meter is very sensitive and you can get stray readings like that just from moisture or stray resistance in the con...

Try measuring resistance between the frame and battery negative. If you see a low reading, like ohms, you have a short. If the meter shows high, more than megohms, then it's good. Your meter is very sensitive and you can get stray readings like that just from moisture or stray resistance in the con...

The bms is not mounted on the frame and it is well insulated. The contactor is mounted to the frame, but when I dismount the contactor, the voltage remained the same.

I don’t use ground on the frame.

Sorry for the double post.

Thank you for your reply.

Thank you for your reply

Thank you so much for your reply. I will check the amp current flow...

My setup is 2000w hub motor with 20S12P and 20S9P battery connected parallel in each of the battery parallel connection to a single bms, the bms is connected to a contactor. I have not connect the controller and the hub motor. The last time my controller blew because of a pinch from the main positiv...

My build is 2000w hub motor with 20S12P and 20S9P battery connected in parallel in each cell parallel group. The two battery is connected to one bms that connected to the contactor. I have not connect the controller and the hub motor at all. The problem is I have a voltage reading when I connect my ...

Are you planning on creating a relatively permanent pack from the two sub-packs, keeping them in parallel during use most times? Yes, that’s the idea. Then connect the 1S cell-level groups between packs, and just have one BMS manage it as one integrated pack for monitoring and balancing if you use ...

id adjust my charger voltage to 4.15v/cell. 20s would be 83v instead of 84v or 4.1v/82v and charge both packs while theyre paralleled together. that way the bms wont become an issue while charging you can always balance charge the packs separately once a month or whenever, are you still using the r...

id adjust my charger voltage to 4.15v/cell. 20s would be 83v instead of 84v or 4.1v/82v and charge both packs while theyre paralleled together. that way the bms wont become an issue while charging you can always balance charge the packs separately once a month or whenever, are you still using the r...

Chalo wrote: ↑

Dec 04 2020 12:22am

Charge them together (in parallel) and discharge them together. That will keep them operating as a single pack.

Yes. My question is how to wired the charger on the 2 battery.

john61ct wrote: ↑

Dec 04 2020 12:40am

Are you planning on creating a relatively permanent pack from the two sub-packs, keeping them in parallel during use most times?

Yes, that’s the idea.

I’m sorry if this is a newbie question. I have 2 li ion battery, 20S9P and 20S12P. They have a different type of bms. The 20S9P battery have a common - for charging and the 20S12P have a different - for charging. If i parallel the 2 batteries, how do I connect the charger? Because if I parallel the ...

I use a "Hawkeye 808" to monitor the input current and stop the charge at undercurrent ( of the line) or overcurrent ( of the line). Trips a relay disconnection at a certain mA adjustable. Does it work for DC ? The datasheet doesn't say. Seems to imply AC (since it is line powered by indu...

I believe the problem with these switched inductor and capacitor balancers is that the balancing current is proportional to the voltage difference. So my understanding is that the balance current tapers off and it gets quite slow as the cell voltages get closer. I think so too, just like a charger.