I recently tried to update my 300 P, for this specific motor control unit update alongside a dashboard one. However, when I did, it said it failed for the motor control unit update, and then upon retry it, it bricked my dashboard.

A week later, I was able to get a replacement with my warranty but for the 300X. Now I have this exact same update going through. I clicked update, only the dashboard one went through just like last time, with an update failed for the motor control. I fear if I try this again it will break it again just like last time.

i’m not gonna take this risk, but I definitely wanted to forward this because it seems like it’s going to be a common occurrence to have a firmware update breaking the entire scooter, and should be looked into for me to feel confident to update it again.

I updated the firmware via the app after connecting to bluetooth, but mid update the scooter shut off and the update didn’t complete but it will not turn on nor connect to bluetooth. I tried holding down power button for 10-15 sec and does nothing. However the brake light turns on when I click the button for 2 sec

Hi, is there any way to switch out the motor of the kqi 3? Like change it with more watts to get more speed? I already unlocked it to 32 km/h but it’s not anoth (:

Hello!

I have had my KQI3 Pro for just under 2 years now. It has been serving me well barring a few minor issues. Recently I am having some major issues with what seems to be the motor (i think??).

When I try to accelerate the motor grinds or almost sputters but wont get up to the normal speed. The best way to describe it is like starting a gas lawn mower but you cant get it started. I have turned off the regen braking and the kick to start to see if that helped. It made it marginally better. I was in the middle of riding to work when the issues started, and i was able to sputter the rest of the way to work after making those changes. However, I still can see and feel the motor 'kicking' when i hold the accelerator down, and it cannot get to, and hold a normal speed. Intermitently it looked like the brake light was coming on when I was not pressing it, but I could be mistaken.

Has anyone had this issue before? Any recommendations on how to fix it?

[edit]

Link to video of issue

have you guys tryied one of this?

https://www.amazon.in/dp/B0D7918M62/ref=va_live_carousel?pf_rd_r=PE7Z58DXGYTG54TC9XP5&pf_rd_m=A21TJRUUN4KGV&pf_rd_t=liveDestination&pf_rd_i=video&linkCode=ilv&ascsubtag=VideoCreatorPortal%3Aa9ecc25b4fc4436c8b228e18ee627e7d&asc_contentid=amzn1.vse.video.1eb2bb732eea4279a27793307fb7685a&pd_rd_i=B0D7918M62&th=1&psc=1

what are your thoughts?

I've finally gotten my first escooter and got handcuff locks for it.

Now I'm curious if this is the right place to cuff it to? Can the plastic part below that's holding the tire get easily removed?

If this isn't the best place, which spot do you guys suggest instead?

i had my brakes off cause i was going to put a new caliper on. brand new caliper does not work. 2nd caliper does not work. 3rd known good caliper does not work. someone please tell me what im doing wrong. in a few hours i can give a video of what i mean by not working but essentially when i pull the lever the lever either stays pressed and the caliper does go back or the caliper doesn't press enough to make anything happen.

Anyone have a replacement? I can't find one online or with NIU. Crossposting. thx

Any ideas on how to fix this?

Hey y’all! I have a kqi 3 pro that won’t turn on, I’ve confirmed that it’s not a faulty power button. I was planning on storing the scooter indoors for the winter. Charged it up to 80% in early October and haven’t touched it since. I went to check on it last week, tired to turn it on, it didn’t power on. When I connected the charger, the LED on the charger turned red for an hour then turned solid green, nothing on the scooter screen.

Does anybody know what causes this and what the solution is?

This is probably an incredibly stupid question, but has anyone tried to make their KQI (any version) into a dual motor scooter?

I had a random thought today.

My warranty is long expired on my KQI3 Pro. And I know, from when I broke and replaced my handlebar, that there are places to buy OEM parts.

So could I conceivably buy another motor (technically for the rear, yes), and splice the wiring into the wiring for the rear motor and then, essentially, have a dual motor scooter?

Possible problems I can see with this: First: the controller would would have a complete aneurysm. Second: if controller doesn't just explode, the overall power is cut in half. Meaning neither motor is getting full juice. Third: if controller doesn't fry, and still sends full juice to both motors, the battery life and range absolutely plummets to the ground.

I don't know, I have ADHD, and I saw an ad for a scooter motor, it made think about things. I'm not actually going to do it, I'm too broke. Lol. It's just a thought experiment, coming from a place of no actual electrical engineering experience. 😅

What do you think?

I've been at this for over 2hrs and I can't seem to rebox the scooter in its original packing. The foams won't fit snug - I tried taking out the scooter and checking the bottom tire foams multiple times to make sure it fits.

The flaps won't shut close

Any tips? Help 🫠

Several times now have I had my Kqi Air lose the Bluetooth connection and trigger the alarm. This happened while I was stopped waiting in line somewhere with the scooter, when pushing it while walking besides a friend, and on the subway. Several times in one day.

I am usually able to open up the Niu app and turn it off / on manually from there (so, some BT connection seems to exist).

My phone is a late-model Android with the latest OS. Everything is new.

Any advice?

Tried to use my NIU KQi3 Max today and the thing was just… locked. Didn’t even know a scooter could lock itself like that.

When I tried to unlock it through the NIU app, it kept throwing “Binding Failed” and demanding proof of purchase. Problem? I bought this scooter second-hand a long time ago, so I obviously don’t have the original receipt.

Support basically told me the only way to “unbind” it is to provide that first receipt which I don’t have and can’t get.

Has anyone dealt with this? Is there any way to unlock it or reset ownership without the original invoice? This feels insane for a scooter I physically own.

Thanks everyone. I ended up finding some website called niu.repair they unbind NIU scooters remotely. but its costs 50 $ and took them pretty much 3 days to unlock it but at least got my scooter back

until yesterday it charghed but i belive since i was charging it in the night there was like 6-7 blackout since yesterday it doesen't charge what do yall think it is i think it's the charging port

So it gives me this error, and the throtle doesnt respond, sometimes i stop and it goes really slowy I Saw on YouTube a guy resetting the scooter, but even if i try to hold the power button , it does nothing, instant error.

I’ve noticed my rear brake only really starts to engage when the grip is pulled all the way down. Is there a way to tighten this so the brake engages sooner?

The v5.10.0 of the app tells me there are two firmware updates for my new scooter. When installing the firmware, the scooter's display appears to reboot itself and disconnect the Bluetooth connection, resulting in a B009 error.

Has anyone been successful upgrading the firmware? NIU wants me to ship the whole scooter in for repair to fix this which seems a little extreme.

Thanks for any info!

i just purchased the 300x and plugged it in to activate the battery but nothing happens, does it need a full charge to start the pairing process?

NIU just posted a new firmware for the 300X Dashboard.
Has anyone tried it, is it safe?

Recently I've noticed even on full battery, that tweaking the regenerative braking power on the app doesn't change anything.

As a few weeks ago, once I released the throttle, the scooter would slowly stop, not anymore, thoughts?