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The display takes a feed directly from where the battery wires go into the controller, so the controller has no effect on them. Normally, your controller could be completely smoked, but the LCD would still work. Charge up the battery and measure its voltage hot off the charger.

They're not even reliable enough when you use them as normal pedal assist. They're not robust enough to use full power all the time - as you already found out. It's not just the motor. The gears and chain won't last long either.

Don't replace anything until you test where the faults are. The tests are very easy to do and will identify which bits are faulty. You didn't answer whether you have a meter.

You can put a 20 cell battery in one of those tool bags that go under the saddle if you want stealth or get a bottle battery. There are a few nice bottle batteries on Aliexpress.

You can probably use your original PAS, but check that the wires in the connector are in the right sequence to match the controller. Yes, you can wire in your horn and light. It's best to splice in two wires to feed them into your battery wires. You cut off both the 4-pin and 3-pin connectors...

They were red folders too! https://www.pedelecs.co.uk/forum/threads/alert-wisper-bikes-break-in.35256/

If the LCD went off when the cut-out occurred, the battery supply to it has been interrupted. If you have to operate the battery switch to get it back on, then the BMS switched off the power because it detected a fault.

https://www.ebay.co.uk/itm/USB-48V11-6AH-E-bike-Lithium-Battery-Downtube-SAMSUNG-Battery-for-1000W-Motor/223283600797?hash=item33fcbd5d9d:g:YaoAAOSw6EpcLBnV This type is easier to install because the fixing holes normally line up with your bottle fixings. The other type has the fixing holes...

For what you do, it has to be a direct drive motor or maybe a MAC.

Clickbait!

I spent some time talking with the NCM guys at the Cycle Show. One told me that the speed limit is fixed in the software in the LCD and the only way to release it is to buy the more expensive unrestricted LCD, though I suspect, but can't confirm, that you could buy an unrestricted LCD from...

The speed sensor is a device that clips onto the chainstay and a magnet is attached to a spoke, so that the sensor gives one pulse each time the magnet goes past. Most controllers can get a speed signal from the motor hall sensors if you don't have a separate speed sensor. You do that by...

I think you need to reflect on some of these comments made. There are at least 4 established members, who have been working with ebikes for many years, including myself, basically saying the same thing about your posts. I don't know about the others, but I'd be happy to say it to your face if it...

Rather than jump in and try to solve every possibility at once or confuse the guy with complicated theory, it's much better to take things one step at a time. Shorted phase wires is by far the most common reason that DD motors lock, and it's very easy to confirm or eliminate by simple quick...

After it hit top speed, the speedometer was working like a battery gauge. As the voltage was going down, so was the power and hence the speed. That's a good demo of what happens on our electric bicycles. Unrestricted, the top speed when the battery is run down will be 75% of what it is when...

OK, I misunderstood what you were saying. Let's be sure. Disconnect the motor completely and make sure that the three phase wires can't touch each other. If you still can't turn the motor, there's a short circuit between two of the phases. The place to look is where the cable comes out of the...

But not a bicycle in the normal sense.

You didn't say which motor you have, nor what type of speed sensor.

Have you done all the settings yet? You have to tell the LCD what to use as a speed signal, which is a combination of P1 and P2. Their values depend on which motor you have and whether you fitted a speed sensor. P5 might affect the battery display if it's wildly out. What's yours set to?

A number-plate, a licence, road tax and insurance, and a helmet when you ride it.