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£100 would be about right and enough for you to make a tidy profit. £185 is ridiculous when you can get a plug and play KT system that's better for only £70. http://www.topbikekit.com/t06s-24v36v250w-torque-simulation-sine-wave-with-julei-waterproof-connector-p-732.html Also, £85 for a £10...

Duplicate thread. Please post all replies in the other one. https://www.pedelecs.co.uk/forum/threads/charging-problem.40652/

If your battery reaches 41.85v, there is nothing wrong with the charger, nor the charging, and probably nothing wrong with the battery. Have you accidentally set the LCD to 48v? That matches all the symptoms you have, including the range! P03 =36...

You solve charging problems with a voltmeter. Measure the voltage on the connector on the charger, then measure it on the battery's charge socket. Those two results should tell you where the problem is and, by deduction, what it is.

Any of the middle-sized cassette motors would be fine for what you want. Many of us prefer the KT sinewave controller because of it's fast response and torque simulation (current control). 15 amps is about right if you like to pedal hard sometimes, or the 17A one gives 13% more power and torque...

Put a 4kg weight in a back-pack and see how far you can ride your bike before you want to give up. I have a rockhopper frame with a dolphin battery in it. Before that, it had a tubular one. I think it's a 17" frame, though might be the next size up.

It will work with your existing brakes, but you might have to do something with the connectors. When connectors don't match, I just cut them off and solder the wires, which is much quicker and cheaper than sorting out connectors. Some of those KT controllers have a separate connector for the...

Use a jiggler key to unlock it, then disassemble the lock and remove the tumblers so you can operate it with any key. https://www.ebay.co.uk/itm/10x-Stainless-Jiggler-Keys-Dual-Sided-Car-Unlocking-Lock-Opening-Repair-Ki-YMK/313430896956?hash=item48f9eff13c:g:gkUAAOSw0U9fcwuu

Show us some photos. I reckon you should be able to get spares direct from Keyde. I've never seen any at any of the normal stockists.

Everything is repairable if you know how and can get the bits required. That Trike has its own electrical system, so all our normal knowledge and sources of parts aren't going to help.

There are two good candidates. At around £40 Brainpower one with the S866 LCD, which will be the same as what you have, but you get the LCD and 5 levels of assist. You'll have to install a wheel magnet type speed sensor that you can nick from an old cycle computer or buy a proprietary one...

It's very common for a pedal to come loose when people get the bike delivered in a box and have to assemble the pedals themselves. If you don't nip them up tight, they come loose and damage the thread in the arm, so it has to be replaced. Also, the pedal and arm are very vulnerable in a crash. I...

The police are too busy investigating hurty words on social media and beating up lockdown protesters to worry about ebikes.

As I said earlier, you won't find a direct replacement, but just about any controller will work. Are you OK with soldering?

They're standard cheapo Chinese bikes. Have a look at www.E-bikesdirect.co.uk if you want to see some alternatives.

Remember, the guy from Mirider said that he had upgraded the standard electrical system to CANbus, which would prevent that. Some of what he said didn't ring true, and I think that it would be worth checking to see if that's the case. You'd have to pull out your motor controller and show us all...

A hub- motor should be fine for that. At 48v, you'll have plenty of power for hill-climbing. Hub-motors are generearlly more reliable and user-friendly. I can't recommend which one without knowing what speed you want and how heavy you are.

Can that battery supply 20A continuous? Cheapo Yose ones normally can't.

Bad luck!