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Keys are usually tied with a cord/tie to the handlebars or some obvious part of the bike frame. If you can't find your keys, you'd best call the shop and let them know.

Meaning what? If the LED doesn't light, it could be plug fuse, or one on the internal board. Either can be fixed for 30p. If it does light but isn't charging the battery, it could be an output cable/plug or battery/BMS fault. The first cheaply fixed, the latter more difficult, but isn't the...

That looks a lot like the Fiido M1 Pro - 48v, 500w motor - but without that price tag. Fiido also do a UK street legal 36v 250w motor version - £720+VAT. Both only white or black, and neither have the full-colour screen. But the rest appears near identical. It's a lot cheaper option, and...

This is all very cryptic. If the OP would say what is wrong with his charger it may help? Are you looking to buy one, or is the one you have broken and needs fixing, or is it just not working the way you expect?

Those lithium jump starter packs (eg Noco Boost range) are designed to produce really high current but only in short bursts. They can't sustain a constant 12v output for very long. Their batteries are in reality titchy - sometimes only 24W of energy. The OP needs 374W. There are lithium power...

The battery is removable for replacement, but it's not designed for quickly changing to a second battery. But you can buy the "special parts" you'd need direct from Fiido (spare battery, discharge plate and charging lead - see their website). It's not that quick to change though. Is there not a...

It looks like Fiido's UK stock has arrived at last. You can order direct from Fiido's own site. The D4S is £504.99, but they're adding 20% VAT on at the checkout, which makes it 604.80. But that's still a LOT cheaper than the inflated price Markshop were showing.

As anticipated, it looks like Fiido's UK stock has landed at last. You can now order direct from Fiido's own website. The D4S is £504.99, but they're adding 20% VAT on at the checkout, which makes it 604.80. But that's still a LOT cheaper than the inflated price Markshop were showing.

Chargers work CC/CV - that is Constant Current, then Constant Voltage. A 2-amp charger will charge at 2 amps until maximum voltage is reached. The charger then holds that voltage steady and reduces current progressively until the battery is full. When the battery is at peak voltage and the...

That's because you're theorising. I have a VW Transporter Touring van, with a 52" flat-TV-sized 100 watt solar panel, and two inverters for charging my 3 e-bike batteries. I'm also a qualified electrician. How I hate wasting mobile power through conversion losses. The Solar is useless in...

You're proposing a 300Wh 36 volt Brompton battery that needs to charge to 42 volts, but being charged from a 20 volt charger at 100 watts through a USB-C cable whose accepted universal standard voltage is 5 volts? Even using a buck converter, I'll be dead by time that gets done! I'll be dead...

Yes, earlier e-bikes were 24v, but by todays standard of 36v, trending towards 48v/52v, a 24v e-bike wouldn't pull the skin off a custard. That is what I said - USB-C is max 5A. But that seems to me to be the problem with the theory - you can't get away from W = V x A. With "normal" e-bike...

That's a shame. The older batteries would work with or without UART; they could still be put to sleep or woken up and provide power even if the comms weren't being used.

I can't see that working at all. A 42v e-bike charger at 2A is drawing 84 watts (ignoring conversion losses). 84 watts from a 5v USB supply would need a massive 16.8A current... but the limit over USB-C is 5A maximum. You could use a lithium battery as a buffer, but it'd need to be at least as...

On the older battery, the outer two of the 6 pins are +v and -v. The inner 4 - if you can see contacts and they are actually connected - were UART comms. Likely the same on the newer STL. If you check your battery is fully charged first (41v-ish), then post clear pics of your controller with...

That sounds like the 2020 version with STL battery. If it is, it's where the controller is. To 2019 models with Joycube 06 battery had the controller potted in the battery dock.

There are a couple of members here who know your e-bike quite well (I don't), but from what I've read, troubleshooting guides and wiring diagrams you won't find. It depends which model you have as Halfords changed the Vengeance quite a lot after 2019. The Suntour HESC system is a bit of a dark...

Some batteries go to sleep when not used in a while. See what your manual says. My own battery shuts down after maybe an hour of not being used. A quick press of the battery power button shows charge level, but it's still asleep. You need to hold the power button down for 10 seconds to wake it...

I think your e-bike looks pretty slick and good value given the kit on offer. It's nice to see any sub-£2000+ e-bike with 10-speed Shimano Deore gearing rather than the (I think) less-precise Altus/Acera. Tektro hydraulic brakes too. I guess the compromise at the price point has to be the use of...

Like I said @sjpt, that e-bike page is not linked from the main site, shows nothing, and goes nowhere: It's just a dead header page held in the background. Where are the Planet X e-bikes? The OP's e-bike looks interesting... it'd be nice to some specs/prices.