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To me, that says it all. You're measuring surface voltage which collapses as soon as you load the battery. The screen on it's own uses a paltry amount of energy - the motor needs a good chunk. You could rig up 3 x 12v light-bulbs in series and attach to the battery and see if they stay on for...

Okay, I'll humour you... From my perspective, I'd choose a BBS01. It's legal, reliable (although parts are plentiful), and powerful enough, and it's easily adjustable on-the-fly with a £20 programming cable and a free App. I have a Bafang M400, which is broadly similar except it uses torque...

What Chinese bike? There are thousands of different Chinese e-bikes! Many use generic displays/controllers, some OEM. Sometimes, it's simply a case of changing parameters on the display panel. State/show your specific bike and the display. If it's do-able, someone here will likely know.

I think you could try what @Sturmey suggests in post 3 - running a soldering iron over any joint that seems bad or dry. See if Halfords have any bad batteries for disposal - most fail through badly treated or knackered cells, not because of a faulty BMS. Universal BMS: I don't know what comes...

So you've proven your charger isn't at fault and its connecting lead is fine. Halfords confirmed that too by substituting a different charger. So it's definitely a battery fault, but not a common fault that the BMS would normally report through oddly lit LED's. Handshaking is simply a cynical...

Yes, adjust brakes as you say, but you need to repeat that from time to time as the right pad wears and the gap increases again. Don't squeeze the lever too hard though or the right pad will end up always rubbing against the rotor. It's a knack you soon get the hang of it. It's only very...

I've a Fiido D11 - different bike, but exactly the same Fiido brakes. My understanding is the pads are sintered/harder than usual resin - more prone to squeal than resin. Fiido's callipers only apply pressure from the left pad - the right pad distance from the rotor can be adjusted with a hex...

For a while, I used this type of fork-fixing block screwed into the floor (not this actual brand). It worked very well, but it became a pain due to the bike always being in a fixed position and having to remove and also store the front wheel separately. I reverted back to bungee cords which to...

Are you looking to employ a mechanic, or a shop who can do it for you? A friend told me about this shop in NW1 not far from where I used to work who specialise in selling electric cargo bikes, but take on all types of electric bikes for servicing/repair - even do a collection/repair/return...

The Eagle is one of those TranzX bikes that pre-dates CanBus diagnostics. My local Ebco dealer said/suggested there were ways of calibrating/setting those earlier bikes by combinations of key-presses. If you think it just needs resetting, I'd think your best bet would be to contact Ebco...

Are you sure? If your battery is the original, it's likely at least 8+ years old, more likely 10 (the bike dates from 2010). The battery only ever had a service life of 500 cycles when new. The 42v you measure may just be surface voltage, which collapses when you switch the bike on. If you can...

I'm struggling to understand your problem too. You say... Right, okay. That's expected. And... Well, it would do. The controller has (one or more) pretty beefy capacitors to store energy to smooth and account for surges. That's what capacitors do; they store energy. An LED uses a miniscule...

As with all bikes at the moment it's a question of what's available. Fiido are Chinese. They have a UK warehouse in Bath and a service centre in London. Delivery from stock is in a couple of days. There are better compact e-bikes available: Fiido concentrate on "value", the D4S being one of...

By time you take an ultra-light bike like that and make it electric, you end up with more weight and paying way more than one built for purpose... like a Fiido D4S, £540... as a typical, low-cost example. I don't see that converting a bike like that makes much sense IMHO. There are plenty of...

I'm intrigued. What advantage does using the open-source software offer over just using the standard KT LCD5/controller? Those I've seen that do use KT LCD/controllers in Fiido bikes (D2, D4, D11) seem very happy with the standard firmware.

My approach would be this: You need to open the charger and check continuity between each plug pin and the corresponding solder point in the charger. You need all wires connected (otherwise that's likely the issue), but note which wires are pins 1 and 2. Then, with the charger pugged into the...

Once the charger LED turns red (as the OP's does) it's done handshaking, and outputs the full voltage across pins 1 & 2 (well, it should do... mine do).

Phylion low-voltage cut-off is 28 volts. The charger will work from even below that level (23v). Phylion/Carrera batteries Halfords sold use a smart BMS: Apart from the quick press of the battery button to show the charge level (solidly lit LED's), it will show any main battery faults too if...

It'd be worth checking continuity of that ceramic fuse. How old is the bike/battery? Which battery version is it - Phylion (pre-2019) or STL (post-2019)? Both battery versions have some communication with the charger.

For 2021, both the Furo X and Gron come with racks and mudguards... although what practical protection either of those front mudguards offer is questionable. And the Furo rack is set so far back it puts all the weight in entirely the wrong place, the length making the folded bike far less...