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Helmets of the type they want folks to wear are next to useless bar from maybe protecting one at vert low speed from a tumble and possibly banging ones head. Get hit by another vehicle or some other propelled machine then a helmet has likely little or no use against injury. All that their use is...

Try long pressing the battery switch for approx. 10 -30 seconds to see if it wakes up. Also if the charger doesn't recognise the battery it is because the battery internal BMS won't allow it to charge because of cell voltage imbalance, this means one or more cells groups have discharged below...

Part charging is only worth while if you can monitor individual cell balance, how are you going to manage that ? If using a generic BMS the easiest option is to wire up a balance lead externally to the battery pack to use for monitoring, other wise one needs to use a BT BMS with adjustable settings.

Why break it up ? < £100 and one can fit any suitable fork.

Because we did and it was part of growing up when we had more freedom and less left wing nanny state guidance. Accidents are part of life and will occur.

Now tell that to the dad whose young daughter was strangled by her helmet a couple of years ago in an unfortunate accident, dad told her she was not to take it off.

Go to garage and ask if they will look at your rear drum brake, the fact the bike is electric is neither here or there. The places where you have been to they can't be bothered and are just using it as an excuse to tell you to bugger off.

e bike battery cells are rendered useless once they fall below 80% of the max charge rate, once this occurs the voltage just simply collapses. The indications of cell ageing are the loss of ability to hold a decent charge of 4.15 - 4.2v, the causes of cell ageing are over discharge or over...

It's simple maths, 36v has more voltage then 24v but the maths are exactly the same, one divides the voltage by the cell group numbers. 24v is 7 cell groups in series aka as 7s/24v, each cell group has max voltage of 4.2v. A max charge is 29.4v so a max charge of 27.2v divided by 7 = 3.88v =...

27.2v fully charged means the battery is knackered or has a very bad cell group, no wonder the bike doesn't work and the screen turns off. The voltage is sagging horribly or simply collapsing. 27.2v = 3.88v max per cell group, this equates to approx. 70% or a knackered battery.

The kalkhoff's can't be de restricted unless a dongle is used, like most mid motor oem bikes they are tamper proof electrically due to the nature of the system.

He (Grega) is commuting around town on flat terrain not trekking.

I have rear hubs and load some 20kg in the panniers, never yet had the front wheel lift off. A 250w - 500w motor won't cause it to do so even with 20a.

We haven't had any voltage readings yet !!!

It's a cheapo 24v folding bike, the battery will be a generic dumb two wire set up the two outer pins will be wired. Sometime they have =/-- marked, any speed control occurs between the display and the main controller box.

Clingfilm for the display.

Mid motors use a dongle to trick the bikes speed, the trip mileage would be out. Ebiketuning sell the items whether the agattu is covered I don't know, if you have the impulse drive then it may fail even quicker with a dongle.

An led 3 spd no back up battery there then, so looks likely the issue is with the main battery or if damp is affecting the led's pcb .

One will likely find that a generic rack battery one might doesn't exist.

Some displays if lcd and have clock have an internal watch battery, just worth a mention.