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Hi. I wired and mounted a dual 40 amp (20 + 20) Schottky Diode on a square piece of aluminium and stuck it in a tic tac box, as my bike battery is still under guarantee and has a smart BMS, and there is an instruction not to ever send reverse current into discharge port which can happen due to...

I fitted the throttle on the left with the cable facing inwards and under the brake lever and the throttle lever facing upwards( push forward with thumb over handlebars to operate throttle). Its not always the most comfortable if used for a long time but ok for intermittent use with PAS.

Would this battery from elife fit? (SF03) https://www.ebay.ie/itm/Rear-Battery-36V11Ah-407Wh-Electric-Bicycle-Li-ion-Battery-for-Phylion-SF-03/303008070351?hash=item468cb03acf:g:t70AAOSwD1pcIeac:rk:2:pf:0 Pay particular attention to shape. The battery described below is slightly different but...

Hi. I am taking a close look at your bike photo. I have two bikes of similar vintage (Claud butler & falcon with cantilever brakes). As regards fitting a front bub, there will be difficulties with fork clearence, (although I did fit a mxus xf07 to the claud butler by redishing the wheel, and...

Beware of the 'rubber band effect', i.e the 'state of charge' often lags behind the voltage. There is a full discussion on this in the link below. The battery needs to be allowed to rest for a few hours before the voltage gives an accurate indication of the state of charge. I have observed this...

I have never bothered turning off the battery, I just turn off bike at 790 display and remove battery when I had to. PS The pdf below refers to the slightly larger 11ah version but I think the 8.8 is similar.

I bought a spare battery and charger of this guy before for a ( Halfords) Pendleton. The original 5 pin charger was joycube sslc084v42xh model but replacement was almost identical and worked fine...

Thanks for your replies. The BMS also acts like a solid state relay in that it has an additional 2 thin white wires that go to a switch on the battery that turn on and off the power. (There is no handlebar display unit) The cells are also unbranded so I think I leave it sitting for a while and...

Its nearly a year old. We are slightly hesitant about opening the battery as I think there is a years guarantee. I did caution that once we opened the battery, we may not be able to return. However, the battery is still usable and better than 60% even with the unbalance. I'm draining some of the...

Hi. A family member has 7ah cyclotricity battery which is starting to perform poorly lately. It range has decreased and whereas before, it use to take about 3 hours to charge, now it charges in a little over 2 hours. He tried to balance battery by leaving charger on overnight but did not improve...

One thing to bear in mind is the accuracy of an ordinary (cheap) multimeter, which is typically (e.g. Roslon) quoted as (+/- 0.5% ) + (+/- 2 digits). This could amount to an inaccuracy of 0.4 volt when reading 42 volts with the 200v scale. To put this another way, a charger reading an output...

Hi. I bought the grey Joycube 11ah battery and charger from the supplier above last June. The battery arrived about a week later and fitted ok on the Pendleton and worked fine and did give about 25% extra range as expected. I have gone on long rides with the two batteries (changing the battery...

There is also a suggestion that a bike be not used immediately after charging.e.g. https://www.energuide.be/en/questions-answers/how-long-does-the-battery-of-my-electric-bike-last/1782/ There is (imo) some additional merits to this. If you look at the specs of many BMS', you will see that the...

Hi. Just to add my piece. There seems to be some disagreement over what happens when the battery becomes charged and the light turns from red to green. Well, from my knowledge and observation (and taking into account differences between models etc.), I would say it also depends on whether the...

Hi all. I broke a spoke today on a relatively new hub (950 km). I went looking through my box of bike spares and had much longer 13g spokes, so decided to try a traditional z bend repair that seems to work and is strong and only took a few minutes. Anyhow, time will tell!

Hi. 44.4v (or sometimes called 44v) I presume refers to the 12s battery (12 groups of 3.6 volts in series) and is a standard, and chargers are readily available for same e.g. https://www.amazon.com/50-4V-Charger-Li-ion-Battery-Auto-Stop/dp/B07BFPYYSM

Hi. I fitted a 700c yose rear wheel with freewheel and it looks to have a very strong axle. The axle is over 14mm thick and this thick bit extends right out almost as far as the dropouts, with only a small width spacer used if necessary. Only a short length is reduced to 12mm and threaded. This...

Motors are not simple passive components like resistors but rather more dynamic and how they respond depends on their speed, loads etc. You can, for example, have a situation, where a reduction of voltage causes a motor to stall and then to burn out. (e.g fridge compressors during brown out)...

Power is a product of both speed (RPM ) and Torque. You can increase the power of the motor by either increasing the torque (e.g. by increasing the current) or by increasing the speed or RPM (by increasing the voltage.) Now in many cases, the two enemies of the electric motor is excessive...

Hi Andy. I think the one important thing thats missing in your explanation is the effect of the 'back EMF' on the controller output. When the motor spins up, it generates a voltage that opposes the voltage from the controller. This limits the RPM to a certain value, depending on the output...