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Others may know better, but I'm not aware of any BMS that will balance a battery with wide voltage variables. If you have damaged sells that are self discharging they will also sag badly with use, so the pack will be impossible to keep balanced. Make sure any cells you buy are the same capacity...

A true smart BMS with would allow you to set the balance voltage to around 3.8-3.9v, which is good for long term storage, but this will only help if your cells are all good. If the bike was cheap, then there's a fair chance the cells in the battery are likely to be cheap also, so even less...

In theory any BMS can rebalance a battery, but in practice this could take weeks or months depending on the voltage difference of the groups. Obviously leaving the pack on charge for this long is not recommended. It sounds like some of the cells in your pack are self-discharging, so I don't...

Look for M5 x 12mm if you need to buy one.

Do you have a soldering iron? Staggered solder connections with adhesive filled heat shrink is prob. the best solution.

I think I'll try the "gas blow it up" trick next time. what could poss. go wrong?:)

I suspect that due to the desperate need for this equipment that checks that would be done under normal conditions have been ignored. It would seem our government and others will be held to account at some point in the future, but incorrect decisions are made in times of crisis which can have...

As PC2017 has said, you could mount a small bottle battery in the frame triangle using the bottle mounts, it's a cheaper option. You will prob. have to extend the wires a little. Something like this should fit, measure your frame to make sure...

Blimey, that sounds alot to spend on new parts, what was wrong/broken?

Sounds like the Spanish health minister is going to have a few tricky questions to answer, like who's your unidentified intermediary. Makes the people selling over priced hand sanitizer appear quite honest.

Contact David at Wisper, I believe this is a fault they are aware of going by this old thread. https://www.pedelecs.co.uk/forum/threads/wisper-905-torque-fault-codes.31480/

I don't think this is an issue as the bike is working fine on flat road. You will struggle to find many 24v batteries as most bikes now are 36v. You also have the problem that the controller on your bike is housed in the battery mount, so this will need to be placed elsewhere if you fit a...

Then they are wrong, by doing so, they are forcing some to break the distancing rule in order to exercise.

But it could be argued that travel is essential in order to exercise to comply with the 2 meter rule for peolpe in high population areas, could it not?

By removing the internals of your hub, the spocket is no longer connected to the wheel. With the wheel off the ground, it is turning only by friction, there is no mechanical drive.

Westhill use a slimline version of the popular silverfish battery case which I don't think is available anywhere else, so, as Jonah says, re-cell is prob. the way to go. There maybe a fixable fault with your battery, which Jimmy can fix.

I think your bike has a 24v battery, so fully charged should be 29.4v. Unfortunately, As Nealh has said, voltage is not always an indication that the battery is capable of suppling the ness. current under load, ie; up hill. The only way to tell is to measure the voltage with a load on the...

Motor looks fine, have you measured the voltage of your batteries when fully charged? I think they are the most likely cause of your problem.

:eek: