Woosh CD Sport electric problem

Purchased a almost new CD Sport last year, its been faultless until this week. Battery is fully charged, and as far as I know OK. Problem is its the bike just seems to die at random, first you know about it is when i t suddenly gets much harder to peddle, the battery level indicator on the I do panel drops right down then the power switches off completely. Switching it back on can take several attempts to get it working again, its OK again, plenty of assist in all speeds, but same fault developed again later on. Local electric l bike shop won't touch anything not bought from them. Any idea what this problem could be, bike is looked after, not abused, no alterations made except for improving brakes last year. Afraid my knowlage on electrics on bikes is absolutely nil. Any help appreciated.

Are you sure that it's not a problem with your brakes?

it could be the battery. I'd call woosh support.

Are you sure that it's not a problem with your brakes?

 

it could be the battery. I'd call woosh support.

I hope its not the battery, will be well miffed if I have to buy another, , in what way would it be the brakes, fault does not happen when I use brakes. Will disconnect electric switch on brakes and see if it happens then.

I mean the brakes binding to make it hard to pedal. A bad battery won't make it hard to pedal.

Defiantly not the brakes, when the fault occurs the battery level indicator on the LCD panel drops down followed by complete shutdown as if you have switched it off. When it does start working again its as if nothing has happened, full battery indicator showing and bike works as normal, in a short 8 mile round trip to work yesterday it happened 3 times, battery was fully charged night before, and still shows full charge. Bike has done about 380 miles in total.

you did not do many miles in a year - that may be the problem.

Batteries need to be used, not just charged up to full. A totally full battery runs as much risk of swelling as a totally flat battery.

You can try to discharge the battery - like riding a lot on flat roads, then when you charge it up again, it will get stronger. Do that again, the battery will re-balance and repair itself. The first time, you may get 5 miles, then 10 miles and so on.

Next time it does it, spin each wheel to check that they're free, then rotate the crank with the wheel off the ground. That will tell you what'-s making it hard to pedal.

you did not do many miles in a year - that may be the problem.

Batteries need to be used, not just charged up to full. A totally full battery runs as much risk of swelling as a totally flat battery.

You can try to discharge the battery - like riding a lot on flat roads, then when you charge it up again, it will get stronger. Do that again, the battery will re-balance and repair itself. The first time, you may get 5 miles, then 10 miles and so on.

 

Not many miles i know, wasn't' very keen on starting out at 6.30 am in the winter months for work, so bike rarely used, battery removed and kept in house. I have been using bike daily for work over the last few weeks, but not so often this week with this problem. I retire in three weeks and hope to use the bike a bit more, subject to this problem being sorted. does make me think though if i don't use the bike on a regular basis, i will always have this trouble, is this the same for all e bikes, no matter what the price. Is there an easy way to discharge the battery without riding the bike till its flat.

...

Is there an easy way to discharge the battery without riding the bike till its flat.

 

if you can remove the battery and somehow connect the two silver terminals directly to a halogen light or a fan heater or a toaster. Leave it for a few hours.

You can check with the battery meter that it has only one green light out of 4 left.

Edited June 5, 201510 yr by trex

if you can remove the battery and somehow connect the two silver terminals directly to a fan heater or a toaster. Leave it for a few hours.

You can check with the battery meter that it has only one green light out of 4 left.

 

 

Thanks i will try that, and then recharge the battery to see how it goes. Woosh seem to recommend recharging it every night for a few days to bring it back. Hope this works, not over keen on spending out hundreds on new battery

you can always send your battery to woosh to get it fixed.

if you can remove the battery and somehow connect the two silver terminals directly to a halogen light or a fan heater or a toaster. Leave it for a few hours.

You can check with the battery meter that it has only one green light out of 4 left.

Come on Trex! The guy doesn't have a clue. I can't think of a faster way to toast your battery than to wire it to a toaster.

 

Apart from that, he hasn't told us anything that indicates a problem with his battery. How does a battery make it hard to pedal?

Tried the connecting to a fan to discharge it, but not easy. Have been out on it for a 6 mile trip into town, the hard to pedal is probably me being lazy and unfit ; ) and not a bike problemas bike is quite heavy and not easy to pedal without motor. I,m sure its an electrical problem, It cut out quite a bit while out, also noticed at times when it was working it seems to switch between the electrical speeds on its own, using throttle or not. I will take it out a few times to discharge the battery and try recharging it after use for a few days as stated on Woosh site. Did try and phone Woosh, but no answer from tech help, so have emailed them

Andy does not work weekends, so you may have to wait until Monday for him to get back to you. In the meantime, resist the urge of recharging your battery. Let the battery rest overnight then take the bike out again. You know you are winning when you press the battery test button and one green light has gone off and you can still ride. Keep going until you get the second green light gone, then your battery has repaired itself, put it back on charge, you should be OK after that.

Andy does not work weekends, so you may have to wait until Monday for him to get back to you. In the meantime, resist the urge of recharging your battery. Let the battery rest overnight then take the bike out again. You know you are winning when you press the battery test button and one green light has gone off and you can still ride. Keep going until you get the second green light gone, then your battery has repaired itself, put it back on charge, you should be OK after that.

 

That's a bit more reassuring, its got one test light out and while the problem persists its still possible to ride, I'll leave it till tomorrow before I use it again and hopefully it may sort it self out eventually. Is this a problem you would get with any e bike no matter how much they cost..

mick2444 reported a similar case on another thread with his £800 Kalkhoff battery, 384 miles in and the battery starts cutting out.

There is a little randomness when you don't ride every day.

mick2444 reported a similar case on another thread with his £800 Kalkhoff battery, 384 miles in and the battery starts cutting out.

There is a little randomness when you don't ride every day.

 

Had a reply from Andrew Hall at Woosh Tech help. He seems to think it may be a battery issue, asked me to check terminals on base the battery sits in are ok and sprung. Positive is ok and sprung loaded, Negative does not appear to be sprung, not not sure if it should be. Recommends getting bike back to him if possible, that's not an easy option from Taunton, failing that send the battery. Not sure what I will do yet, looking at options.

Did try bike running with wheel raised off floor for a good 10 mins tonight and it ran fine, but taking it out on fairly flat roads with a few gentle inclines for about a 3 mile ride was no good with power shutting off completely twice and running slow. Really like the bike, bit of a pain local bike shops won't help, will have to sort out best option to get it fixed.

Tried the connecting to a fan to discharge it, but not easy. Have been out on it for a 6 mile trip into town, the hard to pedal is probably me being lazy and unfit ; ) and not a bike problemas bike is quite heavy and not easy to pedal without motor. I,m sure its an electrical problem, It cut out quite a bit while out, also noticed at times when it was working it seems to switch between the electrical speeds on its own, using throttle or not. I will take it out a few times to discharge the battery and try recharging it after use for a few days as stated on Woosh site. Did try and phone Woosh, but no answer from tech help, so have emailed them

Don't do anything to the battery until you've given Woosh a chance to help, and exhausted that help!

Don't do anything to the battery until you've given Woosh a chance to help, and exhausted that help!

 

I'm not going to do anymore with it, definatley won't be touching the battery at all. Will have a think about the pros, cons and costs of returning whole bike against just the battery. Bit sorry now I didn't buy local, although I do like the Woosh, just a pity local ebike shop only repair there own bikes, and other cycle shops don't sell e bikes.

there is no need to send the whole bike. By the way, local bike shops can't repair e-bike batteries, they will simply send your battery back to the manufacturer, if anything, that will just add delay.

Going to look for courier to send battery back, after Woosh confirm how to go about returning it. Thanks for help and advice. Bit concerned this could happen again as I really don't use bike much in winter at all, will have to try and ride if though.

you don't need to ride much in the winter to keep the battery healthy, I reckon 4-5 miles a week would do. As you already managed to get one light off on the battery tester, it's still useable for short trips after recharge. You don't have to rush it back to woosh right away, use the bike for short rides for the next few days to give the battery a chance to heal itself, it may recover enough capacity to be useable for a while. Battery technology improves all the time, it may be worth hanging on to the old battery until woosh can get you a better battery with sleep function. The new technology has Bluetooth interface that will tell you the state of its cells.

I intend to ride it for the next 3 or 4 days, then see how it is, waiting for a reply from Woosh re there questions. Do they do this battery you mention at Woosh, i see a more square bottle type on there battery lists now, would only really be interested in swapping battery if it doesn't involve messing with wiring on bike much. Lets hope they can sort this one out first, or fingers crossed it sorts itself out.

Denwyn....you seem to connect the fault with the bike suddenly becoming hard to pedal. That could be just loss of power or brakes binding or they could be connected. One of the most common faults is the power cutout sensor on the brake pedal,or sometimes located in the rear brake line.

If this sensor locks on the electrics think you are operating the brake and cuts the motor power even if you are not operating the brake lever.

Why this would delete all power on the PAS I cannot say,I don't know your bike that well.

With regard to using your bike every week to maintain the battery,that is complete rubbish. If that was the case I would need an army of test riders to keep all my stock bikes topped up,obviously impossible.

We have a system of storing the batteries remote from the bike,it's someone's job to check the batteries on a rota basis,any that falls below 40 per cent is charged and stored separately,if that battery keeps losing its charge it is rejected,maybe 1 in 50,most batteries keep their charge for 6 months with minimal loss per month.

The golden rule is 80-20,you should leave your battery in a state of 80-20 per cent of maximum. Our advice to our customers is,if you are going to store the bike away for the winter,charge it to maximum,go for a 20 minute ride to take the top off the charge,then leave it,ie about 80 per cent. Do a battery check a couple of times over the winter,never let it fall below 20 per cent,that is too close to flat and a risk of damage.

I have thousands of Kudos batteries out with my customers,they all should abide by the 80-20 rule and we have minimal battery problems.

I am about to go out to my boat,left over the winter,neither of my Kudos Secret bikes will have been ridden over the winter,I have the maintenance guy check the batteries a couple of times over the winter and a local bike shop give the bike a service before I use it,all sensible stuff.

The batteries do lose a bit of range over the years but a sudden loss of power is due to a faulty battery,normally a rogue cell,not about usage,unless you have let the battery go completely flat....D8veh is the expert of these things,he is good about 'waking up' batteries.

KudosDave

Edited June 6, 201510 yr by Kudoscycles