Woosh CD Sport electric problem

trex

Esteemed Pedelecer
May 15, 2011
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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.
 

denwyn

Esteemed Pedelecer
Aug 17, 2013
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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.
 

trex

Esteemed Pedelecer
May 15, 2011
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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.
 

denwyn

Esteemed Pedelecer
Aug 17, 2013
414
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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.
 

Kudoscycles

Official Trade Member
Apr 15, 2011
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www.kudoscycles.com
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
 
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trex

Esteemed Pedelecer
May 15, 2011
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his battery is not completely dead, he can ride about 6 miles on it before it drops - then he can sort of limps home. A battery without sleep function continues to discharge slowly, causing dendrites to form. Then when the battery is chraged to full next time, the cells with dendrites are a bit more difficult to charge, causing the battery to get out of balance. If you leave the charger on, the cell with dendrites will produce gas, leading to failure. When you ride the bike for 3-4 miles, that's roughly enough to keep the cells dendrite free.
The way to solve this problem is to have sleep function where the BMS disconnects all the cells and shuts down the CPU, stopping formation of dendrites. You can then leave the battery for 6-8 months without problems.
 
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D

Deleted member 4366

Guest
I don't kmow what sort of batteties you have, but I must have at least 20 batteries at any time. Most of them don't get touched for months. I've never had a faulty one yet apart from one Ping LiFePO4 one which lost one out of 48 cells (swollen). I can't sat that was from lack of use though. It could have been like it from new. I only discovered it the first time I measured the capacity.

Denwyn said that the lights on the battery indicator drop down, which is consistent with a very high current being drawn. If it were faulty cells, it wouldn't work again afterwards.

Reasons for high current I can think of:

Faulty phase wire connection
Stalled motor
Short circuit
 

trex

Esteemed Pedelecer
May 15, 2011
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his CD motor has waterproof style 3-pin motor cable, he can't have a faulty connection. He did not report stalling. I concluded that he may have a reduced capacity cell.
 

denwyn

Esteemed Pedelecer
Aug 17, 2013
414
41
his CD motor has waterproof style 3-pin motor cable, he can't have a faulty connection. He did not report stalling. I concluded that he may have a reduced capacity cell.
Not sure what you mean by stalling, the battery indicated lights on the LCD panel usually drops to 1 or 2 bars, speed also drops, then total shutdown, normally takes several attempts to power up again and bike behaves normally for maybe another couple of miles. Intend to risk using bike for work next week, hoping getting the battery level downdowna bit may help sort battery out.
 

trex

Esteemed Pedelecer
May 15, 2011
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you may need to bring your charger and charge it up at work, just to make sure you have enough juice to get home on assist.
 

denwyn

Esteemed Pedelecer
Aug 17, 2013
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Battery charger already in rucksack, going to work is the worst with a few steep climbs, ride home is no problem. See how things are by Wednesday. Hope it sorts itself out. If I have to return bike or battery to Woosh I'll have to grit my teeth and just do it. On reflecting I should have bought from local shop, I really like the bike though, but not being able to get electrical problems sorted easy is so frustrating.
 

trex

Esteemed Pedelecer
May 15, 2011
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look on the bright side, you know where the problem and solution, just need to confirm which you will know in a few days.
 

denwyn

Esteemed Pedelecer
Aug 17, 2013
414
41
Bike still faulty, as soon as I get a box from local bike shop I'm sending it back to Woosh to sort it out. Thanks for all the help, sorry but I haven't got the time or patience to keep messing about with it. Hoping its not going to need new battery or expensive repairs as I think its out of warrenty now. Lots of earache from other half now who wanted me to buy local, in a way this sort of proves her right, which is even more annoying.
 

trex

Esteemed Pedelecer
May 15, 2011
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just a suggestion, ring support ask if you could 'borrow' a battery to see if the problem is sorted, you can always give your credit card number as guarantee.
If it's sorted, then send in your old battery for repair. That way, you are not without a bike.
 

denwyn

Esteemed Pedelecer
Aug 17, 2013
414
41
Grrrrrr....Last night .arranged and paid up for Paisley Freight you collect and deliver complete bike to Woosh, for £27.50. went down into garage and removed front wheel , handle bars etc and packed up bike for collection today, on checking for Woosh delivery address on line, i noticed two emails from Paisley Freight one confirming my order the other saying my order has been cancelled and money refunded as they dont collect in my area, f?~#iN* hell what is the matter with businesses in this country, anyone would think we lived in the back of beyond, not right next to the M5. tried several other couriers who were far to expensive, in the end the battery has gone off this morning with My Hermes, never had a problem with them, just a pity they couldn't do the bike. Hoping it is a battery problem and easy to sort.
 

trex

Esteemed Pedelecer
May 15, 2011
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why do you want to send the whole bike back? they don't need your bike,

Plus, because the bike is out of warranty, they'll charge you to send it back!

just ask them to borrow a battery or send your battery in.
 
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denwyn

Esteemed Pedelecer
Aug 17, 2013
414
41
why do you want to send the whole bike back? they don't need your bike,

Plus, because the bike is out of warranty, they'll charge you to send it back!

just ask them to borrow a battery or send your battery in.
Because they asked for the bike back, Battery is on its way back to them now, I'm sure they had there reasons for wanting the bike back, they have said if its not the battery i would have to send the bike back anyway. looking into the future with this bike i am not so sure, while i like the bike, if i have to go through all this performance every time i have a problem its just not worth it, bike has been fine til this except for the motor working lose, and i had to borrow a special tool from Woosh.
 

trex

Esteemed Pedelecer
May 15, 2011
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I'd suggest you ask them to fix the bike, don't send it back but sell it second hand and send you the difference. Buy locally next time.
 

denwyn

Esteemed Pedelecer
Aug 17, 2013
414
41
Won't be a next time, I like the bike,don't want to sell it, just a bit of a pain with repairs on the electrical side of things when you don't know anything. I'm confident with all the mechanical side, brakes, gears etc. If it ever got to the point the electrics were giving lots of problems then yes I would get shut of it mainly because of hassle in repairs. Buying from local dealers has some benefits, even if bikes are expensive. The help on this forum is very valuable though.​
 

denwyn

Esteemed Pedelecer
Aug 17, 2013
414
41
Bike Update...Woosh have had the battery a week now, email from them today saying the battery is ok, been on test and it discharges and recharges fine, there going g to try it out on another bike and get back to me. A bit worrying, bit annoyed I never sent the whole bike now. Hoping it can be sorted fairly soon, but at what cost I dread to think.
 

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