KevinMull
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Wisper 905 Torque, 6 years old and had a replacement battery last year. There's regular resistance when pedaling like it's losing power at any speed and on flat terrain. Seems to be getting more regular and it often feels like i'm pedaling in manual mode than with any assist. The controller LCD remains fully displayed throughout. The battery locking mechanism broke a while back so I have to keep the battery strapped in with a bungi strap but no problems with the LCD display. Any ideas on what could be causing it? Many thanks
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I returned the battery to Wisper who have managed to fix it and return it to it's near new capacity. Here is the email from Adrian..... "The problem was down to the BMS which due to its malfunction didn’t allow the battery to be fully charged. Each cell section has its own balancing cable which is connected to the positive terminal on the board. Every cable has its own little “controller” to make sure all the cells have the same voltage level. If one, or few them controllers fail the BMS still operates, but bypass the cells that have faulty controllers to prevent the cells from overcharging or discharging too much. That’s why after replacing BMS the battery has perfect results." Many thanks to all for your replies. Looking forward to get back in the saddle and do a 'full day's ride' in time for summer!
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Wisper have quoted £125 to repair and return (plus my delivery cost to them) or return FOC if no fault found. . Is this reasonable? I'm not confident in going under the hood myself to even test and not sure of any local e-bike battery repair services (Manchester)
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My LCD (XT-LCD W108) doesn't have buttons on it, they are separate and tethered to the LCD. I have tried hold all three together but nothing happens
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The charger reads 41.6v
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Yes, it turns green on a full charge and al LEDs are lit on the battery
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36v is the 'nomianl voltage' of the battery. It rides ok, just shows 2 bars on the controller and then goes down to none after around 20 miles
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I took a reading immediately after charging, it read 36v exactly, which is normal as it is a 36v battery (?)
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I've had my Wisper 905se about 5 years and only use it occasionally during spring/summer. This year the battery (Samsung 575) only charges to about 50%, according to the LCD controller anyway ( 2 bars) although all LEDs are lit on the battery itself. I get a reading of 36v on the battery with my multimeter. I have contacted Wisper who recommend that I send the battery to them for testing. Before I send it off does anyone have any advice on what the problem could be? Could it be the controller at fault showing an incorrect reading?
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I'm after a simple app that will allow me to... Create routes (on and off road) on a web version on my PC and upload to the app and then follow this route via GPS and also show elevation, speed, distance etc. I'm currently using Google Maps which is fine but doesn't seem to do elevation or stats. Google My Tracks was ideal but it's no longer available.
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Are e-bikers generally accepted by the Strava community? Considering the main focus is on logging times, hill climbs etc then I would have thought there would be a lot of negative comments(?)
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I was in Seville two years ago, lovely city and I saw a few elec bikes too. Same in Bern & Lucern in Switzerland last year.
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<rant> Of course 'assistance' from wearing high tech lycra clothing and riding lightweight carbon fiber bikes etc is not 'cheating' is it!? And what's 'cheating' about simply getting from A to B or doing it for leisure? Is every bike ride a race? a time trial? a work out? </rant>
