alanterrill

Thanks -I'll chase the dealer again tomorrow. I left all the details with them over a week ago and they've not come back to me.

There's no rubber bung on the display, and I can't get the battery open -I had it re-celled a year ago o and they've had to glue the casing back together as there don't seem to be any screws that hold it shut. Its a rack mounted BL03 if that helps. There is a socket under a rubber flap, but not a USB type.

I've just taken the display apart and there's no usb socket, just three mini connectors, one of which is unused.

Thanks for that info. There's no visible socket on the display but there are three screws holding a cover at the back. I'll take it apart tomorrow and report back.

Its my Raleigh Forge which has the Tranzx system. Its the display that's playing up (PST DP08 - only two of the buttons now work and then I have to hold them down for several seconds before they respond. I can't change speeds while riding so the bike is stuck in the top range all the time. I have found I can get a new display from the Holland bike shop but it's going to cost over £100 and I'm not sure if it will then need recalibrating with a jig I don't have. I'd rather replace it with a better control unit which has moveable buttons but I can't get any advice from Tranzx or my local Rayleigh dealer as to whether that is possible.

My wife and I have had an electric bike each for around 20 years now and have had three bikes each in that timespan. I'm increasing worried about the short life of electric bikes and what to do with then once they malfunction. We've had two Giants each, plus one Raleigh and now one Gazelle. Parts for the Giants weren't available as soon as the warranties ran out; I'm currently trying to fix the electrics on the Rayleigh -it was new in 2015 but neither Rayleigh nor Tranzx will respond to my emails. Indeed Rayleigh say on their page "It's highly unlikely you'll ever need to replace your electric bike battery due to their durability. When your ebike battery begins to cause you trouble, it's likely going to be time for an upgrade! Batteries are expensive on their own and you're best to buy yourself a new bike". In my experience, a battery pack lasts about six years (and I'm a casual user, it may be a lot less if you use them every day), so they're implying you should throw the whole bike away every six years. Unlike non-electric bikes, there isn't a network of people willing to do them up and sell them on or give them to a charity. Even my new Gazelle only has a two years warranty on the electric and battery, and I can find nothing on their website about future availabilty of parts. For an 'eco' means of transport we seem to be contributing to an awful waste of materials by throwing away otherwise good bikes just becasue their electrical system has failed. (of course, I'm well aware the batteries can be recelled, even if the manufacturues don't tell you this). Any solutions to this?

And that one is out of stock of course, but thanks for the link.

Thanks -I've just sealed the original back up as I'm going on holiday next week and need the bike, so I was hoping to fit new cells before I went! However, I'll take it apart and photograph it when I get back. I certainly like to do things myself and have a soldering iron, multimeter etc, but I'm not willing to take the risk that I'll ruin the only battery I have for my wife's bike or I'll be in big trouble. I did look at buying a complete new battery before I sent off for the cell pack but couldn't find anyone selling one -one is listed on Amazon with 'currently unavailable' against it. I just looked on ebay.de and found a new there for 749 euros which is more than half the cost of the bike (£1250 five years ago).

Sorry - only found the separate batteries forum after I'd posted but then I couldn't find a 'delete' button to get rid of the original. Feel free to delete this post.

Thanks for all the help - I've obviously bitten off more than I can chew -I have replaced batteries in an older battery pack before but they were NiMH cells and there is a higher level of complexity here. What I wasn't sure about was all those little wires ending at a strip that wasn't connected to anything - I thought perhaps these just went to each individual cell and were for the manufacturer to test a faulty battery pack with, but if they also go to the BMS then I've obviously bought a cell pack that doesn't allow for this. I'll call one of the re-celling firms instead.

I have a Tranzx BL03 battery from a Rayleigh Forge that is showing reduced capacity, although its voltage is holding up at 41V. I want to replace the cells and I've bought a pack from China that says it is specifically for this battery pack. https://www.ebay.co.uk/itm/36V-12Ah-for-Tranz-X-PST-JD-PST-I2C-BL03-Battery-Li-Ion-E-Bike-electric-bicycle/333556846789?ssPageName=STRK:MEBIDX:IT&_trksid=p2060353.m1438.l2649 However, it has no instructions and no pre-soldered wires on it. I can identify the + and - terminals, but having dismantled the original I can see there are a whole strip of thin wires in addition to the main pair which go the length of the pack and go I assume to each individual cells for testing purposes. I have no way of connecting these. Has anybody done a rebuild on this pack and could advise whether these are critical or whether I could just ignore these extra wires?

I have a Tranzx BL03 battery from a Rayleigh Forge that is showing reduced capacity, although its voltage is holding up at 41V. I want to replace the cells and I've bought a pack from China that says it is specifically for this battery pack. https://www.ebay.co.uk/itm/36V-12Ah-for-Tranz-X-PST-JD-PST-I2C-BL03-Battery-Li-Ion-E-Bike-electric-bicycle/333556846789?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649 However, it has no instructions and no pre-soldered wires on it. I can identify the + and - terminals, but having dismantled the original I can see there are a whole strip of thin wires in addition to the main pair which go the length of the pack and go I assume to each individual cells for testing purposes. I have no way of connecting these. Has anybody done a rebuild on this pack and could advise whether these are critical or whether I could just ignore these extra wires?

Thanks for that- will the original charger work with these newer battery packs?

I'm trying to help a friend who has an Ezee Torq which has been terribly unreliable since new. I persuaded her to take it to Onbike and they have duly fixed the electrical problems she's been having. However in the 18 months or so she's been unable to use it, both batteries have become useless. One will barely get her up a single hill and the other is completely dead. I offered to take a look to see if I could recell it, but I've only dealt with Nimh before and was a bit surprised at the shape of the cells in this Li one. This is a Phylion XH370-10J type. I can't find anyone selling individual cells of this type. As a last ditch attempt - can anyone tell me if its possible to obtain and fit new cells? Or is there any company that would do it for me? Onbike will sell her a complete pack for £500 but I suspect given all the trouble she's had with this bike, that will be the final straw that makes her cut her losses and revert to the car.

Bike no1 revived! Thanks for the motor - my original Giant has just flown up the drive in rude health after being hung on the shed wall for over two years! So that confirms it was a circuit board that failed on the first one, and a motor on the second. But, they can be repaired if you can get the bits. So now we have a spare electric for visitors -very civilised. Many thanks for your help. Alan