July 24, 20241 yr Not for the flyer but... while looking for ebikes on Vinted a couple of months ago, I spied this - I don't know if it's of any use to Panasonic man, beast or thing, but it's still there for £100. If suitable for someone who ends up finding this thread on Google, read Vinted's payment protection small print, and make an absurd lowball offer? https://www.vinted.co.uk/items/4432966614-panasonic-kalkoff-l-ion-ebike-battery?referrer=catalog Whoa here's another one: https://www.vinted.co.uk/items/4433150864-panasonic-ebike-battery?referrer=catalog £241.15 "Watt Boston", whatever that is, no charger: https://www.vinted.co.uk/items/4748805688-watt-boston-male-2023-250-watt-36v-black-ebike?referrer=catalog £315 slightly faulty Mirider: https://www.vinted.co.uk/items/4290536432-ebike-legal-pedal-assist?referrer=catalog £1050 Hai! Bike with "Expensive upgrades": https://www.vinted.co.uk/items/4722944135-haibike-ebike?referrer=catalog Rare and odd electricals turn up on Vinted. No listing fees, unlike ebay. Edited July 24, 20241 yr by guerney
July 24, 20241 yr Not sure, thus I like to test it first on the bench before I buy a battery. Now I'm unsure what voltage it is If the handlebar head unit is labelled 36 volt as you've found, the whole system probably is. The 15/6/29 on the motor may indicate the date made in 2015, the 36 volt units were being sold then. Maybe try asking Helkama for information? .
July 25, 20241 yr Not sure, thus I like to test it first on the bench before I buy a battery. Now I'm unsure what voltage it is Bench testing these motors will be difficult because when you apply voltage the motor will not rotate. It is a pedelec system and you have to apply a force to the pedal to rotate the motor and it will be difficult to gauge the motor response. I am not sure but you may be able to use the pedal assist plug for this.( I think one of the 2 spare plugs in the loom is intended for the walk assist function). You need to identify the 2 relevant wires and link these via a resister to simulate the walk assist button. Panasonic do not publish their wiring diagrams but you will find some useful wiring details and error codes in the following handbook. Panasonic Mittelmotor Technisches Handbuch (yumpu.com)
July 25, 20241 yr Not sure, thus I like to test it first on the bench before I buy a battery. Now I'm unsure what voltage it is 7S lithium. Anywhere between 21v and 29v.4v will work it, provided that you put the right signal on the third wire.
July 25, 20241 yr Author Send the pictures to my local Helkama dealer, he thought it was 36V. Now i will try to hook up a battery to test. If not working I have to investigate what the 3rd pin does
July 25, 20241 yr Send the pictures to my local Helkama dealer, he thought it was 36V. Now i will try to hook up a battery to test. If not working I have to investigate what the 3rd pin does It's been a long time since I dealt with one of those motors, but I have something at the back of my mind that says that the third wire something to do with the battery level display. Presumably, if the control panel can't get an idea of the battery voltage, it won't allow power. I might be completely wrong about that wire, though, so be careful.
July 30, 20241 yr Author Well, hooked up 36V to the bike, battery bar flashing, no other life. Tempting to put 36V to the 3rd pin, grey wire. But assuming it not that easy!?
July 30, 20241 yr Well, hooked up 36V to the bike, battery bar flashing, no other life. Tempting to put 36V to the 3rd pin, grey wire. But assuming it not that easy!? It is a pedelec. The motor will not rotate and therefore you will not see it working unless you pedal. Does it feel easier to rotate with the power on? Alternative may be to simulate walk assist function by connecting the 2 wires with a resister in the walk assist plug. I have not done this and therefore not sure. In the 26v batteries the grey wire has the same voltage as the main wire. It bypasses the fuse in the battery I assume to power the display and show error messages if the main system fails. Assume 36v will be the same.
Join the conversation
You are posting as a guest. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.