This summer, I went on a ebike journey and was left without battery 15 km. away from home. When I finally reached home completely exhausted, it was time to replace that key.
Finding the right key
Based on my model, I looked on a Chinese platform. I easily managed to find one but will that fit inside my battery case?
These models are mechanically pretty standard: 2x M6 threaded holes, same distance between holes center (Check the holes alignment because there are different types.) Other dimensions may vary...continue reading. The functionality of this new switch is different when looking at the pin position (retracted or not retracted). See below
In term of electrical parameters, I need a switch that supports around 10 A for a short period. (Pmotor = 48V x 10 A = 480W)
I removed the broken switch. I was using the bike with a jumper cable and anti-sparks connectors. It worked pretty well.
Anyway, time to install the new stuff. The 2 screws fitted without any problems. The keylock was just a bit off centre (see picture with plastic ring removed). Tape can be used to close the gap!
However, the functionality of the lock is different compared to the original one and could be problematic. Let's see why.
There are 3 positions: ON/OFF/LOCK
"LOCK" is self explanatory. The pin is fully extended and lock the battery in place.
"ON/OFF": On these 2 positions, the pin is completely retracted and you may loose your battery :-(
This is the main difference with my original key. You may or may not want this behaviour! My battery case is a tight fit on its support. Therefore, I am not too concerned about this.
All in one, I am quite happy with this new hardware.
Happy biking