Luna X1 Advanced Battery and power wiring troubleshoot
WARNING : This guide will ask you to open the battery and measure some voltages. This can be dangerous if you are not experienced with this kind of task. Please do not attempt this if you are not confident in your skills. Seek help from a local expert instead. If you choose to proceed, you are doing so at your own risk.
You tried the basic M600 troubleshooting and still no power? No display or nothing:
Make sure that you have voltage going out of the battery , you can measure the voltage from the XT60 like explained in step 3 of the basic troubleshooting or you can measure the voltage from the battery direct. I recommend you start from the XT60 first. If you have voltage there it means the battery is likely fine! IF you dont then you will have to remove the battery and measure from the terminals under the pack.
Please watch this video :
Now what you don't see int he video is were to position your probes on the battery terminals:
With the battery turned ON, just stick your multimeter probes in to the 2 outside terminals (the inner ones are not connected),
B) If you have voltage from the battery (41V to 54V), Then measure the voltage from the Xt60 male connector that is plugged into the motor, Simply make sure the battery is inserted and powered on, unplug the XT and measure from the male side (not on the motor).
If you are not measuring anything going into the motor Or the display power up and then just quits right away? please remove the battery cradle and inspect the back of the male terminal, make sure the no wire came loose or pulled out.
If you have the Fisher Fab house LED it should look like this
Note for the Fisher LED, if you light and motor/display do not power up then start with unplugging this yellowfins connector (XT30) and try again.
If you have a broken connection (and not sure how to fix it) or a battery that still does not work after inspecting the connections, please open a support ticket at support@lunacycle.com
You may continue with the basic troubleshooting for other tip and advice, click here
Battery is not charging / BMS is in fault
When you connect the charger to a battery that is not at 100% SOC (state of charge), the charger status LED should be red not green. If it's green that means the charger thinks the battery is charged. So what can be the problem?
1) Charger is defective
2)Charge port is broken (a wire is disconnected from the back, or the - tab or +pin are damaged)
3) BMS is in fault.
1) So make sure that the battery is still working, so plug it in the bike and see if it still works. If it does not work go back to the section above this.
The first step would be to rule out the charger, so if you have another 48V Li-ion charger you can try it, if you have a 52V charger you can also try it but only for a few seconds as you don't want to go over the 54.6V limit. Or you can try this charger on another ebike or 48V battery (if you have access to it). If you don't the best way to know if it's working is to do a jumpstart on the discharge, that can do 2 things, first it can clear a BMS fault (#3) and it will confirm that the charger is good or bad
Jumpstart procedure
Se have a in depth guide on general battery issue and if you click the following link it will take you to it, just scroll down to step 2.2 and it will show you how to do it on a battery that is pretty similar to the X1 . Click here to be redirected
All you need is t pieces of wires to be able to link the battery to the charge port. IT is easier if you have 2 set of hands.. If not what I do is tape up the wires to the charger barrel end and work on the battery with my 2 hands. Remember, this is safe but only charge for a few seconds... you are bypassing the BMS charging protections by doing this. If the charger works, go to step #2.. if the charger does not work, it means the charger is likely bad!
This is the polarity of the connector, battery in front of you, back facing you , connector at the bottom, the right pin is the positive (RED) and ground (BLACK) on the left. You can use a multimeter to be sure!
Polarity of the charger barrel end, positive (RED) is the inner hole, black is the ground outer sleeve, make sure not to shot them out. I personally tape them good to avoid any movement.
This is a shark battery but it's pretty much the exact same on your X1 battery, same kind of terminal (except the positive is on the left on the shark) and same charger
2) Charger does work fine on the discharge connector
That means the issue is in the battery, it can be simply that the wires inside the battery top are not making contact with the back side of the female port. So open the battery top and inspect the wiring (if the battery is under warranty email support first). Can be something easy to spot. Have a look at the 2 first pictures of the advanced troubleshooting section (just scroll up a bit) you will have 2 wires going to the barrel end, see if one is detached.
If you haven't watched the video , now is a good time :
If you have a multimeter best would be to poke the insulation of these 2 wires to measure the voltage (see video), you should have the exact same voltage that you have at the discharge connector were you did the jumpstart. If you do have the same voltage then that can be a confirmation that the actual charge port is bad, in this case we case help you, you just need to open a support ticket (if you already have one open just reply to us)
If you don't have any voltage reading that means the BMS is in fault, likely a permanent fault because you just did a reset with the jumpstart. in this case open a support ticket (if you already have one open just reply to us)
Replacing the main harness
With the motor fully removed ,carefully tie dental floss or a used shifter/brake cable (or any flexible small cable) to old harness at display / throttle plug , pull from bottom and remove old harness leaving guide wire in the frame . Carefully tape or tie guide wire to new display /throttle plug and push / pull gently til plugs come out of hole, be careful not to pull too hard. The junction where the throttle /display split it too big to fit thru frame hole so it stays inside the frame.
Battery contacts maintenance.
Over time the battery contacts needs to be taken care of as they can get loose and that can lead to terminal getting hotter. This is a simple trick that will ensure that the contacts have good pressure on the terminals. you only need a pick or a tiny jewelers flat srewdriver
Simply pry both tabs on the positive and negative (it's the outer ones on the x1)
The next picture is a X2 battery, the X1 as the same spring tabs but you have 5 instead of 4
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