Battery percentage reader?

I connected my battery percentage reader to the VESC positive and negative wires but my reader still says 100% battery power, I ran out of power tonight while riding it. Does anyone know how to fix my issue?
<img src="https://esk8content.nyc3.digitaloceanspaces.com/uploads/db2454/original/3X/e/3/e3a1ff1eb99e20a777c17fd2e4e7518a685f0b94.jpeg" width="669" height="499"><img src="https://esk8content.nyc3.digitaloceanspaces.com/uploads/db2454/original/3X/2/1/21cd450acd2ab83edc7088dd245dc9f770c94f7c.jpeg" width="669" height="499">

I connected my battery percentage reader to the VESC positive and negative wires but my reader still says 100% battery power, I ran out of power tonight while riding it. Does anyone know how to fix my issue?

Make sure your meter is set up for your battery. There should be a little button on the back to set the number of cells in your pack. (I can’t remember if you have to hold the button while powering it on to access this setting)

For example, if the meter is displaying percentage based on a 6S battery when you are really running 10S, it will always show 100%.

im running 2 3S 5000mah batteries. ill check it out, thank you.

Hold the button on the back before you power everything up. Options Weill come up just go to 6 and then turn the system off and back on

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I made the same mistake and did not set my battery reader to 24v. It was only reading 12v. The problem is most seller of this reader do not include a manual.

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See this thread:

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How to get additional functions

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Mine doesnt have the button like this one has.

Show the back side

Mine didn’t either. I bought some here and added it myself. uxcell 50pcs 6x6x4.3mm Momentary Tactile Tact Switch 4 Pin DIP Through-Hole https://www.amazon.com/dp/B0090VQK7C/ref=cm_sw_r_cp_api_rWSTybXHPZ4Z5

If it doesn’t have the programming switch on the back, you could just program it with a wire the same as with a momentary button. Temporarily short the terminals shown in the video during power on; release; then short them again and again until you reach your desired setting (each short is the same as a button press)

The soldered switch Namasaki posted is the best option though

I tried shorting the contacts with a wire but it didn’t work.

Hmm then why would a switch work? It’s theoretically the same thing. No?

That’s what I thought but I tried again and again with a wire and it didn’t work. The switch doesn’t connect all points together but connects 2 points on one side and 2 points on the other side at the same moment. It’s near impossible to achieve this with 2 jumper wires. Might as well just get and install the switch

I trust ya! Strange they don’t include the switch by default

Mine has a single “K1” switch on the back. But it is definitely a different model than yours

I have this lcd display. It works as described above :slight_smile:

That’s the one I use. Got it off Ebay for cheap. Looks like the same hardware that’s on the Enertion Space Cell except that Enertion’s doesn’t have the white connector. The wires are soldered directly to the board.

Heres a better pic. of mine, It has the 2 switches on back though (K+ and K-). what sucks is that they only sell the buttons in bulk, all i need is one. Thank you all for sharing your knowledge with me, much appreciated, again i just learned something new.