Does this imaginary voltmeter that I want exist?

[Dui ni shuo de dui]

I don't need voltage information accurate to decimal places while riding. I just need a general idea of sag and rebound.

It's useful to have precise voltage information to get an idea of the remaining capacity though.
Do you have an other voltmeter for that?

 

[harrisonpatm]

It's useful to have precise voltage information to get an idea of the remaining capacity though.
Do you have an other voltmeter for that?

Absolutely, I have the BMS, and I'm considering a coulometer as well

 

[Papa]

$28



$18

 

[harrisonpatm]

$28

View attachment 351581

$18

View attachment 351583

Nice ones! I found and purchased this new one from eBay that is much larger and will work nicely:
DC 0-50V Analog Voltmeter Analogue Voltage panel meter Dia. 66.4mm DH52 | eBay
But the ones you have pictured look way cooler. Especially that first one. Antiques, right?

 

[Papa]

$10

Vintage Jewell Pattern No. 57 DC Direct Current Volts Meter Gauge 0-150 V 761995 | eBay

Look at pictures for condition.

www.ebay.com

 

[DogDipstick]

This product probably doesn't exist, but I just thought I'd check in case someone has heard of those before.

The product has existed for a very long time. Lol. My Yankee is from 1926.

No fancy electronic digital analog conversion needle sweeping needed.

....this one is an amp gauge..... got it for 2$ from the junkman. Works great. they come in both Amp and Volt.

Pocket watch volt meter - Google Search

 

[harrisonpatm]

I used draw.io to make a new background for the meter. The drawing was fine, but the public library's color printer left a lot to be desired, very low quality and pixelated.


My wife saw what I was working on. She's far more detail-oriented than I am, and took it upon herself. I kinda like the handwritten aesthetic.

 

[TommyCat]

Been enjoying your thread and creativity on repurposing the meter.

When I was looking at the different analog meters, in my mind I would consider getting one with a working voltage of 0 to 100 volts. Then slightly modify the face to represent 0 to 100 percent of battery charge. Coloring in the levels of charge, GREEN, YELLOW, and RED. Sure, you'd have to replace the resistor...
Just a thought.

 

[harrisonpatm]

Been enjoying your thread and creativity on repurposing the meter.

When I was looking at the different analog meters, in my mind I would consider getting one with a working voltage of 0 to 100 volts. Then slightly modify the face to represent 0 to 100 percent of battery charge. Coloring in the levels of charge, GREEN, YELLOW, and RED. Sure, you'd have to replace the resistor...
Just a thought.

Sure, but if you don't want to change the resistor, and still want to do the same as what I did. You don't need to get a 0-100v. Get one in the scale of your battery voltage.

As an example, a common voltage for ebikes is 14s Li-ion. 2.5v per cell x 14 = 35v, 4.2v per cell x 14 = 58.8v. 58.8-35 = 23.8v. So you could get this 0-25vdv analog voltmeter, and then add this diode in series so that the meter doesn't start until 33v. And that's done. Make whatever notches you want on a new piece of paper behind the needle: percentage, green-yellow-red...

I'm already thinking that I want to add this type of meter for my 14s home powerwall system.