Recommended bluetooth SOC meter to pair with overkill BMS?

[delvxe]

Tried to keep the battery setup in my van simple with just the cells, BMS, and electronic bits but am really dissatisfied with monitoring the battery through the bluetooth from the BMS. The SOC seems to be all over the place and a few other annoyances. Can someone point me to a product or discussion about something I can use to accurately monitor SOC via a bluetooth on my iphone? I don't need to have something with a screen as I intent to exclusively use the app.

If this isn't the appropriate forum, I apologize and would appreciate some direction.

 

[Bob B]

Have you calibrated the charge and load current?

 

[delvxe]

I calibrated the voltage in the app using my fluke meter. Is that what you are asking?

It was surprising close to the readings from my meter out of the box.

My Fluke multimeter doesn't measure current, and my other meter is a cheapo big box meter.

 

[Bob B]

The SOC on mine was off til I calibrated the current .... not the voltage. There should be a tab for doing this at the bottom of the screen if you go to config.

You may have to do a full charge to get things back in sync after doing the calibration.

Make absolutely sure you have an accurate way of doing this.