I am able to calibrate temp, voltage, current, and “charge” the unit up to 100% SOC on a power supply acting in place of a real battery without any issues and I seem to be able to discharge to varying degrees. Sometimes BQEVSW reports a random reset to 100% SOC. It might go down to 67% during discharge and then reset (and sometimes restart counting down for discharge, sometimes not) Sometimes it might stop around 80% or so. I have never gotten it to go any lower that 60-odd % Our expectation is to be able to go from 100% to 0%-ish and be able to read that data. All we need is that capability for our application.
Removing power and restarting does indeed bring us back to 100% SOC and we can discharge OK for a while then SOC jumps back up to 100%.
I also noticed the CHARGE and DISCHARGE flags are BOTH set at times when doing a discharge. Is this normal?
We are pretending this is a 2AH battery for our testing. I set design capacity to 2000 mAH but it didn’t update on the DATA RAM screen until I set it in the QMAX screen. Available capacity, etc., shows to be close to 2000 mAH, but not exactly. Maybe 1947 mAH or something.
Our “cells” are a 15V power supply. I have tried varying the voltage down to 8V and tried it again. Didn’t help. How much of a slope do we actually need?
What is the biggest design/qmax capacity can we have? Our application will need 75AH-100AH.
TNX,
-HRS
