42OhmsPA
What's in a title?
Thank you very much for those values. I'll try entering them tomorrow.I just measured the JBD SP16S020 V1.1 at .015A @ 26.4V so idle power draw with bluetooth dongle running is about 0.4 watts. After 60 seconds of no activity (no charging, discharging and with BT ap closed) it shuts and goes below anything I can measure with DC clamp. Even if the ap.is running in the background of my phone the Bluetooth remains active.
I just found the calibration section in the Overkill BMS ap but haven't messed with it yet. My clamp meter always reads about 5% low so I'll have to try that with actual inline Fluke ammeter. It will be interesting if there is a way to improve it's low power draw sensing I'm sure that is the main cause of drift. From what I have seen the charge and discharge readings seem accurate from JBD.
@42OhmsPA Im trying the 100% at 3.35 to try and get a more accurate reset when resting and that should be easy to dial in (99.5% resting basically).
I noticed the the generic lifepo4 normal and lifepo4 lite 20% 40% 60% 80% voltage settings are way off compared what JBD set from the factory. This is a screenshot of the custom settings JBD sent me, which is much more accurate and precise. If we can get a general consensus on these numbers we will have a much better chance of gauging SOC at any time with a quick rest.
I attached some crappy photos of the current settings I'm running.