GX and VRM are showing 100% SOC. Lithium battery voltage is only at 13.29V. Lynx Shunt Charged voltage setting is 14.2V. What am I missing?
asked
Lynx Shunt reporting battery at 100% SOC, when it is not even close
1. Have you had a DC power loss and on restart it has gone to 100%, the other shunts can do this, not sure about the Lynx.
2. The device could have counted the Ah back in and get to 100% even without getting up to 14.2V at a low enough charge rate.
3. Your settings of 1.25 for Peukert and 95% for charge efficiency factor are wrong, these are for lead acid. For lithium values of 1.05 and 99% should be used. I do not expect that these are the issue but they will make the SOC drift.
No DC power loss.
I changed the Peukert value to 1.05 and charge efficiency factor to 99%.
Will probably run the generator to get the system to 100% charge and re-sync state of charge at 100%. Hopefully this helps. Really want the SOC to be pretty accurate and not 20% off.
Thanks!
Looking at the first shot, it's charging. Just let it keep charging. It will synch automatically. Once it synchs, the readings will be correct.
The charge detection time is possibly too short for solar charging. Clouds can cause the charge current to drop and create a false synch. It depends on local conditions. This is part of system tuning. I'd suggest dropping tail current to 2% or less and increase detection time. Charge voltage can be dropped a little as well.
