1/6/2024 0 Comments Victron battery shunt![]() The Charged Voltage I set a little lower than Float, but bear in mind that Float V can vary with the seasons (temp comp), so allow for that. Eg if you're drifting downwards, raise the CE. Mine worked out at 1.16.Ĭharge Efficiency you can fiddle with, ideally to return you to the same SOC you saw the previous days at the same Tail. Then feed them into the Victron calculator. try to find your batt capacity rating at two different C levels, say C5 and C20. There are some kWh figures in the History section which are worth a look though, because they aren't subject to 'non-definition'.Īll batts are different, so you'll need to determine your own settings. And I'm not sure what Victron might have coded in if they actually manage to return to a balance. So the Ah going out is going to mean something different discharging at lower V than charging at a higher V. Hi trouble with Amp-Hours is that they mean nothing without a Voltage applied to them. So far I'm liking the SmartShunt and hope the get the settings dialed in so I can keep closer tabs on our trailer batteries. ![]() And usage of 70A-hrs is quite normal for us. And yes - the Battery Capacity is programmed to 210A-hrs. That doesn't work out - there seems to be some other factor in the SoC calculation -72A-hrs should be about 65% of my 210A-hr battery bank. The next morning when our SmartShunt showed -72.4A-hrs, the SoC indicated 72%. Now the main question I have is with the State of Charge calculation in the SmartShunt - which I assume works the same as all the BMV700 series monitors. For networked devices - how come you don't have the charger tell the battery monitor (over the VE.Smart network) when the battery is fully charged? The charger switching into Float mode seems a more accurate indication of 100% charged than parameters in the battery monitor. The second day I was watching the charging progress carefully, and the MPPT switched from Bulk to Absorption at 14.4V (about 92% indicated SoC with about 20A-hrs to go) and then switch to Float right as the SmartShunt indicated 100% SoC and 0A-hrs consumed. ![]() ![]() So I tweaked both of those for the expected charged conditions from the MPPT charge controller, but then realized that when recharging from shore power, I'll never get over 14V, so the Tail Current will probably be the main thing which determines 100% charged. The default settings of 13.2V Charged Voltage and 4% Tail Current had the State of Charge resetting to 100% much too early - well before bulk charging was finished. I've only used it a few days, so still figuring out the proper settings. I recently added a SmartShunt to be able to monitor battery power more closely, especially when charging from sources other than our solar panel - like shore power or a generator or from the tow vehicle. I've been using a SmartSolar MPPT 100/30 for a couple years now, and have a good understanding of the normal electrical usage on our RV. I was required to select a topic, and BMV seemed most relevant, as my main question is about the SmartShunt - which should be included in that category. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |