Overnight, I don't see any change in the 2 decimal places. On LFP, that might come into play as they do settle back down when the charge completes, but my NMC cells only lose a few millivolts if they sit for days. I am running no float but the float voltage is 56.7volts. For some reason, they felt the Bulk Charge should stop short, and going higher is called a Boost Charge. My Bulk Termination voltage is maxed out at just 54 volts in the custom menu, but my Bulk Boost let me dial it up and I am currently at 57.2 on my 14S NMC pack. Now I have to go into my garage and use the Blue Tooth app on my BMS. I may still add it to get the amp hour data and state of charge into my Insight monitoring. But I am curious if you do get the Batt Mon working right, how well does it track. My voltage goes from 51 to 57 volts in 6 hours of charging, and is nearly linear at my slow 26 amp charge rate. I have thought about getting one of these so the XW-Pro would have a better idea of my battery state of charge, but as it turns out, my NMC cells have a nice voltage slope, so working off of voltage alone is pretty good. But if it resets too often, raise it to slow it down. A lower value will allow it to trigger a resync quicker. It just has a range of 1-10 with 5 being the default. Then the 7th value (F1.6) is "Auto Sync Sensitivity". The next 2 are battery temp averaging and your time remaining filter settings. You can safely go down to 20% on your LFP system. This is the bottom percentage of your amp hour capacity where you want the battery monitor to go to zero remaining. Try 60 seconds and see if it will auto sync next charge cycle. It has to see volts above the first, and current under the second for this amount of time, then it will reset to 100% full. You might have to experiment to see what works well on your system. Your pack is 170 amp hour, so setting this to 5% would mean it has to see charge current fall below 8.5 amps while in absorb mode. Current has to fall below this number, with the battery above the float volts. This value is a percentage of battery capacity. Again, you should not be running any float current on LFP cells. I would think setting this to 3.4 volts per cell x 8 in your case = 27.2 volts should work. This might be an issue as it seems the instruction are written for lead acid. The first entry F1.0 is "Charger's Float Voltage", or in your case, absorb voltage, or maybe the voltage the cells rest back to after absorb cuts off. These are under the "System Properties Settings" menu. It can auto synchronize each time the battery reaches full charge, but for that to work, several settings need to be correct to match your charging settings. At that point it should read 100% and count down correctly. With a fully charged battery, you hold the left and right arrows in for three seconds, and the display should change to "Full". Then you fully charge the battery and then do the synchronization. The default reading when you power up the battery monitor should be 75%. Since you are running LFP, set this to your absorb volts. You also need to input the float charge voltage. If you are not full cycling, it is common to set this a little smaller, so 20% is 20% of what you want to use, not 20% of the maximum. The battery monitor actually counts the amp hour going in and out of the battery to get a more accurate estimate of the true state of charge.įrom the manual, you do need to tell it your actual battery capacity. You can easily have a 20% charge in state of charge with basically no change in voltage. With your battery bank being LFP, using the voltage to estimate the state of charge is not very accurate. I am not using the Schneider Battery Monitor in my system, so I don't have any hands on time with one.
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