mangetalife

Thank you for all you comments, 1. DOD, I set my batteries to go back to grid @ 35% or 65% DOD for the reason that if there is Load shedding there is still room to go to 80% DOD 2. Thank you yes, Typo 🤪

Hi All I have been running 2x Pylontech UP2500 on an Axpert VP-3000 24VDC off Grid System. Using MultiSIBControl I am able to monitor the Inverter, Panels and the 2 Batteries. My findings are that the BMS systems work very well and have experimented with the Bulk and Floating charge settings to optimize the battery SOC. The UP2500 Charge Voltage is 28.2-28.5VDC and discharge at 23.3-28.5VDC. When the BMS reaches the set Floating Voltage the charge is stopped by Inverter and the BMS puts the Batteries go into Idle mode. The problem is, when do the UP2500 reach 100% SOC? If one sets the Floating charge to 27.2VDC the batteries hover at about 94-96% and this is because the individual cells are not charged to their full capacity. Thus I gently set the Floating charge to a point where 100% SOC was achieved. Here is a breakdown of the system and setting that I used to achieve the results. 6x 300w panels with the potential on 50A charge split in 3, 1 the Inverter load and the balance split between the 2 Batteries. The batteries also balance each other when connected as Master-Slave. The recommended Charge rate for the Batteries are 55A but at an average of 18A each the charge to 100% within about 4H My Inverter settings. 02 = 60A - (15A Grid) 05 = USE 16 = OSO 26 = 28.4VDC 27 = 28VDC (Individual Cells at about 3.4VDC) Please also Note the the BMS will shut the Charge down if the Battery capacity exceeds 28.5VDC With the logging capabilities of MultiSIBControl and SOC settings I am able to control the low SOC to Grid and reconnect SOC levels with timers based on the SOC. The Batteries are able to carry my appliances through the night with the a SOC at about 40% the next morning. I have set the minimum SOC to Grid at 35% giving enough space for charging to commence before going to grid. Of course, these results depend on the load during the night and my average is at between 2-3kWh. Thus, Contrary to Fears on using Axpert with Pylontech, if one stays in the ranges of the Battery Charge and Discharge ratings the system should for one never undercharge the Batteries and keep the batteries happy and healthy as LiPo batteries like to be charger to the correct voltage up to 3.6VDC/Cell. Please note my finding have been an exhaustive project for the last 6 months and I am sharing my findings with your and am in no way recommending these settings and will not be held liable for any damage you may incur with your own experimentation. However the math's should speak for itself.

Hi All I have been running 2x Pylontech UP2500 on an Axpert VP-3000 24VDC off Grid System. Using MultiSIBControl I am able to monitor the Inverter, Panels and the 2 Batteries. My findings are that the BMS systems work very well and have experimented with the Bulk and Floating charge settings to optimize the battery SOC. The UP2500 Charge Voltage is 28.2-28.5VDC and discharge at 23.3-28.5VDC. When the BMS reaches the set Floating Voltage the charge is stopped by Inverter and the BMS puts the Batteries go into Idle mode. The problem is, when do the UP2500 reach 100% SOC? If one sets the Floating charge to 27.2VDC the batteries hover at about 94-96% and this is because the individual cells are not charged to their full capacity. Thus I gently set the Floating charge to a point where 100% SOC was achieved. Here is a breakdown of the system and setting that I used to achieve the results. 6x 300w panels with the potential on 50A charge split in 3, 1 the Inverter load and the balance split between the 2 Batteries. The batteries also balance each other when connected as Master-Slave. The recommended Charge rate for the Batteries are 55A but at an average of 18A each the charge to 100% within about 4H My Inverter settings. 02 = 60A - (15A Grid) 05 = USE 16 = OSO 26 = 28.4VDC 27 = 28VDC (Individual Cells at about 3.4VDC) Please also Note the the BMS will shut the Charge down if the Battery capacity exceeds 28.5VDC With the logging capabilities of MultiSIBControl and SOC settings I am able to control the low SOC to Grid and reconnect SOC levels with timers based on the SOC. The Batteries are able to carry my appliances through the night with the a SOC at about 40% the next morning. I have set the minimum SOC to Grid at 35% giving enough space for charging to commence before going to grid. Of course, these results depend on the load during the night and my average is at between 2-3kWh. Thus, Contrary to Fears on using Axpert with Pylontech, if one stays in the ranges of the Battery Charge and Discharge ratings the system should for one never undercharge the Batteries and keep the batteries happy and healthy as LiPo batteries like to be charger to the correct voltage up to 3.6VDC/Cell. Please note my finding have been an exhaustive project for the last 6 months and I am sharing my findings with your and am in no way recommending these settings and will not be held liable for any damage you may incur with your own experimentation. However the math's should speak for itself.

Sorry, I was just talking to myself😬. Like my sister says, Google knows everything...and is noob friendly, LOL

I have been using both Watchpower and SolarPatrol. I have a small net PC running with its own WIFI output and am able to monitor with SolarPatrol get all I need to using an webserver. The reason is that I have the PC is because I use a PLC (OMRON) to control panel cooling, Irrigation and Pool timing and VSD (LSIS) control, etc. and with a Scada VNC HMI front end for mobile phone control. Does anyone know whether Watchpower has a version with a webserver. I have trolled the internet without joy but perhaps someone can direct me if so. I really don't want to get the WIFI or Bluetooth units as my PC does the job well with SolarPatrol which has a Free without the need for a license version in their Facebook page.