July 13, 20215 yr I'm monitoring ( on line via the Victron VRM portal ) a friends Freedom Won / Quattro / Victron MPPT installation and am noticing how the Freedom Wons cells are getting more and more unbalanced. At 100% full charge the max cell voltage is 3.77V with a cell max- min difference of 0.41V - Average was 3.40V . At the bottom end at 10% SOC ( only ever been below 40% once in the last 2 years due to loadshedding ) min cell voltage was 2.56V and cell max-min was 0.66V - avg was 3.16V. Is there a utility to manually initialise a cell balance routine ? How are you supposed to rebalance the Freedom Won if the internal balancer is loosing control?
July 13, 20215 yr Author I see today max cell voltage on their system went to 3.96V and BMS did not trip !
July 13, 20215 yr Author It is LifePO4. I have informed the owners and they are in touch with the installer and freedom won I have been told
July 13, 20215 yr I have a Freedom Won battery with my Sunsynk inverter. Can someone tell me how I can get the cell level data to monitor it?
July 13, 20215 yr Author 13 minutes ago, Bernardf said: I have a Freedom Won battery with my Sunsynk inverter. Can someone tell me how I can get the cell level data to monitor it? With the Victron the data is available on their portal. Does Sunsynk not have a portal also?
July 13, 20215 yr 6 minutes ago, NoordSolar said: With the Victron the data is available on their portal. Does Sunsynk not have a portal also? No on the Solarman portal you can only see stuff like battery voltage, temperature and SoC. Not info on the individual cells. Is there PC software with which I can view the info via the battery's USB port?
July 16, 20215 yr Hi guys ,i am busy building a lithuim battery. My system consists of Victron inverters and Victron charge controllers. I need a BMS that can comunicate with the Venus. Can anybody assist ?
July 16, 20215 yr I am building a 7p 16 s battery bank. I am using 112 100AH Sinopoly lithuim batteries.
July 16, 20215 yr Yes you are right i already got a Victron smart shunt for that purposr. The problem is i am batteling to get a 500AMP Daly BMS.
July 19, 20215 yr Yes you are right i already got a Victron smart shunt for that purpose. The problem is i am batteling to get a 500AMP Daly BMS.
July 19, 20215 yr A question would you build a 7P 16S battery bank or would you build 16 S seven off.
August 4, 20215 yr On 2021/07/13 at 9:45 PM, Bernardf said: No on the Solarman portal you can only see stuff like battery voltage, temperature and SoC. Not info on the individual cells. Is there PC software with which I can view the info via the battery's USB port? Did you come right? I'm looking as a similar install to yours, and this "unbalanced" cell issue has me a bit worried
August 4, 20215 yr Author Looks at the VRM data the freedom won system is still horribly unbalanced. Apparently installer and Freedom have been looking at the system remotely but I cannot get any sense from the owners of the system what they are saying / doing. For me I would not buy Freedom Won - their charging algorithms are very aggressive and don't seem to pull back when cells go out of balance . rather go with SolarMD. Full cell visibility is also available with SolarMD via their communicator device and their portal
August 4, 20215 yr 14 minutes ago, bobmabena said: Did you come right? I'm looking as a similar install to yours, and this "unbalanced" cell issue has me a bit worried No I haven't. I am going to e-mail Freedom Won directly and ask them.
August 12, 20215 yr On 2021/07/16 at 4:40 PM, vulgrim said: I am building a 7p 16 s battery bank. I am using 112 100AH Sinopoly lithuim batteries. Wow that's a huge capacity! 33.6kWh😳...Where did you buy your cells?
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