chrisc Posted March 4, 2023 Share Posted March 4, 2023 (edited) Went to visit a friend today who recently moved into a house in Hout Bay with an existing solar installation There are 4 x 260 watt panels that were installed in about 2013. These 4 are connected all in series to an Growatt 5kW inverter. Then there are another 4 x 390 watt panels fitted in 2021 but these are attached to a Victron 40 amp solar charger controller. One handy thing is that there is a Bluetooth app which shows what these panels are doing Both the Growatt and Victron are connected to a Luxpower battery which has 4 battery connections The previous owner stated that this is the most efficient way of managing the battery. Indeed, the battery’s SOC shows 96% The charge rate and voltage settings for the Growatt and Victron have been set to same levels Edited March 4, 2023 by chrisc Quote Link to comment Share on other sites More sharing options...
Chris Louw Posted March 5, 2023 Share Posted March 5, 2023 I use the same type of setup. Axpert inverter with 2 Epever MPPT SCC and 3 Pylontech 3000 batteries Axpert and Epever MPPT connected to batteries with busbar . Epever connected in parallel with same battery settings..Axpert settings slightly lower.Epever is the better SCC. Much more settings to controller charging. 1ste Epever installed 1 year ago. 2nd Epever installed 2 months ago. Solarassistant Rasp Pi connected to system. Only downside is the SA not recording PV from the Epever MPPT. Batteries info is reported by Solarassistant. Solarassisant working on program for Epever. Quote Link to comment Share on other sites More sharing options...
chrisc Posted March 5, 2023 Author Share Posted March 5, 2023 (edited) I have another question about a (different) friend's installation which seems to be misbehaving There is a Synerji (Axpert) 5Kw inverter, 4 x 455 watt panels and a Hubble AM2 battery The inverter bulk charge and float charge have been set to the voltages in the battery manual, ie 53.6V for both The inverter's display shows 53.6V During blackout at night, the load varies between 45w and 90w as they only have a few lights on The battery depletes very quickly and by 90 mins is down to 42V and then shuts down He contacted the installer who is yet to respond I looked at the charging settings and they appear to be correct Edited March 5, 2023 by chrisc Quote Link to comment Share on other sites More sharing options...
Chris Louw Posted March 6, 2023 Share Posted March 6, 2023 23 hours ago, chrisc said: The inverter's display shows 53.6V During blackout at night, the load varies between 45w and 90w as they only have a few lights on The battery depletes very quickly and by 90 mins is down to 42V and then shuts down @chrisca Battery that drops to 42v with 90 W is not good. What is the battery voltage when fully charged and no load.Best to have the battery checked by supplier. Quote Link to comment Share on other sites More sharing options...
chrisc Posted March 6, 2023 Author Share Posted March 6, 2023 It is 53.5V with no load Quote Link to comment Share on other sites More sharing options...
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