July 9, 20215 yr Hi All I've now had my solar set-up for about a month, and thought I would share my initial thoughts and have some questions. My set-up consists of: 12 x 460w solar panels - 6 on each MPPT, 1 string facing NE and 1 facing NW. 2 x 3.5 Pylontech batteries 1 x 8kw Sunsynk Inverter Photos of the set up attached. Very happy with the work. Neat and unobtrusive. I have everything (except underfloor heating) running through the UPS side of the Inverter, and also have 2 solar geysers. Now that its winter, and need to use the element to top up the geysers, I have set the timers to come on in the middle of the day when the sun is shining, and the geysers remain hot enough for night time showers. My batteries are currently getting me though the night, until the geysers kick in at 05:00, which then quickly depletes the battery and Eskom takes over. Had originally thought I may purchase an additional battery, but seem to be fine for now with 2. Ofcourse I want to preserve the system to last as long as possible and therefore have a few questions, which I am hoping some of the forum's experts can answer? Will these batteries still last the expected 10 years even though am cycling them currently from 100% to 20% every night? Even though these batteries have a DoD% of 95%, I have set the SOC% not to go below 20%. Am I being too cautious or can I cycle the batteries down to about 10% SOC every night. What should I do if I am away from home for about 4 weeks? Is it fine to keep the system connected? My concern is the batteries sitting at such a high SOC% for so long as will have almost nothing depleting the battery at night. Must also just say how amazing this forum has been. Would never have been able to make such an informed decision about my set-up without this forum. You guys are great! Thanks All Mark
July 9, 20215 yr Hi @Mark M nice setup. Purely from the size of your inverter 2 more batteries would be a good idea and you do have the space for them. The recommended discharge rate is 37 apms x 2batteries x 48 volts= 3552 watts. Which is half of what your inverter is capable of supplying. On the pv side you have 12 x 460 watt panels x 5 hours = 27600watthours potential production per day which is plenty to charge 4 batteries.
July 10, 20215 yr Another Superb SunSynk installation..... man, the neatness is +A class, well done. Please PM me your installer details and pricing
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