We have been on solar for just over a year now and have had no real problems until Dec when it got cloudy for a couple of weeks. I have a generator hooked into my system and run it when needed to keep the batteries charged. I check the acid level once a month and add water when needed. My batteries have site windows that are green when the batteries are charged and clear when not. Around the beginning of Dec I had one batter where the negative cable connects to the inverter that stopped showing green. I checked the SG on the battery and it was reading 1.22 on one cell and 1.18 on another. I ran the generator, and ran equalize but it would not charge up. On the advice of someone else on solar I changed the order of my batteries but that did not help and other batteries started losing the green light. The SG readings were anywhere from 1.18 to 1.24 across the string. I always start the equalize from the charge controller but was told to start it on the inverter once the batteries were in float. I ran the generator for 3 hours until the sun was full on my panels with equalize on for about an hour and a 1/2. I now have 5 green lights and SG reading of 1.22-1.24 randomly selected batteries and cells. The day was sunny and my charge controller said resting the rest of the day with the inverter saying Inverting 62 volts. It is like the inverter or charge controller are preventing the batteries from charging up all the way. With the generator running the system will be in bulk for less then and hour, then absorb for about and hour then go to float. I have the EQ set to 62.2, the Absorb set to 59.2, the float set to 58. As soon as the sun sets the charge controller reads 49.4 or 49.2 and by morning is down to 48.3. How can I get the batteries to fully charge and my SG reading back to 1.26? My system has been up and running since Jan 1st 2017. I plan on adding more panels this year but hope I dont have to buy more batteries.
3 Rec 280 solar panels, 3 Q-Cell 280 solar panels, 8 Crown 6V Flooded - 395Ah Battery L16 wired in series for 48 volt, Midnight classic 150, Magnum 4400W 48V Parallel Inverter, Magnum Mini Panel 175A 30D.
3 Rec 280 solar panels, 3 Q-Cell 280 solar panels, 8 Crown 6V Flooded - 395Ah Battery L16 wired in series for 48 volt, Midnight classic 150, Magnum 4400W 48V Parallel Inverter, Magnum Mini Panel 175A 30D.
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