CTD
New Member
Hi, newbie here, currently have set up a 4 x 190W array through a Renogy Rover Li 40A MPPT controller with 4x 12v 100Ah GEL DiaMec batteries for my father (currently as a 12v system to run a TV and some lighting), but looking at going to larger array and double battery storage into 48V system with 12 DiaMec GEL batteries https://diamec.com/e/product/MODEL-DMD12-100-GEL-12V100AH-94.html (4 in series, then paralleled x 3) so he can run a small fridge and water pump from tank (it's a 190W water pump) as well as some small appliances occasionally, and a window air-con during the day during summer, so basically only when it is hot and sunny.
So, I have looked at the data sheet for Growatt and it doesn't mention GEL batteries specifically, so my question is, do the GEL DiaMec batteries meet the specs of this inverter? https://gwoffgrid.com.au/product/growatt-spf5000tl-5kw-48v-offgrid-inverter/
MY plan is to use 4 or 5 arrays in parallel with each array having 3 panels in series (Suntech 190W panels, Voc 45.2V, Vmp 36.6V), so around 140Voc and 115Vmp, as per the data sheet. Current per panel is 5.2Amp, so 15.6A/array, and if I go 5 arrays in parallel, that will be under the 80A max PV input. The other question I have is that it says on the data sheet that it requires 60V-115VDC for operating voltage, so does this mean that the MPPT controller will stop charging if the voltage drops below 60VDC?
Thank you for your advice.
And does anyone see any problems with this intended set-up, or is there a better configuration with what I am looking at doing?
So, I have looked at the data sheet for Growatt and it doesn't mention GEL batteries specifically, so my question is, do the GEL DiaMec batteries meet the specs of this inverter? https://gwoffgrid.com.au/product/growatt-spf5000tl-5kw-48v-offgrid-inverter/
MY plan is to use 4 or 5 arrays in parallel with each array having 3 panels in series (Suntech 190W panels, Voc 45.2V, Vmp 36.6V), so around 140Voc and 115Vmp, as per the data sheet. Current per panel is 5.2Amp, so 15.6A/array, and if I go 5 arrays in parallel, that will be under the 80A max PV input. The other question I have is that it says on the data sheet that it requires 60V-115VDC for operating voltage, so does this mean that the MPPT controller will stop charging if the voltage drops below 60VDC?
Thank you for your advice.
And does anyone see any problems with this intended set-up, or is there a better configuration with what I am looking at doing?