dlichterman
Explorer
So I think my sunsaver pwm charge controller is acting up - I noticed my 12V deep cycle battery wasn't getting charged under full sun. I am going to start probing wires this afternoon when I get home from work, but I've been thinking about switching to a MPPT controller to get that efficiency bump. I have 2x100W Renogy panels currently wired in parallel. From the specs:
So, if I'm reading this correctly - the maximum voltage these would produce if wired in series would be ~45V, at around 12 amps. Currently they are wired in parallel. With switching to putting them in series I would be able to run a charge controller such as the victron 75/15, right?
It seems that if I go to series, I would be getting more power in the mornings and evenings because I'll be getting up to charging voltage sooner. Seems like a no brainer to switch to MPPT, but at the same time switch to series because they can usually handle the higher voltage.
Any thoughts? Have I read things correctly on the specs of various devices?
Optimum Operating Voltage (Vmp): 18.9V | Open-Circuit Voltage (Voc): 22.5V |
Optimum Operating Current (Imp): 5.29A | Short-Circuit Current (Isc): 5.75A |
So, if I'm reading this correctly - the maximum voltage these would produce if wired in series would be ~45V, at around 12 amps. Currently they are wired in parallel. With switching to putting them in series I would be able to run a charge controller such as the victron 75/15, right?
It seems that if I go to series, I would be getting more power in the mornings and evenings because I'll be getting up to charging voltage sooner. Seems like a no brainer to switch to MPPT, but at the same time switch to series because they can usually handle the higher voltage.
Any thoughts? Have I read things correctly on the specs of various devices?