Today we started a new season with our RC models on the airfield. Days are now longer and the Sun provides more energy to the off-grid system which is powered by one standard sized solar panel.

Nominal peak power (Pmax):   225 W
Maximum power voltage (Vmp): 30.2 V
Maxium power current (Imp):  7.44 A
Open circuit voltage (Voc):  36.6 V
Short circuit current (Isc): 8.06 A

For storing captured energy we use Panasonic LC-XB12100P battery with a capacity around 100 Ah and some spare car batteries with the capacity around 55 Ah, thus total capacity is 200+ Ah.

Last year the MPPT tracer 1210a provided 127 kWh and today it juiced the battery to 13.8 V which is considered fully charged.