Product name 
300W 4PCS flexible solar panel modules Household solar panels with 40A controller
Maximum power (Pmax) :300W (single) *4
Output tolerance: ±5%
Maximum system voltage: 700V DC
Tolerance: +/-5%
Open circuit voltage (Voc) : 19.2V-36V
Maximum system voltage: 16V-24V
Isc temperature coefficient: (010 +/- 0.01) %/C
Temperature coefficient of Voc:-(0.38 +/-0.01) %/C
Temperature range:-20℃ to +80℃
Connector: MC4
Battery efficiency:20%
Weight :12.55kg
Size: 1180*540*2.5mm
4pcs 300W +controller /single 300W solar panels $306/sets$76/pcs