V50A:V50 small irradiation area 152 single lithium battery
V51A:[Power display] V51 medium irradiation area 25m2 double lithium battery
V51B:[Electronic display + solar energy] V51 medium irradiation area 252 double lithium battery
V52B:[Electric display + solar energy] V52 large irradiation area 40m2 three lithium battery
Verification Code