Since the monocrystalline silicon cell has four chamfers. After cutting, because the arrangement position is different, there will be some slight gaps in the appearance of the same batch of goods, but the performance of this pile of products has no effect. Therefore, when you receive the item, it is not the wrong item. Power （Pmax）：10W Open Circuit Voltage（Voc) ：21.6V Short Circuit Current （Isc）：0.6A Maximum Power Voltage（Vmp）：18V Maximum Power Current（Imp）：0.55A Size : 440*190*3mm/17.3"x7.5"x0.12" Package Weight: 376g/0.8lb. STC:lrradiance1000w/m2，Temperature 25 C, AM=1.5 reasons to own a Solar Battery Trickle Charger: Battery Naturally Discharge - Automotive batteries naturally discharge when not in use. Solar trickle chargers can be left unsupervised and can be left connected as they deliver power safely at low-amp.Vehicles' battery has a small but constant consuming - Modern vehicles have upwards of 30 body control modules (computers), alarm systems, immobilizers and lock monitoring. These units all consume electricity from the battery. That's why a vehicle, in 1 or 2 weeks, with no or little use the battery get drained. Battery life is shortened if it is not kept charged - a 12V battery that is not correctly maintained above 12.4V will suffer from sulphation. Sulphation is the main cause of battery died. That's why the ATV battery easy goes to dead when vehicles are left sitting idle for long periods. reasons to own a Solar Battery Trickle Charger: Battery Naturally Discharge - Automotive batteries naturally discharge when not in use. Solar trickle chargers can be left unsupervised and can be left connected as they deliver power safely at low-amp.Vehicles' battery has a small but constant consuming - Modern vehicles have upwards of 30 body control modules (computers), alarm systems, immobilizers and lock monitoring. These units all consume electricity from the battery. That's why a vehicle, in 1 or 2 weeks, with no or little use the battery get drained. Battery life is shortened if it is not kept charged - a 12V battery that is not correctly maintained above 12.4V will suffer from sulphation. Sulphation is the main cause of battery died. That's why the ATV battery easy goes to dead when vehicles are left sitting idle for long periods. Applications Package Include: 1pcs 18v/10w Flexible solar panel 1pcs DC with Alligator clip cable 1pcs DC with Crocodile clip 1pcs DC with USB