Solar panel 1. Different types:Mini, Round, Small, Big 2. Monocrystalline silicon 3. Polycrystalline silicon 4. High quility Solar panel book / PV panel cell Power: 10W/pc, ttl 20WVmp (Operating voltage): 18VVoc (open circuit voltage):21.6VImp (operating current):0.56AIsc(short circruit current):0.62A FEATURES:1,High module conversion efficiency, through superior manufacturing technology .2, ...