Our product battery solar panels are produced in Liaoning, the battery size can be customized, the types are divided into PERC, Half Cell, Bifacial, Double glass, All Black, MWT, IBC, HJT, hbc, N-TYPE, TOPCON, BIPV, Flexible, Overlapping, Foldable, panel size is 271*138*25/200*205*55/ 484*365*35/ 200*205*55mm, panel efficiency can reach 22%, CE certificate, warranty 3 years, household, solar panel type is monocrystalline silicon, polycrystalline silicon, battery type is lithium ion, lithium iron phosphate, controller type is MPPT, load power is 33W 60W 22W 11W, output voltage is 18V/5V, output frequency It is 50/60Hz, the working time of the product depends on the load power, and the product name is Portable Solar Panel.