Etfe 21w foldable solar charger Panel features: Etfe lamination solar panel type charger Sunpower over 23% high efficiency monocrystalline cell Dual ports design for quick charging purpose Usb port for charging the smartphones, tablets, power bank and most digitial products 18vdc output for laptop or storage battery charging purpose Built-in smart ic ensure the stable output on voltage and current Eyeholes design for easy attaching on backpack Stable & reliable performance and high output Waterproof, compressive strength, and scratch- resistant Long lifespan and light weight, low transportation cost Upto 2 years warranty Panel power, color and logo customizable Oem and odm available Electrical characteristics Item no. Ft-85 Lamination materials Etfe & fabric lamination Dimensions 300 x160 x 20mm Cable/connector Dual usb ports Folded size 640 x 300 x 10mm Weight 0.48kg Cell type U.S sunpower mono cell Panel color Black Cell efficiency 23.00% Customisable Yes Nos in series 3 panels in series Storage temperature -10ºc~+45ºc Peak power 21w Working temperature -20ºc~+65ºc Power tolerance ±3% Warranty 2 years Usb output 5v 2a Delivery time 25 days Dc5521 output 18v 1a Test conditions Am1.5 1000w/m² 25ºc