40W Monocrystalline Solar Panel PV Module for Home & Commercial Rooftop

The jump to 40 W roughly doubles what the 20 W panel can sustain, which opens up loads like LED area lighting on its own battery, small ventilation fans, and continuous trickle charging for larger battery banks. Technical specifications Maximum Power (Pmax) 40 W Open Circuit Voltage (Voc) 21.84 V Short Circuit Current (Isc) 2.33 A Voltage at Pmax (Vmp) 18.2 V Current at Pmax (Imp) 2.2 A Module Efficiency 17.54 % Power Tolerance 0, +4.99W Maximum System Voltage 700 V DC Max Series Fuse Rating 10 A Module Type 182M04018 Solar Cells Mono crystalline 182*30.3mm (2*16Pcs) External Dimensions 570*400*25mm Weight 2.84 kg Front Glass 3.2 mm tempered glass Frame Aluminum Junction Box IP67 Output Cables Without cable Connector Without Compatible Mechanical Load Front Side Max. 5400Pa, Rear Side Max. 2400Pa Pmax Temperature Coefficient -0.350%/°C Voc Temperature Coefficient -0.270%/°C Isc Temperature Coefficient +0.048%/°C Package Dimensions 585*140*415mm Package Weight 15 kg Pieces per Package 5 Where it fits best LED area and security lighting with battery storage Ventilation fans for sheds, greenhouses and boats Maintaining larger 12 V battery banks in storage Questions buyers ask How long to charge a 12 V 20 Ah battery? From a moderate discharge, expect a full day of good sun with a controller. Charging time scales directly with how deeply the battery was discharged. Can I mount it on a vehicle roof? Yes. At 2.84 kg it is light enough for bracket or adhesive mounting on most vehicle Sold on IPV ESSA (https://ipvsolar.com/products/40w-570x400x25mm). The price shown is the retail price on that storefront on 2026-10-21, not a GreenB2B quote or a wholesale price.