40W Monocrystalline Solar Panel PV Module for Home & Commercial Rooftop
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 roofs, and the low profile keeps added wind noise minimal.
Explore more from IPV ESSA
- Shop all Solar Panels
- 50W Monocrystalline Solar Panel PV Module (670×400×25mm)
- 60W Monocrystalline Solar Panel PV Module (760×430×25mm)
Frequently Asked Questions
What is a monocrystalline solar panel?
A panel built from single-crystal silicon cells, giving higher efficiency and a smaller footprint than polycrystalline types.
Do panels work on cloudy days?
Yes, at reduced output — typically 10–50% of clear-sky levels depending on how thick the cloud cover is.
How long do solar panels last?
Quality modules commonly retain most of their output for 20–25 years thanks to tempered glass and aluminium frames.
Can I connect panels to a battery?
Panels feed an MPPT charge controller or hybrid inverter, which safely charges the connected battery bank.
