What is the meaning of 12V in the product title，Why is this value different from the voltage of the solar panel？

When you open the product page, you will see a title like "xxx Watt 12 Volt Solar Panel". The "12V" here does not refer to the voltage of this solar panel (VOC or VMP), but to the fact that one xxxW solar panel is suitable for 12V system.

What does off-grid and on-grid mean ?

On-grid simply means solar power equipment (array or solar panel) is connected to the electrical grid, while off-grid refers to systems that are not connected to the grid and therefore store the generated power for later use.

Why is my solar panel under producing ?

Solar panel performance may be hindered for a number of reasons. Most commonly environmental conditions such as indirect sunlight, temperature rise, cloudy sky, and dirt and stain build up on the top glass will cause a reduced power output.

How many solar panels do I need ?

To determine solar panel needs, calculate the power load (Watts) and capacity (Watt-hours). Size the battery bank based on minimum capacity, then adjust panel quantity or power input accordingly.

What do I need to complete my off-grid solar power system ?

A solar panel must be connected to a charge controller to regulate current and to a battery to store power. You’ll need adapter kit cables to connect the panel(s) to the controller, plus tray cables to link the controller to a deep-cycle battery.

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Renogy Solar Panel 50 Watt 12 Volt, High-Efficiency 50W Solar Panel Monocrystalline PV Module Power Charger for RV Marine Rooftop Farm Battery and Other Off-Grid Applications

Renogy Solar Panel 50 Watt 12 Volt, High-Efficiency 50W Solar Panel Monocrystalline PV Module Power Charger for RV Marine Rooftop Farm Battery and Other Off-Grid Applications

Product ID: 220640984

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Details

Brand
Renogy
Material
Aluminium
Product Dimensions
58.2L x 50.8W
Item Weight
3.31 kg
Efficiency
High

⚡50W max power output

🌞95% efficiency at 5 years

🛡️IP65 weatherproof rating

Description

⚡ Harness the sun, power your freedom — wherever life takes you!

SHADE NO PROBLEM - Bypass diodes minimize power loss in low-light or shaded conditions, keeping you powered up.
PLUG PLAY VERSATILITY - Pre-drilled mounting holes compatible with multiple Renogy systems for quick, hassle-free installation.
EFFICIENT ENERGY CAPTURE - High-efficiency monocrystalline cells deliver maximum power in a compact, lightweight design.
POWER THAT LASTS DECADES - 25-year power output warranty ensures reliable energy for years to come.
BUILT TO BRAVE THE ELEMENTS - Corrosion-resistant aluminum frame and IP65-rated junction box for ultimate outdoor durability.

The Renogy 50 Watt 12 Volt Monocrystalline Solar Panel combines high-efficiency solar cells with rugged, weatherproof construction to deliver reliable off-grid power for RVs, marine, rooftop, and farm applications. With a 25-year power output warranty, corrosion-resistant frame, and smart design features like bypass diodes and pre-drilled mounting holes, it’s engineered for long-lasting, versatile performance in diverse environments.

Specifications

Brand	Renogy
Material	Aluminium
Product Dimensions	58.2L x 50.8W x 3H Centimeters
Item Weight	3.31 kg
Efficiency	High Efficiency
Included Components	Renogy 50 Watt 12 Volt Monocrystalline Solar Panel
AC Adapter Current	4.17 Amps
Maximum Voltage	12 Volts
Maximum Power	50 Watts
UPC	816360029533
Global Trade Identification Number	00816360029533
Manufacturer	Renogy
Item model number	Solar Panel 50 Watt
ASIN	B07GTH79JP

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