I have a 300w grid tie invertor, can this (or 3 of them) connect directly to it?

Yes it can, connect three of these in parallel and your grid tie inverter would need to accept 12V panels which can output up to 18V.

The quoted optimum quoted is 2.71a for 50W panel, but what should I expect on a sunny and cloudy day?

Most of the time these ratings are based on 1000W/m^2 sun output. This is typically only achievable in hot places like near the equator. There are calculators online to calculate panel efficiency based on your geographical location and the time of year.

Which cable connecting kit do i need for 3 of these please anyone??

You do get a 3 connection to one cable on here. It will take 3 leads for 3 solar panels 12v down to one 12v cable and in to your inverter or usb converter

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Renogy 50 Watt Solar Panel 12 Volt Monocrystalline Module PV Charger for Motorhome, Garden, Boat, Caravan and Off-Grid Applications

Renogy 50 Watt Solar Panel 12 Volt Monocrystalline Module PV Charger for Motorhome, Garden, Boat, Caravan and Off-Grid Applications

Product ID: 149342235

Details

Brand
Renogy
Efficiency
High
Item weight
3.5 kg
Material
Silicon
Product dimensions
126.2L x 76.4W

⚡50W max power output

🔋25-year power output warranty

🌬️Withstands 2400Pa wind & 5400Pa snow loads

€ 124.94

Duties & taxes included

In stock

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Description

☀️ Harness the sun, own your adventure — power that keeps up with your lifestyle!

PLUG PLAY READY - Pre-drilled mounting holes and MC4 connectors make installation effortless and secure
SHADE NO PROBLEM - Bypass diodes optimize performance even in low-light or shaded conditions
POWER YOUR FREEDOM - 50 Watts of clean, reliable energy for your off-grid lifestyle
LONG TERM PEACE OF MIND - Backed by a 25-year power output warranty to keep you powered for decades
BUILT TO BRAVE THE ELEMENTS - Durable aluminum frame and impact-resistant glass stand strong against wind, snow, and corrosion

The Renogy 50 Watt Monocrystalline Solar Panel delivers efficient 12V power with advanced encapsulation and bypass diode technology for superior low-light performance. Engineered with a corrosion-resistant aluminum frame and impact-resistant glass, it withstands harsh weather including high winds and heavy snow loads. Installation is streamlined with pre-drilled holes and MC4 connectors, making it ideal for motorhomes, boats, caravans, and off-grid setups. Supported by a robust 25-year power output warranty, this panel ensures reliable, long-lasting solar energy wherever your journey takes you.

Specifications

ASIN	B07HR6KDW1
Amperage Capacity	2.9 Amps
Best Sellers Rank	2,869 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 14 in Monocrystalline Solar Panels
Brand	Renogy
Connector Type	MC4
Country of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (248)
Efficiency	High Efficiency
Global Trade Identification Number	00810081408783
Included Components	1X 50W Solar Panel
Item Dimensions L x W x H	126.2L x 76.4W x 3H centimetres
Item Weight	3.5 kg
Manufacturer	Renogy
Material	Monocrystalline Silicon
Maximum Power	50 Watts
Maximum Voltage	12 Volts
Model Number	RNG-KIT
Number of Items	1
Number of Packs	1
Output Voltage	12 Volts (DC)
Part Number	RNG-50D-SS
Special Features	Advanced encapsulation material with multilayer sheet lamination, bypass diodes
Unit Count	1.0 count
Upper Temperature Rating	85 Degrees Celsius

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Good experience, but the tracking updates could be better.

2 months ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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