RS Pro 20W Monocrystalline solar panel £8.46 - £50.76 delivered rs-online.com (Back Orders Only Now)
RS Pro 20W Monocrystalline solar panel £8.46 - £50.76 delivered rs-online.com  (Back Orders Only Now)

RS Pro 20W Monocrystalline solar panel £8.46 - £50.76 delivered rs-online.com (Back Orders Only Now)

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Ideal for putting on Shed, Log-Cabin etc.

These come in pack of 5 so £42.80 plus VAT.

Not sure if these are Miss-priced, though 30w are £55.59 each on RS Website...

Product Details

RS 20wp Solar Panel Kit Bulk Pack

The 20wp Solar Panel Kit is ideal for use in caravans where the time spent away from a mains hook up is no more than 4 days. Also useful for charging consumer appliances such as mobile phones, electric toothbrushes, digital cameras, powering electric gates, garden pond pumps or TV’s.

The 20 watt panel provides a continuous trickle feed maintaining and extending the life of any 12 volt battery

High efficiency crystalline cell for “all weather” charging

Perfect for powering colour pond pumps / fountains* and for use in larger caravans over a week’s period

Water resistant, robust construction for outdoor use.

20 year cell warranty and 10 year module warranty***

The 10Ah (STCC10) (RS 905-4532) Charge controller (sold separately) should be used with this kit to protect the battery from being overcharged and to prevent reverse current drain


* An inverter is required to power or charge 240Vac appliances - not included (RS 905-4532)

***Cell performance warranty states that at 20 years the cell output will be no less than 80% of new performance values – i.e the cell degradation rate will be no greater than 20% in 20 years

Solar Panels - Chargers

Solar Panels and Chargers

Solar “photovoltaic” panels use the power of the sun to generate electricity and can be used in a variety of applications from calculators to homes. They are most effective, versatile and cost saving in many commercial and leisure applications for charging 12/24V batteries.

Solar panels provide power through batteries at off grid and isolated locations and are widely used in critical telecommunications and telemetry applications. Solar panels enable rapid installation of equipment at remote sites, either temporary or permanent, avoiding the costs and inconvenience of grid connection. They are designed for very low maintenance and longevity.

How Much power?

The daily power production of a solar panel can be calculated by multiplying the panel’s peak power rating by between 0.5 and 6 depending on the time of year, angle and location. For example; an 80Watt solar panel produces a peak current of 4.55A.

In summer, placed flat it can produce between 20 - 27Ah per day. In winter, at 60° angle South facing it can produce between 4.55-9.1Ah per day.

Solar Installation

Solar panels are usually installed at a 55-65° angle for optimal wintertime performance. For a year round power supply solar panels can be combined with Windchargers.

Solar panels can be connected in parallel to increase power and in series to increase voltage.

To complete the system deep cycle batteries, a voltage regulator and electrical cables are required to get up and running. A range of convenient mounting kits are available for pole or wall mounting

Grid Connect Kits:

Solar Energy Kits to supply grid connected electricity, offsetting electricity used are available through Product Plus. These roof mount type systems start at less than 8 square metres for 1kW.


£50.76 delivered - your headline really ought to state that figure, plus it seems there is only 1 pack in stock.

Original Poster

Yes 1st Post will change :-) I'm sure you can get them on Back-Order

Back order for despatch 17/10/2016 If you can wait for them

Edited by: "crookface" 8th Sep 2016

Don't forget a charge controller in between panels and your 12v battery to prevent over voltage / over charging. RS provide a link to their 10a controller at £28 but they can be bought much cheaper on the biggest auction site. search for
"10/20A 12V/24V LCD Solar Controller Regulator Charge Battery LED Lighting"
Edited by: "wirdy" 8th Sep 2016

Original Poster

Yes I got mine from "Said" Site, though not set it all up yet, plus have 5 which I can join together. Will need some MC4 leads as None come out of the Panel, though with a bit a research could be a good investment for Garden Lights etc. Or keep one and sell the rest for £20 each on "Said" Site

I have a couple of cheap eBay charge controllers, go for one with an lcd screen rather than led's as they use less power plus you can monitor voltage and load easier. A 20w panel will maintain a fully charged battery with a few hours direct sunlight per day with occasion use of the battery at low loads, I have a 20w panel in the garden maintaining a 75ah battery and use it to recharge powerbanks, other batteries, phones, iPads etc and voltage never drops below 13v.

Original Poster

Yes Freakstyler easy to set up with a bit of research... Could power the Shed, Garden Lights everything you said with just one of these, can attach a 12v Battery as well to store the Energy.

Only Available on Back-Order now... Might be worth the Wait though

And they finally shipped the 15 panels I ordered!! Cheers OP!
Edited by: "samcatch" 8th Nov 2016

Also picked up my pack of 5 today - I'd all but given up on them... Cheers OP!
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