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...
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 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.