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20W Solar Panel Review

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20 Watt Solar Panel Review

The AKT-20-M AKT Solar Panel is an excellent panel for people with motor homes, caravans or boats looking for a cheap and simple way to power their appliances or to charge their 12 volt batteries. This 12 volt, 20 watt solar panel is also water resistant and sealed against the elements making it ideal for use in the garden to provide free solar power to power garden lights, pond pumps, as well as garden sheds and log cabin lights not connected to the utility grid.

20W AKT Solar Panel Rating
  • 1. Cost per Watt:

    4 star rating

  • 2. Quality of Construction:

    5 star rating

  • 3. Weight of Panel:

    5 star rating

  • 4. Rated Lifetime:

    5 star rating

  • 5. Value for Money:

    4 star rating

Overall Rating Score: 23/25

What makes this 20W Solar Panel perfect for home use is that it is made using 36 long-lasting, high-efficiency, monocrystalline photovoltaic cells designed to give 20 watts of free solar power over a 25 years period. In addition, this 20W AKT Solar Panel comes complete with its own waterproof connection box and 1.8m of flexible cable allowing you to connect it with other solar panels to create higher voltage systems.

This panel is one of AKT Solar’s range of top-quality solar panels available which challenges the current solar market by bringing some of the highest solar panel efficiencies in the marketplace, all at affordable prices. You will find this 20 watt, 12 volt AKT solar panel on sale at Amazon.

Solar Panel Characteristics:

  • – 36 (4×9) Monocrystalline Solar Cells
  • – Peak Power (Wp): 20W ± 5%
  • – Voltage at maximum power (Vmp): 17.5V
  • – Current at maximum power (Imp): 1.14A
  • – Open circuit voltage (Voc): 21.0V
  • – Short circuit current (Isc): 1.23A
  • – Power allowance range: ± 5%
  • – Dimensions: 330 x 550 x 25mm
  • – Weight: 3.7kg

This voltage optimised 20 watt solar panel is ideal for use in 12V off-grid systems and charging 12V batteries. It’s rigid anodised aluminium frame and toughened tempered glass prevent damage due to frost, snow, hail and high winds giving it a design life of over 20 years of consistent free power.

The 20W AKT Solar Panel can be fitted with a bypass diode making it perfect for placing in series with other panels to create higher voltage systems. However, as standard it does not have a blocking diode fitted and so should not be left connected to a battery overnight as it will allow charge to escape from your battery.

Let’s take a look at some of the AKT-20-M solar panels features:

The Panels Good Points:

  • Top of the range 20 Watt AKT Solar Panel with excellent performance even in low-light conditions.
  • Made from 36 (4×9) high performance, high efficiency monocrystalline solar cells.
  • 3.2mm tempered glass and rigid anodised aluminium alloy frame for exceptional strength.
  • Voltage optimised for use in 12V systems and charging 12V batteries.
  • Weatherproof and durable, perfect for permanent outdoor use on a boat, motor home, or in a garden.
  • Lightweight, portable and complete with 1.8 metres of flexible cable.

The Panels Bad Points:

  • Only 20 watts of solar power available.
  • High cost per solar watt compared to others.
  • Requires additional solar charge controller.
  • Requires additional blocking diode for battery charging.

This 20 watt solar panel is currently for sale at Amazon.

This high quality waterproof 20 watt AKT solar panel is ideal for people who want to save money on their electricity bills and the environment, or were it would cost too much to install electrical cables to a shed or outhouse. This solar panel is powerful and portable enough to be used to power hundreds of devices that you may use in a shed, boat or caravan such as lights and pumps and can still generate free renewable solar power on a cloudy day.

Due to its rigid anodised aluminium alloy frame and 3.2mm thick tempered glass giving it exceptional strength, it is perfect for permanent outdoor use in the garden to provide free power either directly, such as powering a pond fountain or pump, or for keeping your car, caravan, boat or motorbike battery topped up around the clock.

Connecting 20 Watt Panels Together

These 20 Watt Solar Photovoltaic Panels can be connected together with other solar panels to form larger arrays to generate higher voltages or greater battery charging currents. The following table gives you an idea of what is possible with this small but versatile 20W panel.

Panel Type:AKT-20-M Solar Panel
Panel Rating: 20W (1.14A at 17.5V) Panel Dimensions: 330 x 550 x 25mm
System Power Panel Qty Controller Type Minimum Array Area
40 Watts 2
EP Solar 10A
0.36 m2
60 Watts 3 0.54 m2
80 Watts 4 0.73 m2
100 Watts 5 0.91 m2
120 Watts 6 1.09 m2
160 Watts 8 1.45 m2
200 Watts 10 1.82 m2
240 Watts 12 2.18 m2

Note that this 20 watt solar panel can be connected together in either a series, parallel or a combination of both to give a higher output voltage or charging current from the array than a single panel.

For example, 4-off these 20 watt solar photovoltaic panels panels connected in series would give maximum operating voltage 70 volts (4 x 17.5) at 1.14 amps ( Vmp x Imp = 70 x 1.14 = 80W ). Likewise, four of these AKT-20-M solar panels connected together in parallel would give 17.5 volts at 4.56 amps ( Vmp x Imp = 17.5 x 4.56 = 80W ).

For off-grid battery charging applications, this 10A Solar Charge Controller is a good choice. This powerful dual voltage (12V or 24V), 10A charge controller which uses PWM (Pulse Width Modulation) technology to extend the life of connected batteries and can work with sealed, gel and flooded batteries.

Other features of this 10A Charge Controller include LCD display, USB charging sockets, LED indicators and friendly interface with 4 multifunctional buttons. The controller also allows you to set battery capacity, automatic cut off to prevent over-charging and deep discharge, over heating, over load, short circuit and reverse polarity protection of the connected batteries.

The 20W solar panel can be used to charge batteries directly, but you may also be interested in this powerful 10 Amp solar charge controller by EP Solar which is designed to protect batteries whilst charging them. This high quality, brand new powerful 10 Ampere, 12 volt controller accepts a wide range of input voltages from various solar array configurations making it suitable for off-grid and on-grid modules like the 20W AKT Solar Panel as well as many other solar panels up to 160 Watts.

When used to charge an off-grid backup battery system up to 36 volts, the VS1024N controller uses PWM (Pulse Width Modulation) technology which increases charge acceptance and prolongs the life of the batteries. Often the PWM technology can recover some lost battery capacity too giving full control via its built in display to a range of parameters and setting for a variety of battery load conditions. This 10A charge controller also includes a full set of electronic protection functions such as reverse current, over charging, discharge, over heating, short circuit, reverse polarity, etc. protecting both your solar panel and the load.

The AKT Solar and CE logos assures the build and quality of the panel, so for more information, customer reviews about this 20W AKT solar panel, Click Here to visit Amazon, you won’t find it cheaper anywhere else. Free shipping with Amazon Prime is included.

1 Comment » for 20W AKT Solar Panel
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