THE SOLAR PANELS: MONO OR POLY?
WattMobile panels are made of polycrystalline and monocrystalline cells known for their high yields. They are also equipped with a diode device to reduce losses due to shadings. This type of solar panel is most effective for mobile installations such as RVs, boats and outdoors activities.
The polycrystalline cells commonly called “Poly ” : Offer the best return on investment and a very close performance, while sometimes superior, to the monocrystalline cells .
The monocrystalline cells commonly called ” Mono” : Use to maximize performance in tight spaces or to minimize weight and for our portable sets.
Thin-film Sillicon : Do not offer sufficient returns in capacity due to the limited space available on your mobile installations. Its use is rather recommended for cottages in forested areas or for solar installations with poor orientation with regards to the sun.
THE CHARGE CONTROLER: MPPT OR PWM?
If you have done some research on solar energy you probably heard of a charge controller model that provides great results. The MPPT charge controller increases the charge transferred by 10 to 30%.
The difference is obtained by the conversion of the energy transferred to the battery bank. For example, let’s take a 90-watt panel with a voltage of 18 volts plugged to a 12-volt battery bank. This panel will produce a maximum current of 5 amps The conventional (PWM) controller will transfer a 5-amp charge to the battery (if the battery bank is not full).
Instead the MPPT controller will converts the 18-volt voltage into 12-volt: 18V/12V = 1.5 times. That means that a charge equivalent to 7.5-amp (5-amp X 1.5) will get transferred to the battery bank.
In this example, we see that 50% more charge is transferred to the battery bank. In reality, you will see an increase of 10 to 30% in the charge transferred by a MPPT charge controller.
THE INVERTER: PURE SINE OR MODIFIED WAVE? WHAT POWER LEVEL?
Pure Sine or modified wave: A pure sine wave inveter converts the 12V-DC from the battery bank into a identical current to the grid. The waves are identicals and the regular rhythm. A modified wave inverter produces current good to power the devices, but the wave is not like the current on the grid. You should avoid using a modified wave inverter with medical and good quality electronic devices to avoid damaging them.
Power: To determine the power you require you must add the consumption of all the devices that you plan to use at the same time. We also recommend not using the inverter to is full capacity for a long period of time. Just like a car that you will run at high RPM, you will damage it. For example, if you plan to use your microwave ,you require a minimum of 1500-watt inverter, but a 2000-watt inverter will allow you to use other small devices at the same time.