the number of solar cells.
A 12v solar panel has 36 photovoltaic cells. On the other hand, the 24V panel consists of twice as many solar cells or 72 cells.

Applicability.
The 12-volt panel is suitable for the small basic needs of small families. The 24-volt panel is used in large houses, apartments, offices, banks, hospitals, and so on.

Battery compatibility.
Usually, the solar panel 12v must be equipped with a 12V battery, and the 24V panel must be equipped with a 24V battery.

However, 24V batteries are not available on the market, so you can connect two 12V batteries in series.

Compatibility of Inverter.
12-volt solar panels must be paired with 12v inverters, while 24v solar panels must be paired with 24v inverters.

Charge controller compatibility.
The 12v charging controller must be used with the 12V panel. In contrast, the 24v charging controller is used with the 24v panel.

Here, please note that the rating of the solar panel must not be higher than that of the charging controller.

Expensive.
As a larger power module, 24v solar panels cost more than 12v solar panels.

Q1. What can I power from my 12v solar panel?
A 12V solar panel can supply the ideal amount of current to help charge smartphones, lightbulbs, RVs, and garden lights.

Q2. How long-lasting are the 12-volt solar panels?
If handled with good care, solar panels could easily last over 25 years.

Q3. What are the limitations of 12v solar panels?
Firstly, due to the low voltage of a 12v solar panel, it tends to lose a lot of heat over a long distance. Secondly, a 12v panel is only compatible with other 12v appliances or devices.

Most appliances, especially household appliances, operate on 12-volt or 24-volt power systems. Therefore, having two power systems working for you at the same time is an additional advantage. If this is not an option, understand the pros and cons of the two systems to help you choose between them.

24 volts: advantages.
Using a 24-volt power supply instead of a 12-volt power supply greatly reduces the cabling cost to nearly half of the original cost. The reason for this is that increasing the voltage of the system will result in a decrease in the current passing through it, thereby reducing the size of the wire you need. The reduction in the size of the wire reduces the cost, because the thicker the wire, the higher the cost. Another advantage of 24-volt power supplies is that they are more compatible with AC appliances. However, if you need a 12-volt power supply, you can easily reduce the voltage from 24 volts to 12 volts using a charging controller.

24 volts-shortcomings.
Although it is advantageous to use a 24-volt power supply, not all appliances run on this system. Some run on 12-volt systems, especially home systems such as telephone equipment. Only installing this system will mean that you cannot run an appliance running at 12 volts unless you use a voltage regulator or controller

12 volts-advantage.
When you plan to use the battery to run the appliance directly, use a 12-volt system. This is a safer voltage for the DC circuit than any higher operating voltage. Most appliances, especially household appliances, operate on 12-volt systems, making this voltage the most widely used, thus making 24-volt systems unnecessary and counterproductive.

12 volts-defect.
Although 12-volt systems are the most popular, they have a drawback: charge regulators cannot easily boost the voltage to a higher voltage because most of them can only work in reverse. Cabling systems are also expensive compared to higher-voltage systems.