Do you want to increase the energy production of your solar panels without adding additional panels?
To select a solar charge controller, you need to know that there are two main types of controllers: PWM or Battery Charge Controllers for photovoltaic batteries with pulse-width modulated charge current and MPPT or Maximum Power Point Tracking - Maximum Power Point Tracking.
PWM - the simplest controllers simply disconnect the energy source (solar battery) when the voltage on the battery reaches approximately 14.4 V (for a battery with a nominal voltage of 12V). When the voltage on the battery drops to about 12.5-13 V, the solar battery is reconnected and the charge resumes. In this case, the maximum charge level of the battery is 60-70%. With regular undercharging, sulphation of the plates and a drastic reduction in the battery service life occur. Plus this scheme: simplicity, which means low cost. Minus: you can connect the battery, the voltage rating of which coincides with the battery voltage rating.
MPPT controllers are more complicated, more expensive, but have a huge advantage: solar panels can be connected in series, thereby increasing the voltage in the circuit to the controller and reducing current, which allows the use of thinner wires and reduces the loss of energy transfer to the controller. And the efficiency of such controllers is higher because they scan the currents at various voltages with a certain frequency and choose the maximum power point. Hence the name. Such a controller will in most cases increase the production of electricity. Those who wish to plunge into the world of technology can follow the link, where it is quite sensibly and detailed.
You can also read how to choose technical devices for a geothermal battery in our blog.
You can buy high-quality and inexpensive MPPT solar controllers in our online store.