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Shipping information
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Returns & warranty & contacting us
We want you to be completely satisfied with your Mestic purchase.
If your item arrives damaged or you change your mind, you can return it within 60 days of delivery in its original packaging for a refund or exchange.
All Mestic products come with a manufacturer’s warranty (typically 2 years) covering defects in materials and workmanship.
For return requests or warranty support, please contact our customer care team at onlinesales@mymestic.co.uk with your order number and a brief description of the issue.
With the Mestic Solar Charge Controller PWM MSC-2020 you connect your solar panel to the battery. By using a regulator you charge your battery safely and extend its life. The Mestic MSC-2020 regulator with PWM technology is very suitable for solar panels up to 300 W.
PWM charge controller solar panel
A charge controller adjusts the voltage level of the solar panel toward the voltage of the battery. This charges the battery safely and extends its life. This solar charge controller with PWM technology is suitable for charging a wet, gel, sealed and lithium batteries. The large LCD display allows you to easily view and set the operating status of the regulator and the battery charge level. You can also use the display to select multiple battery types. In addition, the solar charge controller is equipped with extensive electronic protection. This prevents overcharging, excessive discharge, short circuit, high voltage and reverse polarity connection. This allows you to generate green energy in a safe way!
Main benefits
Suitable for solar panels up to 300 W
Suitable for wet, gel, sealed and lithium batteries
Protected against: overload, excessive discharge, short circuit, high voltage and reverse polarity connection
Prolongs battery life
System voltage: 12 V / 24 V
Current: 20 A (charging)
Input voltage: 55 V
Advanced technologies
The PWM Solar charge controller MSC-2020 can handle 20 A of current and is compatible with a solar panel up to 300 W. The cost-efficient PWM controller MSC-2020 is suitable for smaller solar panels, which generate up to 300 W under ideal conditions. This is because the lower output is commensurate with the lower purchase price (compared to an MPPT charge controller). The Mestic PWM charge controller uses advanced techniques. Consider charging in three stages: bulk, boost and float. It keeps the battery in top condition thanks to the desulfation function én takes into account the characteristics and charge level of the battery. Also, the solar charge controller has a function that automatically compensates the battery temperature.
In short, the Mestic Solar Charge Controller PWM MSC-2020 connects your solar panel to the battery and ensures that it is safely charged. The charge controller thus extends the life of the battery. Suitable for solar panels up to 300 W.
Below is a quick guide to what each of these figures means in day-to-day use,
so you can judge whether this panel will comfortably support the way you camp.
Max power (W)
This is the peak wattage the panel can produce in strong sunlight.
A higher watt rating means more total energy over the course of the day,
so it’s easier to keep leisure batteries topped up when you’re running cool boxes,
pumps, lighting and multiple USB devices.
If you spend several nights off-grid or rely heavily on 12 V appliances,
prioritise panels with higher wattage for more reliable daily charging.
Max current (A)
Max current is the highest charging current the panel can deliver through a suitable
solar charge controller. The higher the amps, the faster your leisure battery can
recover after use, especially during shorter daylight windows.
This is particularly important for campers who arrive late on site, use a lot of
power in the evening or run Lithium batteries that can safely accept faster charging.
Max voltage (V)
Max voltage shows the panel’s operating voltage under load. Higher voltage helps
reduce losses over longer cable runs – for example on larger motorhomes or roof-rack
installations where the panel is some distance from the charge controller.
It also gives you a bit more headroom in cooler or cloudier conditions when panel
voltage naturally dips, helping the controller stay within its ideal working range.
How this affects your set-up
Together, these three values give a good picture of real-world performance:
max power tells you how much energy the panel can produce in a day, max current
shows how quickly it can recharge your battery, and max voltage indicates how
efficiently it will deliver that power through your wiring.
If you mostly stay on hook-up or only trickle-charge a battery between trips,
a lower output panel may be perfectly adequate. If you regularly camp off-grid,
run several 12 V appliances or depend on solar as your main charging source,
choosing higher outputs in all three areas will provide noticeably stronger, more
dependable performance.
