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Description
SR-ML2440 MPPT SOLAR CONTROLLERMPPT High Efficiency, Solar Charge Controller, 40A(550W 12V, 1100W 24V), 12V 24V Autoswitch, Maximum input voltage: 100V. Overview Features With the advanced dual peak or multi peak tracking technology, when the solar panel is shadowed or part of the panel fails resulting in multiple peaks on the I V curve, the controller is still able to accurately track the maximum power point. A built in maximum power point tracking algorithm can significantly
MPPT High Efficiency, Solar Charge Controller, 40A(550W/12V, 1100W/24V), 12V/24V Autoswitch, Maximum input voltage:100V.
Overview
Features
- With the advanced dual-peak or multi-peak tracking technology, when the solar panel is shadowed or part of the panel fails resulting in multiple peaks on the I-V curve, the controller is still able to accurately track the maximum power point.
- A built-in maximum power point tracking algorithm can significantly improve the energy utilization efficiency of photovoltaic systems, and raise the charging efficiency by 15% to 20% compared with the conventional PWM method.
- A combination of multiple tracking algorithms enables accurate tracking of the optimum working point on the I-V curve in an extremely short time.
- The product boasts an optimum MPPT tracking efficiency of up to 99.9%.
- Advanced digital power supply technologies raise the circuit's energy conversion efficiency to as high as 98%.
- Charging program options are available for different types of batteries including gel batteries, sealed batteries, open batteries, lithium batteries, etc.
- The controller features a limited current charging mode. When the solar panel power exceeds a certain level and the charging current is larger than the rated current, the controller will automatically lower the charging power and bring the charging current to the rated level.
- Instantaneous large current startup of capacitive loads is supported.
- Automatic recognition of battery voltage is supported.
- LED fault indicators and an LCD screen which can display abnormality information help users to quickly identify system faults.
- Historical data storage function is available, and data can be stored for up to a year.
- The controller is equipped with an LCD screen with which users can not only check device operating data and statuses, but also modify controller parameters.
- The controller supports standard Modbus protocol, fulfilling the communication needs of various occasions.
- The controller employs a built-in over-temperature protection mechanism. When temperature surpasses the set value, the charging current will decline in linear proportion to the temperature so as to curb the temperature rise of the controller, effectively keeping the controller from being damaged by overheat.
- Featuring a temperature compensation function, the controller can automatically adjust charging and discharging parameters in order to extend the battery's service life.
- TVS lighting protection
Specification
Downloads
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Brought me back
Format: Kindle
Brought me back to understanding a deep knowing that has been there since I was a young child but couldn't understand what it was.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 19, 2025
★★★★★ 5
This is a must-read for all those who are seeking answers.
Format: Paperback
If you can read only one of Robert Monroe's 3 books ("Journeys Out of the Body," "Far Journeys" and "Ultimate Journey"), "Ultimate Journey" is the one to read. Monroe's books chronicle his amazing learning experiences as his ability to travel out of the body develops and his capability to remember and to put these odysseys into words increases. Without laboring over material covered in the first two books, Monroe sums up his earlier adventures and then writes about his most recent and significant discoveries on this, his spiritual journey to understanding.
If you have ever wondered if there is a God, why the Bible says that God is Love and in another place, shows God to be a vengeful being who orders the killing of many people, "Ultimate Journey" and the lessons taught to Monroe in his out-of-body state will help to clear up these questions. To say that "Ultimate Journey" will give you a whole new perspective on life, death and what lies beyond is an understatement. This is a must-read for those who are seeking answers!
And, if at all possible, read all 3 books in order. "Far Journeys" is definately the most difficult to read, since much of it reflects Monroe's efforts to translate non-verbal communications from non-humans into English. But the information in that book is voluminous and well worth the effort to read it. Happy reading, fellow seekers!
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Reviewed in the United States on December 16, 2012
★★★★★ 5
YOU can actually LEARN to do this!
Format: Paperback
"Eavesdropping on Animals” by George Bumann really was a welcome break for me as I spend so much time outside in Nature. George is also amazing at being able to read Nature in a way I had never seen before. His insight via really listening & paying attention to everything around him, is so precise - he can literally know where animals are without seeing them. I got this book mainly because HE wrote it & I knew it would be interesting. The thing that surprised me was he actually teaches you how to do what he does (ie: know exactly where a wolf pack is traveling by hearing a certain coyote call & knowing the terrain). I started simply by really paying attention to all of the bird songs going on outside my window very early each morning & could finally hear ones that were repetitively there & was able to figure out what they meant by getting outside & sitting on my patio as I drank my tea. If you LOVE NATURE, you would so get into this book. It’s a great teaching guide, plus his stories are so cool! Entertaining & informative to read.
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Reviewed in the United States on November 30, 2025
★★★★★ 5
Will forever change your experiences in nature!
Format: Hardcover
I am an instructor in animal language in the wildlife ecology department at two leading universities and I can attest that George is an expert animal whisperer/linguist. I've had the pleasure of knowing him and hearing his stories, and this book is an outstanding gateway into understanding the behavior of animals. It will reveal a whole new world to you every time you step outside, whether you live in an urban area or next to a wilderness.
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Reviewed in the United States on December 2, 2025
★★★★★ 5
Love this book!
Format: Hardcover
If you love nature- this is a must! If you aren’t a nature person - you’ll feel like one! Must read!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 6, 2025
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