SRNE 40A MPPT Charge Controller
SRNE 40A MPPT Charge Controller
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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
Model: ML2440
System voltage: 12V/24V Auto
No-load loss
0.7 W to 1.2W
Battery voltage: 9 to 35
Max. solar input voltage: 100V (25°C), 90V (-25°C)
Max. power point voltage range
Battery voltage +2V to 75V
Rated charging current: 40A
Max. capacitive load capacity: 10000uF
Max. photovoltaic system input power: 550W/ 12V or 1100W/ 24V
Conversion efficiency: ≤ 98%
MPPT tracking efficiency: > 99%
Temperature compensation factor: -3.0mv/ °C/ 2V (default)
Operating temperature: -35°C to +45℃
Protection degree: IP32
Weight: 1.4kg
Communication method: RS232
Altitude: ≤ 3000m
Product dimensions: 210*151*59.5mm
238*173*72.5
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I almost NEVER leave a 5 star review. They are reserved in my world for places that do something EXCEPTIONAL. Kyle A. And the crew at Cabin Depot are a group of those exceptional people. They patiently worked with us as we developed our off grid setup and provided not only fair prices, but wonderful follow-up with my installation and operational questions as our system came together. Thank you and we look forward to a continued relationship.
I purchased a drolet myriad III wood stove from cabin depot. Customer service was great, delivery was fast and they replied to all of my questions very quickly. When I received the wood stove I unboxed it while the driver was here (as suggested by the company). Everything was perfect and the driver from midland transportation was very accommodating.
A+ thank you very much!
I’ve taught customer service to many organizations in my professional career. I’m now long retired and still find excellent customer service difficult to come by!
The Cabin Depot, and especially Kyle Aubin, are exceptional examples of customer support and service!! My only regret was not reaching out sooner!
I would have saved myself significant time, lessened aggravation, and a happier installation of my EG46000XP and generator backup.
Lyle’s patience and response time, his pleasantness and professionalism, will contribute significantly to me looking first to them for future sales and service!
Recently added a EG4 LL battery to my existing system.
Cabin Depot was great to deal with, shipping was around a week., which is pretty good considering it was shipped across Canada.
Only delayed by 1 day but that was a UPS thing.
This battery was added to 3 existing EG4 Lifepower batteries.
Everything worked no issues at all., only thing was the communication ports are in different locations and the supplied cables are too short to reach,
No big deal.
All in all very happy and would order again
Propane stove came on time in perfect condition, super easy install, helpful customer service, very competitive price!! Just a good company. We will be buying more off grid supplies from this fantastic group of professionals!!
I was so impressed last year when I called from Alberta - searching for the right equipment (hot water on demand and propane heater… and I have to say I am impressed again - today was just a special order thermocouple to have as a spare - the service you provided for a 35 dollar part was above and beyond.

