Description
Mastervolt SCM40 PWM Charge Controller | Boat Supply Store
For marine and RV applications demanding robust solar power management, this 40A PWM charge controller ensures efficient energy capture from substantial solar arrays, supporting up to 3600 Wp. It offers broad battery compatibility, including advanced Mastervolt Lithium Ion chemistries, alongside standard AGM, gel, and wet types, optimizing charging cycles with an integrated battery temperature sensor. The unit automatically detects 12V and 24V systems, providing reliable off-grid power for extended voyages or remote excursions.
Key Features
- High efficiency charging across various battery types.
- Supports extensive solar panel configurations up to 3600 Wp.
- Broad battery compatibility with AGM, gel, wet, and Mastervolt Lithium Ion.
- Fast and flexible battery type setting for optimal charging profiles.
- Integrated battery temperature sensor extends battery lifespan.
- Automatic 12V and 24V system detection simplifies installation.
- Switchable output with a maximum 40A current capacity.
- Noiseless operation for undisturbed onboard environments.
Specifications
| Product Specifications | |
|---|---|
| Charge Controller Type | PWM |
| Max Charge Current | 40A |
| System Voltage | 12/24V (Automatic Detection) |
| Max Solar PV Input Power (24V) | 3600 Wp |
| Battery Types Supported | AGM, Gel, Wet, Mastervolt Lithium Ion |
| Battery Temperature Sensor | Included |
| Output | Switchable |
| Maximum Output Current | 40A |
| Display | LCD |
| Nighttime Energy Consumption | 4 mA |
| Communication | PC-Link (optional) |
| Protection | Overtemperature, overload, voltage fluctuations, short circuit, reverse polarity |
Who This Is For
Boaters and RV owners with solar power systems needing a reliable, high-efficiency charge controller capable of handling large solar arrays and diverse battery types, including advanced lithium-ion chemistries. This unit is ideal for those seeking a robust, safe, and user-friendly charging solution for their off-grid power requirements.
How It Compares
| Feature | Mastervolt SCM40 PWM Charge Controller | Competitor |
|---|---|---|
| Technology | PWM | MPPT, MPPT |
| Max Charge Current | 40A | 50A, 40A |
| Max Solar PV Input Power (24V) | 3600 Wp | 1400W, 1040W |
| Battery Types Supported | AGM, gel, wet, Lithium Ion | Lead-acid, Lithium Ion, Lithium, LiFePO4, AGM, Gel, Flooded |
| Battery Temperature Sensor | Yes | Yes (requires external sensor), Yes |
| Display | LCD | None (requires app/external), LCD |
| Communication | PC-Link (optional) | Bluetooth built-in, VE.Direct, USB |
Common Concerns Answered
Is PWM technology the best choice for variable sunlight conditions?
While PWM technology is highly effective, MPPT controllers generally offer superior efficiency in low-light or rapidly fluctuating solar conditions. For consistent, strong sunlight, PWM provides reliable and robust charging.
Do I need to purchase additional accessories for advanced monitoring?
The SCM40 PWM includes an LCD display for essential monitoring. For advanced data logging and remote management, the PC-Link communication requires an optional cable and software purchase.
Does the LCD provide detailed battery status?
The LCD display offers key information regarding battery state of charge and system status. For in-depth analysis and parameter adjustments, connecting to a PC via the optional PC-Link interface is recommended.
Frequently Asked Questions
What battery types can the Mastervolt SCM40 PWM charge?
The Mastervolt SCM40 PWM is compatible with AGM, gel, wet, and Mastervolt Lithium Ion batteries.
What is the maximum solar panel capacity supported by the SCM40 PWM?
The SCM40 PWM supports solar panel configurations up to 3600 Wp.
Does the SCM40 PWM have a battery temperature sensor?
Yes, the SCM40 PWM includes a battery temperature sensor to optimize charging and extend battery lifespan.
Can the SCM40 PWM automatically detect 12V and 24V systems?
Yes, the SCM40 PWM features automatic detection for both 12V and 24V battery systems.
What is the energy consumption of the SCM40 PWM at night?
The nighttime energy consumption of the SCM40 PWM is minimal, rated at 4 mA.
