Rich Solar 40 Amp MPPT Solar Charge Controller 1 / 10
RICH SOLAR

Rich Solar 40 Amp MPPT Solar Charge Controller Rich Solar 40 Amp MPPT Solar Charge Controller

SKU: RS-MPPT40

Brand RICH SOLAR In Stock
$159.99 In Stock
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Key features
  • Maximum Charging Current 40A
  • MPPT Tracking Efficiency >99%
  • Conversion Efficiency ≤98%
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Rich Solar 40 Amp MPPT Solar Charge Controller
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Optional extras
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Rich Solar BT-1 Module

Bluetooth Module for Solar Charge Controllers

$35.99
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Rich Solar Z-Brackets

Mounting Hardware Z-Brackets with Screws

$12.99
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Rich Solar Inline Fuse Holder

Waterproof Replacement Inline Fuse Holder

$15.99
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Rich Solar 40 Amp MPPT Solar Charge Controller

In Stock
Rich Solar 40 Amp MPPT Solar Charge Controller
Quantity$159.99 each
1
Rich Solar • MPPT Charge Controller

Rich Solar RS-MPPT40 40 Amp MPPT Solar Charge Controller

The Rich Solar RS-MPPT40 is a 40A MPPT solar charge controller built for RVs, vans, trailers, boats, cabins, sheds, and off-grid battery systems. With automatic 12V and 24V system detection, support for Sealed, Gel, Flooded, and Lithium batteries, high-efficiency MPPT charging, LCD system monitoring, load control, and built-in electronic protections, it gives medium-sized solar charging systems a smarter way to manage power from solar panels to batteries.

RS-MPPT40 controller 40A rated battery current 12V / 24V auto-detect Up to 99% MPPT tracking 98% peak conversion efficiency Lithium compatible
Rich Solar RS-MPPT40 40 Amp MPPT solar charge controller for RV, van, cabin, marine, and off-grid battery systems
40A Strong solar charging capacity for medium-sized RV, cabin, marine, and off-grid battery systems.
12V / 24V Automatically detects common 12V and 24V DC battery system voltages.
100VDC Supports solar input designs up to the listed maximum solar input voltage.
MPPT Tracks solar input efficiently to improve charging performance over basic controller setups.

Product Overview

The RS-MPPT40 is designed for customers who need more charging capacity than a small entry-level controller without jumping into a larger 60A setup. It regulates solar power from the panels to the battery, helping manage charging safely and efficiently for 12V and 24V battery banks.

This controller is a strong fit for RV solar upgrades, camper vans, travel trailers, boats, cabins, sheds, remote buildings, and DIY off-grid power systems where reliable MPPT charging, battery compatibility, and built-in protection are important.

Rich Solar 40A MPPT solar charge controller standing outdoors with LCD screen and LED indicators

Built for Medium-Sized Solar Charging Systems

The RS-MPPT40 is made for battery-based solar systems that need dependable MPPT charging, flexible battery compatibility, and useful system visibility. It is a practical controller for customers building or upgrading 12V and 24V solar charging systems.

RV & Travel Trailer Solar A strong controller option for roof-mounted solar arrays and battery banks used for camping, boondocking, or extended travel.
Cabins & Off-Grid Buildings Useful for remote buildings, sheds, tiny cabins, and off-grid systems that need reliable solar charging.
Marine & Boat Power Works for compatible marine battery systems where solar charging, battery protection, and system visibility matter.
12V & 24V Battery Banks Supports common low-voltage DC battery systems used in mobile, cabin, solar, and backup power applications.

Key Features That Matter

This description keeps the focus on what customers need to know before buying: supported system voltages, battery compatibility, MPPT efficiency, display visibility, protection features, heat dissipation, and Bluetooth-module communication support.

Rich Solar RS-MPPT40 charge controller front display with LCD screen and control buttons
Automatic 12V / 24V Detection

The controller automatically detects 12V or 24V DC system voltages, making setup easier for common RV, van, boat, cabin, and off-grid battery banks.

Rich Solar 40 Amp MPPT controller angled view with LCD and LED indicators
High-Efficiency MPPT Charging

Innovative MPPT technology helps track solar input efficiently, with tracking efficiency up to 99% and peak conversion efficiency of 98%. That helps the system harvest more usable charging power from connected solar panels.

Rich Solar RS-MPPT40 controller angled product view showing terminals and compact housing
Battery Compatibility & Load Control

The RS-MPPT40 is compatible with Sealed, Gel, Flooded, and Lithium deep-cycle batteries. It also supports diverse load control and can charge over-discharged lithium batteries when used within the correct system setup.

Rich Solar 40A MPPT charge controller with rugged black housing for heat dissipation and system protection
Heat Dissipation & System Protection

A die-cast aluminum design helps dissipate heat during operation. Built-in electronic protection helps guard against reverse polarity, overcharging, over-discharging, overload, short-circuiting, and reverse current.

System Monitoring Made Easier

The LCD screen and multiple LED indicators display system operation information, customizable parameters, and error codes. That makes it easier to see what the solar charging system is doing without relying on guesswork.

The built-in RS232 port can communicate with a BT-1 Bluetooth module, giving compatible systems an upgrade path for mobile monitoring when paired with the right accessory.

Rich Solar RS-MPPT40 40 Amp MPPT solar charge controller product angle with LCD screen and terminal icons

Best Uses

  • RV solar charging systems
  • Camper vans and travel trailers
  • Boat and marine solar battery systems
  • Cabins, sheds, and remote buildings
  • Off-grid solar battery banks
  • 12V and 24V DC system builds
  • Lithium, Sealed, Gel, and Flooded battery charging
  • DIY solar upgrades needing a reliable 40A MPPT controller

Key Benefits

  • 40A MPPT solar charge controller
  • Automatically detects 12V and 24V DC systems
  • Compatible with Sealed, Gel, Flooded, and Lithium batteries
  • MPPT tracking efficiency up to 99%
  • Peak charge conversion efficiency of 98%
  • LCD screen with multiple LED indicators
  • Displays operation information, parameters, and error codes
  • Electronic protection against reverse polarity and reverse current
  • Protection against overcharge, over-discharge, overload, and short circuits
  • Diverse load control capability
  • Can charge over-discharged lithium batteries
  • Die-cast aluminum design for heat dissipation
  • RS232 port for BT-1 Bluetooth module communication
Compatibility note: Before ordering, confirm your battery voltage, battery chemistry, solar array voltage, solar array wattage, controller current rating, PV input limits, wire sizing, fuse or breaker requirements, mounting location, ventilation, and whether the controller settings match your battery manufacturer’s charging requirements.

Size the charging system

Use our solar charge controller sizing guide to compare controller current and voltage limits. The MPPT versus PWM guide explains how MPPT and PWM designs differ.

Compare before you choose

Compare charge current, cold-corrected PV voltage and array-current limits against the battery system.

See the Rich Solar BRAVO 40 | 40 Amp MPPT Solar Charge Controller | Premium 40A 12V/24V MPPT Solar Controller for RVs, Trailers, Campers, Vans, Boats, Off-Grid for another RICH SOLAR charge controller option.

Rich Solar 40 Amp MPPT Solar Charge Controller
Package Includes
1x Rich Solar 40 Amp MPPT Solar Charge Controller
Includes the selected item based on the current package option.
Specifications
Selected variant SKU RS-MPPT40
Rated Battery Current 40A
Rated Load Current 20A
Max. PV Input Short Current 50A
Max. Battery Voltage 32V
Max Solar Input Voltage 100VDC
Charge Circuit Voltage Drop ≤0.26V
Discharge Circuit Voltage Drop ≤0.15V
Working Temperature -31°F to +113°F
Max Terminal Size 8AWG
Overall Dimensions 9.37 x 6.81 x 2.85 in
Net Weight 4.41 lb
100V Max Solar Input Voltage Supports flexible solar panel configurations.
Supports Multiple Battery Types Compatible with Sealed, Gel, Flooded, and Lithium batteries.
Bluetooth Ready Supports the optional BT-1 Bluetooth module via the RS232 communication port for wireless monitoring.
Lithium Battery Recovery Capable of charging over-discharged lithium batteries.
Designed for Long-Term Reliability Durable construction for reliable performance in demanding off-grid applications
Nominal System Voltage 12V/24V Auto
Maximum Charging Current 40A
Maximum Recommended PV Input Power 550W (12V) / 1100W (24V)
Maximum Solar Input Voltage 100V (25°C), 90V (-25°C)
Maximum PV Input Short Current 50A
Maximum Battery Voltage 32V
Battery Voltage Range 9V to 35V
MPPT Tracking Efficiency >99%
Conversion Efficiency ≤98%
Battery Compatibility Sealed, Gel, Flooded, Lithium
Communication RS232 (Optional BT-1 Bluetooth Module)
Protection Rating IP32
Maximum Terminal Size 8 AWG
Dimensions (L × W × H) 9.37 × 6.81 × 2.85 in
Package Dimensions 12 × 9 × 6 in
Gross Weight 6 lb
Rated Charging Current 40A
📘
User Manual
Installation instructions, setup guidance, operation, and troubleshooting.
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📄
Specification Sheet
Technical specifications, dimensions, electrical ratings, and certifications.
View PDF
📘
User Manual
Installation instructions, setup guidance, operation, and troubleshooting.
View PDF

Frequently Asked Questions

Clear answers to common questions about this product, setup, compatibility, and use.

What panel-array limits must be checked before connecting the 40 Amp MPPT Solar Charge Controller? The official limits list published PV voltage limit or range 100VDC. Check the final series-parallel array against voltage, current, and power simultaneously, including open-circuit voltage in the lowest expected temperature. A panel layout can fit the wattage recommendation and still exceed the controller's voltage or current limit. What tradeoff comes with using MPPT regulation in the 40 Amp MPPT Solar Charge Controller? This is an MPPT controller, so it can track the array's operating point and convert available PV voltage into battery-charging power within its published limits. That does not make every high-voltage string compatible: the array must remain inside the controller's input and tracking ranges. What battery profile must be confirmed before using the 40 Amp MPPT Solar Charge Controller? The published system-voltage information is Automatically detects 12V or 24V. RICH SOLAR lists: Compatible with various deep cycle battery options: Sealed, Gel, Flooded, and Lithium.. Confirm the selected profile, charge voltages, temperature behavior, BMS limits, and equalization rules against the exact battery manufacturer. A chemistry name by itself is not enough to approve the settings. Will the 40 Amp MPPT Solar Charge Controller deliver its full rated charging current throughout the day? 40A is the published charging or controller-current figure, not a guaranteed all-day output. Actual battery current depends on usable panel power, sunlight, array voltage, battery voltage, charging stage, battery acceptance, temperature, wiring loss, and any loads consuming solar energy while charging. Will the 40 Amp MPPT Solar Charge Controller need a BT-1 or another add-on for phone data? Bluetooth is not listed as built in. The official page identifies communication through the optional BT-1 Bluetooth module, so include that accessory if phone monitoring is required. A communications port alone does not put the controller online.