The BougeRV 40A MPPT Solar Charge Controller 12V/24V/36V/48V Runs 12V to 48V Battery Banks From Up to 2400W of Solar With App Monitoring
The BougeRV 40A MPPT Solar Charge Controller 12V/24V/36V/48V charges 12V, 24V, 36V or 48V batteries at up to 40A. It accepts up to 150V of PV input and up to 2400W of solar on a 48V system.
It's made for RV solar, overlanding, golf cart and off-grid cabin setups that may grow over time. The negative-ground controller works with lithium and lead-acid batteries, has a backlit display with PV, BATT and FAULT lights, and connects to the ChargePro 2.0 app over Bluetooth.
BougeRV 40A MPPT Solar Charge Controller 12V/24V/36V/48V Features
Four System Voltages in One Controller
The controller supports 12V, 24V, 36V and 48V battery systems. Maximum solar input is 600W at 12V, 1200W at 24V, 1800W at 36V and 2400W at 48V, so you can add panels as your system grows.
Efficient MPPT Tracking
BougeRV rates MPPT tracking efficiency above 99% and conversion efficiency above 98%.
Lead-Acid and Lithium Battery Modes
Choose FLD, SEL (sealed lead acid, which covers SLD and AGM), GEL, LI or USER. For lead-acid types the controller identifies the system voltage on its own. LI and USER modes are set in the app, where you also set the system voltage by hand. The LI boost charge voltage defaults to 14.2V per 12V of system voltage.
Temperature Sensor Included
The included temperature sensor has a 6.5 ft lead and plugs into its own port. BougeRV says it supports temperature compensation for SLD batteries.
Glue-Potted Aluminum Build
An aluminum shell and tempered glass cover help with heat dissipation, and BougeRV describes the inside as glue-potted and shock-resistant for mobile systems. A magnetic cover protects the terminals, and the unit carries an IP34 rating.
Self-Recovering Protection
Reverse connection, open-circuit, high-temperature and over-current/short-circuit protection are built in. The manual says each one recovers on its own without damage to the controller.
App and On-Screen Monitoring
The ChargePro 2.0 app shows battery SOC, PV voltage, charge mode, charging current and power, controller temperature and history, and lets you set charging parameters. BougeRV lists a 15 ft signal range. The backlit screen cycles battery voltage, SOC, temperature and error code.
Real-World Applications
RV solar. Keep lights and appliances running from a roof array without campground hookups.
Overlanding rigs. Turn available sunlight into power for lights, devices and gear on the trail.
Golf carts. Add solar charging to a compatible golf cart power setup to maintain the battery between rides.
Off-grid cabins. Build a 36V or 48V system with up to 2400W of panels at 48V.
Practical Comparison
MPPT Controller Versus PWM Controller
A PWM controller suits panels matched to battery voltage. This MPPT controller takes up to 150V of PV input, so it can work with higher-voltage panel strings.
12V to 48V Controller Versus a 12V/24V-Only Controller
A 12V/24V-only controller limits you to those two battery voltages. This one also covers 36V and 48V banks, which suits larger off-grid systems.
Buyer Guidance
Wiring and Setup
Connect the battery first, then the solar panels, and disconnect in the reverse order. Keep the array's open-circuit voltage from going over 150V, the panel current within 40A and the panel voltage above the battery voltage. Mount the controller close to the battery with short wires, in a well-ventilated, non-humid spot. It works with solar panels only, not a DC power supply. After changing battery settings, disconnect the solar panel and battery, then reconnect them.
This May Be A Good Fit If
- You run a 36V or 48V battery bank
- Your array is up to 2400W at 48V
- You want app monitoring without an add-on module
Common Questions
Can I Use It With a Lithium Battery?
Yes. Select LI mode in the app and set the system voltage to match your battery. Lead-acid types are detected automatically.
Why Is My Battery Not Charging?
BougeRV's manual lists reversed solar wiring, panel voltage lower than the battery voltage, or panel voltage over 150V. Check the PV polarity first, then the panel voltage.
How Big Is It?
It measures 8.6 x 5.9 x 2.6 in (218 x 150 x 65 mm) and weighs 4.6 lbs (2.1 kg).
What's Included
- 1 x BougeRV 40A MPPT Solar Charge Controller 12V/24V/36V/48V
- 1 x Temperature Sensor
One Controller From 12V to 48V
The BougeRV 40A MPPT Solar Charge Controller 12V/24V/36V/48V gives you up to 2400W of solar input, five battery modes, app monitoring and self-recovering protection in a glue-potted aluminum case. If you'd like help matching panels to your battery voltage, the Outbound Power team is happy to help.
BougeRV 40A MPPT Solar Charge Controller 12V/24V/36V/48V Specifications
|
| Electrical |
| Model |
MS4840N |
| System Voltage |
12V/24V/36V/48V (auto for FLD, SEL, GEL; manual for LI and USER) |
| Rated Charging Current |
40A |
| Maximum PV Input Voltage |
150V |
| Maximum PV Input Power |
600W (12V), 1200W (24V), 1800W (36V), 2400W (48V) |
| MPPT Tracking Efficiency |
Over 99% |
| Conversion Efficiency |
Over 98% |
| No-Load Loss |
12mA (12V), 10mA (24V), 6mA (36V), 3mA (48V) |
| Grounding |
Negative ground |
| Charging |
| Battery Types |
FLD, SEL (SLD/AGM), GEL, LI, USER |
| LI Boost Charge Voltage |
14.2V x n default, adjustable in app |
| Voltage Multiplier (n) |
1 for 12V, 2 for 24V, 3 for 36V, 4 for 48V |
| FLD Boost / Equalizing Voltage |
14.6V / 14.8V x n |
| SEL Boost / Equalizing Voltage |
14.4V / 14.6V x n |
| GEL Boost Voltage |
14.2V x n |
| Lead-Acid Float Voltage |
13.8V x n |
| Equalization |
FLD and SEL, 2 hours every 30 days |
| Lead-Acid Temperature Compensation |
-3 mV/2V/°C |
| USER Mode |
Defaults to GEL values, adjustable in app |
| LI and USER Setup |
App only, system voltage set by hand |
| Protection |
| Protections |
Reverse connection, open circuit, high temperature, over-current/short circuit (all self-recovering) |
| PV Overvoltage |
Error E10 above 150V |
| Protection Level |
IP34 |
| Monitoring |
| Display |
Backlit LCD with touch button |
| Screen Readings |
Battery voltage, battery SOC, temperature (°F/°C), error code |
| LED Indicators |
PV, BATT, FAULT |
| App |
ChargePro 2.0 over Bluetooth (Android 5.0 or iOS 9.0 and later, Bluetooth and GPS on) |
| App Data |
Battery SOC, PV voltage, charge mode, charging current, voltage and power, controller temperature, error info, history |
| Remote Control Signal Range |
15 ft |
| Communication Port |
RS485 |
| Temperature Sensor |
Included, 6.5 ft, external sensor port |
| Size and Weight |
| Dimensions |
8.6 x 5.9 x 2.6 in (218 x 150 x 65 mm) |
| Installation Size |
8.1 x 2.4 in (205 x 60 mm) |
| Installation Aperture |
0.2 in (5 mm) |
| Net Weight |
4.6 lbs (2.1 kg) |
| Working Temperature |
-31°F to 113°F (-35°C to 45°C) |
| Altitude |
Up to 3000 m |
| Housing |
Aluminum shell, tempered glass cover, magnetic terminal cover |
| Internal Design |
Glue-potted, shock-resistant |
BougeRV 40A MPPT Solar Charge Controller 12V/24V/36V/48V Manual
