Smart Solar Control for Reliable Farm, RVs & Off-Grid Power

JJN MPPT Solar Charge Controllers deliver high efficiency, wide voltage flexibility, and industrial-grade reliability for demanding agricultural and off-grid environments.

solar charge controller

High-Efficiency MPPT Technology

Advanced MPPT tracking maximizes solar energy harvest in changing weather conditions, improving charging efficiency compared to traditional controllers.

solar charge controller

Wide System Voltage Compatibility

Supports 12V to 72V battery systems, allowing one controller to fit a wide range of farm, yard, and off-grid solar applications.

solar charge controller

Multi-Battery Support

Compatible with lead-acid and lithium battery technologies, including LiFePO₄, offering flexibility for both existing systems and future upgrades.

solar charge controller

Built for Harsh Environments

Designed with comprehensive electronic protection and temperature tolerance for reliable 24/7 operation in agricultural and remote settings.

solar charge controller

Smart Load & Remote Monitoring Ready

Integrated load control and communication support enable smarter energy management for irrigation, monitoring, and automated farm equipment.

Choosing the Right MPPT Controller

jjn mppt charge controller

40A MPPT — Ideal for Small to Medium Systems

Best for:
RVs, small farms or ranches
Livestock tracking and monitoring systems
Lighting, cameras, electronic gates
12V / 24V solar systems

Why choose 40A:
Cost-effective, efficient, and perfectly suited for essential farm loads and entry-level off-grid setups.

jjn mppt charge controller

60A MPPT — Built for Higher Power Demands

Best for:
Medium to large farms
Irrigation systems and water pumps
Multiple automated feeders and climate devices
24V / 48V and higher-capacity systems

Why choose 60A:
Higher charging capacity supports larger solar arrays and batteries, making it ideal for farms with continuous or expanding energy needs.

Simple Recommendation

If your system powers monitoring and light automation, choose 40A.
If your system runs irrigation, pumps, or multiple farm loads, choose 60A.

Technical Specifications

40A

System Voltage 12V/24V/36V/48V/60V/72V
Maximum Charging Current 40A
Maximum PV Input Current 35A
Max. PV open circuit voltage 120VDC
MPPT operating voltage point range (Battery voltage +2) ~ 150VDC
Max. PV Input Power 12V/480W, 72V/2280W
Rated Load Current 20A
Quiescent Dissipation < 60mA/12V
Battery Operating Volatge Range 9-90V
Ground Type Negative
Working Temperature Range -10 - +60°C
Function Constant voltage output setting,lead acid battery charging temperature compensation, temperature protection, overload/short cicuit protection, load pre-start.
Protection Level IP32
Cooling-down Method Strong Cold Fan
Dimensions 215 x 211 x 93 mm
Weight 2.5kg
Certifications CE, RoHS
Warranty 2-years

60A

System Voltage 12V/24V/36V/48V/60V/72V
Maximum Charging Current 60A
Maximum PV Input Current 50A
Max. PV open circuit voltage 160VDC
MPPT operating voltage point range (Battery voltage +2) ~ 150VDC
Max. PV Input Power 12V/720W, 72V/4320W
Rated Load Current 30A
Quiescent Dissipation < 60mA/12V
Battery Operating Volatge Range 9-90V
Ground Type Negative
Working Temperature Range -10 - +60°C
Function Constant voltage output setting,lead acid battery charging temperature compensation, temperature protection, overload/short cicuit protection, load pre-start.
Protection Level IP32
Cooling-down Method Strong Cold Fan
Dimensions 258 x 211 x 93 mm
Weight 2.5kg
Certifications CE, RoHS
Warranty 2-years

FAQs

Is an MPPT controller necessary for farm solar systems?

Yes. MPPT controllers maximize energy harvest from solar panels, which is critical for farms that rely on solar as a primary or backup power source.

Can JJN MPPT controllers work without grid power?

Absolutely. JJN MPPT controllers are designed for off-grid and hybrid systems, making them ideal for remote farms.

Are these controllers compatible with lithium batteries?

Yes. JJN MPPT supports LiFePO₄ and other battery technologies, with adjustable charging parameters for safe and efficient operation.

Is solar power reliable for irrigation systems?

Yes. With proper system sizing and battery storage, solar-powered irrigation can operate consistently while reducing fuel and electricity costs.

How safe is solar compared to diesel generators?

Solar systems eliminate fuel storage, exhaust fumes, and fire hazards associated with diesel generators, significantly improving farm safety.

Will the system work in cold or hot climates?

Yes. JJN MPPT controllers are designed to operate across a wide temperature range, suitable for diverse agricultural environments.

Can the system be expanded later?

Yes. JJN MPPT controllers support scalable solar systems, allowing farms to add panels, batteries, or loads as energy needs grow.

How much maintenance is required?

Very little. Solar controllers have no moving parts and require minimal inspection compared to fuel-based generators.