Skip to product information
1 of 7

ROCKSOLAR 40A MPPT Solar Charge Controller

ROCKSOLAR 40A MPPT Solar Charge Controller

Regular price $169.99 CAD
Regular price $259.99 CAD Sale price $169.99 CAD
Sale Sold out
Shipping calculated at checkout.
  • 100Vdc Max PV Input: Ideal for diverse solar panel setups.
  • 99.5% MPP Efficiency: Ensures optimal power generation.
  • 520W/1040W Max PV Power: Suitable for 12V/24V systems.
  • 3-Stage Charging Algorithm: Promotes battery health and longevity.
  • Lithium & Lead Acid Compatibility: Flexible for various battery types.
  • 40A Charging Current: Efficient power management.
  • 8-32V Voltage Range: Adapts to a wide array of systems.
  • IP30 Protection: Durable in challenging conditions.
  • Easy Monitoring: Light control voltage for better management.
  • User-Friendly Design: Simplifies installation and operation.

Local Shipping


1-year Hassle Free


Lifetime Customer

View full details
  • Description
  • Includes
  • Specifications
  • FAQ
  • Downloads
  • Reviews

High-Efficiency MPP Tracking: The ROCKSOLAR 40A MPPT Solar Charge Controller stands out with a superior tracking efficiency of 99.5%. This feature ensures optimal power generation from your solar panels in all weather conditions, making the most of available sunlight.

Advanced 3-Stage Charge Algorithm: Utilizing a state-of-the-art 3-stage charging process, the controller optimizes battery health and longevity. This intelligent algorithm efficiently manages the charging cycle, providing a safe and effective way to maintain your batteries.

Versatile Battery Compatibility: Designed to support a wide range of battery types, this controller is compatible with both Lithium and Lead Acid batteries. Its versatility makes it an ideal choice for various solar power systems, from residential setups to mobile applications.

Wide Operating Voltage Range: With a battery voltage range of 8-32V and a nominal system voltage of 12/24V, this controller caters to a broad spectrum of solar power requirements. The high voltage disconnection feature at 16V (24V x 2) adds an extra layer of safety and compatibility.

Light Control for Easy Management: The controller's light control voltage of 5V allows for straightforward monitoring and management of the charging process, ensuring your system operates at peak efficiency.

Durable and Reliable Construction: The IP30 protection rating of the charge controller ensures it is well-guarded against dust and moisture ingress. This robust build quality translates to enhanced durability and a longer lifespan for the unit.

User-Friendly Installation and Operation: Designed with simplicity in mind, the ROCKSOLAR 40A MPPT Solar Charge Controller is easy to install and operate. Whether you're a solar power novice or an experienced user, this controller offers a hassle-free solution to meet your solar charging needs.


    • 1x ROCKSOLAR 40A MPPT Solar Charge Controller: Efficiently manages solar power for optimal battery charging and longevity.
    • 1x User Manual: Detailed instructions for setup, operation, and maintenance, ensuring you get the most out of your solar charge controller.

    Technical Specifications

    Specification Details
    Model POW-Keeper1240
    PV Input Max Open Voltage of PV Module: 100Vdc
    MPP Tracking Efficiency 99.50%
    MAX PV POWER 520W for 12V system, 1040W for 24V system
    Charge Mode 3 Stage Charge Algorithm
    Battery Type Lithium and Lead Acid Battery
    Nominal System Voltage 12/24V
    Rated Charging Current 40A
    Battery Voltage Range 8~32V
    High Voltage Disconnection 16V (24V x 2)
    Duration for Absorption Charging 2 hours
    Charge Loop Voltage Drop ≤0.29V
    Self-consumption ≤ 9.2mA 12V; ≤ 11.7mA 24V
    Equalized Charging Voltage AGM: 14.6V; GEL: No; FLd: 14.8V
    Absorption Charging Voltage AGM: 14.4V; GEL: 14.2; FLd: 14.6V
    Floating Charging Voltage AGM/ GEL/ FLd: 13.8V
    Low Voltage Re-connection (LVR) AGM/ GEL/ FLd: 12.6V
    Low Voltage Disconnection (LVD) AGM/ GEL/ FLd: 10.8V
    Operating Temperature Range -20℃~55℃ (Full rated current)
    LCD Temperature Range -20℃~70℃
    Humidity Range ≤95% No condensation
    Protection Class IP30
    Dimensions 123*178*48 mm
    Installation Hole 108*120 ∅5

    The ROCKSOLAR 40A MPPT Solar Charge Controller can handle a maximum PV input of 100Vdc, making it suitable for a wide range of solar panel configurations.

    The controller boasts an MPP tracking efficiency of 99.5%, ensuring optimal solar energy conversion and power generation.

    Yes, the ROCKSOLAR 40A MPPT Controller is compatible with both Lithium and Lead Acid batteries, offering flexibility for different solar power systems.

    The controller has a rated charging current of 40A, providing efficient power management for larger solar systems.

    Yes, with an IP30 protection rating and an operating temperature range of -20℃ to 55℃, the controller is designed to perform reliably in diverse conditions.

    Customer Reviews

    Based on 21 reviews
    Carinne Annett
    Does not work

    Received does not work waiting on reply to send back


    no customer service will never buy again

    Just what I needed

    This charge controller unit is working flawlessly charging my four 6v battery bank on my RV.

    Excellent product Excellent Company Love it!

    Rocksolar 40 Amp Best Controller on the Market I Love it. Excellent product Excellent Company Love it!, Recommended.

    Great Charge Controller

    Good product for price. Increased the charging power of my solar panels.