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Description
SR-HC2440-C PWM SOLAR CONTROLLERPWM Solar Charge Controller. Charging Current 40A, Load Current 40A, with RS485 Communication. It supports such 5 Battery types as custom, Sealed Lead Acid (Factory Default), Gel Lead Acid, Flooded (Open Cell) Lead Acid, Lithium Battery (Default LIFEPO4) PWM Solar Charge Controller Feature Products adopt 32 bit high speed main control chip and large screen LCD, with adjustable charging and discharging parameters It supports such five battery types as
PWM Solar Charge Controller. Charging Current 40A, Load Current 40A, with RS485 Communication. It supports such 5 Battery types as custom, Sealed Lead-Acid (Factory Default), Gel Lead-Acid, Flooded (Open Cell) Lead-Acid, Lithium Battery (Default LIFEPO4)
PWM Solar Charge Controller
Feature
- Products adopt 32-bit high-speed main control chip and large-screen LCD, with adjustable charging and discharging parameters
- It supports such five battery types as custom, sealed lead-acid (factory default), gel lead-acid, flooded (open cell) lead-acid, lithium battery (default lithium iron phosphate
- It supports the RS485 communication interface, and the baud rate is adjustable which can support maximum 115200kps
- Automatic identification of lead-acid battery system voltage.
- The complete multi-stage PWM charging management can be set to off-load charging for better support of voltage-sensitive loads.
- Temperature compensation is adopted to automatically adjust charging parameters
- Rich load working modes are easy to use in various DC loads.
- Protective functions including built-in reverse polarity protection, open circuit protection, high temperature protection, and overcurrent/short circuit protection (can be set) are self-recovery type without damage to the controller.
- Dual MOS anti-backflow circuit is equipped with ultra-low heat generation
- Lithium battery activation function is provided.
- The user-friendly browsing design and dynamic interface are convenient and intuitive for operation.
OPERATION INSTRUCTIONS
- The first step is to connect the battery: if the connection is correct, the controller screen will light up, otherwise, please check whether the connection is correct.
- The second step is to connect the solar panel: if there is strong enough sunlight (the voltage of the panel is higher than the voltage of the battery), the sun icon on the LCD screen will light up, otherwise, please check whether the connection is correct.
- The third step is to connect the load: connect the load cable to the load output terminal of the controller, and the current should not exceed the rated current of the controller.
- The controller will generate heat during operation, and it is recommended to install it in a ventilated and heat-dissipating environment.
- Select cables with sufficient capacity to avoid excessive loss on the line and misjudgment by the controller.
- A common positive electrode design is applied in the controller. If grounding is required, please ground the positive electrode.
- It is important to fully charge the battery frequently. The interval should be at least once a month, otherwise, it will suffer permanent damage. The battery can only be fully charged when more energy enters the battery than used by the load. Users should keep this in mind when configuring the system
- Please check whether each wiring terminal of the controller is locked, otherwise, the terminal will be vulnerable when the current is excessive.
Specifications
| SR-HC24-C SERIES TECHNICAL PARAMETER TABLE | ||
| MODEL | HC2440-C | |
| RATED CURRENT | CHARGE | 40A |
| LOAD | 40A | |
| CURRENT DISPLAY FUNCTION | Charging and discharging current display | |
| SYSTEM VOLTAGE | 12V/24V/U--(automatic identification) | |
| RATED POWER | 12V/600W 24V/1200W | |
| NO-LOAD LOSS | <7mA/12V ; <10mA/24V | |
| MAXIMUM PV INPUT VOLTAGE | Start the protection and stop charging when the voltage is above 55V. Continue to charge when the voltage is below 50V. | |
| MAXIMUM ALLOWABLE VOLTAGE AT THE BATTERY END | <32V | |
| BATTERY TYPE ¹ | b03(FLD) | |
| OVER - VOLTAGE PROTECTION | 16.0V | |
| EQUALIZING CHARGING VOLTAGE | 14.8V | |
| BOOST CHARGING VOLTAGE | 14.6V | |
| FLOAT CHARGE VOLTAGE | 13.8V | |
| CHARGING RECONNECT VOLTAGE | 13.2V | |
| OVER - DISCHARGE RECONNECT VOLTAGE | 12.6V | |
| OVER- DISCHARGE VOLTAGE | 11.1V | |
| EQUALIZING CHARGING TIME | 2H | |
| BOOST CHARGING TIME | 2H | |
| TEMPERATURE COMPENSATION | -3.0mV/°C/2V | |
| LIGHT CONTROL VOLTAGE | Light control on 5V, x2/24V; |
|
| TURN-ON DELAY OF LIGHT CONTROL | 1 minute | |
| COMMUNICATION METHOD | RS485 | |
| BAUD RATE | 2400~115200bps | |
| COMMUNICATION PROTOCOL | ModBus | |
| OPERATING TEMPERATURE | -35°C to 60°C | |
| ALTITUDE | ≤3000m | |
| PROTECTION GRADE | IP32 | |
| NET WEIGHT | 322g | |
| PROTECTION FUNCTION | Battery panel short-circuit protection; battery panel and battery reverse connection protection | |
| Over-temperature protection, load overload protection and short circuit protection | ||
| PRODUCT DIMENSIONS | 159*100*39 | |
| ¹Parameters when the battery type is 12V; For a 24V system, the relevant voltage points are automatically multiplied by 2; For a 48V system, the relevant voltage points are automatically multiplied by 4 | ||
Downloads
Additional Information
| Device | Controller |
| Type | PWM | Solar Charge |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Double Sided Cooling Pillow
Color: Blue, Size: King(2 Pack)-20'*36'
I truly love these pillows. They are sent with extra filling so if their not firm enough you can add more and if their to firm you can remove some. You can make these pillows to your liking. They fluff right back up. Their comfortable and you really get your moneys worth. I love them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
★★★★★ 5
Fantastic pillows
Color: Blue, Size: Standard(1 Pack)-20'*26'
Fantastic pillows----never get headaches like others
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
★★★★★ 5
Recommend this product
Color: Blue, Size: Queen(2 Pack)-20'*30'
I bought these for my boyfriend who is a hot sleeper. They are super thick & comfortable. The pillow stays cool & has a great texture. They didn’t have a bad smell. Bought these 3 years ago & they are still like brand new, durable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
★★★★★ 3
Good, but not life-changing
Color: Blue, Size: Queen(2 Pack)-20'*30'
These pillows are decent but not amazing. I like that they’re adjustable and come with extra fill, so you can make them softer or firmer depending on how you sleep. The cooling side feels nice at first, but it doesn’t stay super cool all night. They’re comfortable enough, but not a huge upgrade from regular pillows. Good, just not life-changing.
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Reviewed in the United States on February 26, 2026
★★★★★ 5
Qutool double sided cooling pillows
Color: Blue, Size: King(2 Pack)-20'*36', Color: Blue, Size: King(2 Pack)-20'*36'
After letting the pillows sit for 12 hrs they puffed up and feel great
Thus far satisfied with our purchase
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026