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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
4.0 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
LOVE this tough toy! My teething puppy is still enjoying it!
Color: Hedgehog
LOVE the hedgehog! Very tough! My dachshund has not been able to chew off any of the 'nubs', and does she try! lol The only thing is, the first thing she did was chew off the nose, but I discarded it and watched her closely to make sure she didn't chew off any more, and no, its still being chewed on.
Wish I could find more toys like this one!!
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Reviewed in the United States on May 21, 2026
★★★★★ 3
still searching for a truly indestructible dog chew toy
Color: Hedgehog
My smallish dog (15 lb Boston terrier) got this chewed up within a half an hour. I didn't notice right away that he was also eating the parts he chewed off. Didn't last a day. Otherwise, quick shipping for a cute toy.
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Reviewed in the United States on June 12, 2026
★★★★★ 5
Good size for my pug!
Color: Dentachew 3 Pk
I love how it’s a good size for my pug it is easy for her to play around with. I had stuffed animals for her to play around with but it looked so silly to watch her play with something that is 10 times as big as her 😂. I had to buy her these toys and she seemed so happy when she first got them.
It was so funny and interesting that she had to chew all three toys and decide which one she liked. At first she decided to play with the rope toy and she liked the rope toy, then she got curious with the rubber toys. She has decided that the rubber toys are her favorite and I’ve tried to engage with playing with her with the rope toy. She gets more interactive with the rubber toys! She also looked so relieved while chewing them so that’s a plus!
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Reviewed in the United States on May 16, 2026
★★★★★ 4
Good for Teething puppies
Color: Teething Stick
After getting my fingers chewed and bitten by my new foster - 8 week old Yorkie , I was desperate to find good teething toys. Fortunately this one arrived quickly. Turned out to be very good for teething puppies! Charlie loves this cooling stick. Once it’s frozen, the cold really seems to soothe his sore gums. The icy part doesn’t stay frozen for long, but it works so well that I bought a second one to keep ready in the freezer while he’s working on the first.
Even after it warmed up, he still enjoyed chewing on the soft stuffed part and the tentacles. The product card says not to use it as a chew toy, so supervision is a must, but it held up just fine so far.
Overall, this has been a big help during the teething phase — short-lived when frozen, but very effective while it lasts! And worth every penny to save my fingers from being a chew toy.
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Reviewed in the United States on October 7, 2025
★★★★★ 5
From Puppy Teething to Adult Favorite – 7 Years Later
Color: Teething Stick, Color: Teething Stick
This has been one of the best toys I’ve ever bought! My dog has loved the Pupstages Cool Teething Stick since she was a tiny puppy, and now at 7 years old, it’s still one of her absolute favorites. It’s been amazing for soothing teething when she was little, and now she still enjoys chewing on it and carrying it around.
It’s held up surprisingly well over the years, especially considering how much use it’s gotten. I also love that you can cool it for extra relief—it really helped during those puppy stages.
If you’re looking for a toy that lasts and actually becomes a long-term favorite, this is definitely it. Highly recommend for both puppies and even older dogs who still love a good chew! 🐶
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Reviewed in the United States on May 1, 2026