24V 20A Solar Charge Controller MPPT Solar Charger Controller with LCD Display
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Product Highlights
- 99.9% MPPT Efficiency: Advanced dual-peak tracking algorithm ensures up to 99.9% optimum MPPT tracking efficiency.
- 98% Conversion Rate: Advanced digital power supply technologies raise circuit energy conversion efficiency to 98%.
- 15-20% Higher Efficiency: Charging efficiency is 15% to 20% higher compared with conventional PWM methods.
- LCD Display & Modbus: LCD screen for data/status check and parameter modification; supports standard Modbus protocol.
- Multi-Battery Compatibility: Supports gel, sealed, open, and lithium batteries with automatic voltage recognition.
- Over-Temperature Protection: Built-in mechanism declines charging current linearly with temperature to prevent damage.
- 1-Year Warranty: Comprehensive 1-year warranty and after-sales service included with the product.
- Data Storage Function: Historical data storage function available, capable of storing data for up to one year.
Product Attributes
- Customization
- Available
- Condition
- New
- Certification
- CE
- Model NO.
- SMC24-20(20A)
- Application
- Solar System Controller, Charger Controller, Solar Working Station, Voltage Controller
- Rated Voltage
- 24V
- After-Sales Service
- 1 Year
- Warranty
- 1 Year
- Hole Positions
- 154*131mm
- Hole Diameter
- Φ3mm
- Applicable Wire
- Max. 8 AWG
- System Voltage
- 12V/24vauto
- No-Load Loss
- 0.7 W to 1.2W
- Battery Voltage
- 9V to 35V
- Protection Degree
- IP32
- Weight
- 1.4kg
- Communication Method
- RS232
- Altitude
- ≤ 3000m
- Transport Package
- Carton + Pallet
- Specification
- 210*151*59.5mm
- Trademark
- Sunstone Power
- Origin
- Shenzhen, China
- HS Code
- 8504403090
- Production Capacity
- 50, 000PCS/Month
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
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Product Description
multiple peaks on the I-V curve, the controller is still able to accurately track the maximum PowerPoint.
• A built-in maximum power point tracking algorithm can significantly improve the energy utilization efficiency of photovoltaic systems, and raise the charging efficiency by 15% to 20% compared with the conventional PWM method.
• A combination of multiple tracking algorithms enables accurate tracking of the optimum working point on the I-V curve in an extremely short time.
• The product boasts an optimum MPPT tracking efficiency of up to 99.9%.
• Advanced digital power supply technologies r aise the circuit's energy conversion efficiency to as high as 98%.
• Charging program options are available for different types of batteries including gel batteries, sealed batteries, open batteries, lithium batteries, etc.
• The controller features a limited current charging mode. When the solar panel power exceeds a certain level and the charging current is
larger than the rated current, the controller will automatically lower the charging power and bring the charging current to the rated level.
• Instantaneous large current startup of capacitive loads is supported.
• Automatic recognition of battery voltage is supported.
• LED fault indicators and an LCD screen that can display abnormality information help users to quickly identify system faults.
• Historical data storage function is available, and data can be stored for up to a year.
• The controller is equipped with an LCD screen with which users can not only check device operating data and statuses but also modify
controller parameters.
• The controller supports standard Modbus protocol, fulfilling the communication needs of various occasions.
• The controller employs a built-in over-temperature protection mechanism. When temperature surpasses the set value, the charging
current will decline in linear proportion to the temperature to curb the temperature rise of the controller, effectively keeping the
controller from being damaged by overheating.
• Featuring a temperature compensation function, the controller can automatically adjust charging and discharging parameters to
extend the battery's service life.
• TVS lighting protection.
Wiring diagram as below:


| Max. solar input voltage |
100V(25ºC) 90V(-25ºC)
|
|
Max. power point voltage range
|
Battery Voltage+2V to 75V
|
| Rate load current | 20A |
| Rate charging current | 20A |
| Max. capacitive load capacity | 1000uF |
| Max. Photovoltaic system input power | 260w/12v 520w/24v |





Sunstone Power Co. Ltd. was established in 2003, Sunstone Power has 19 years experience of in manufacturing, marketing, brand name building of lead-acid batteries/battery plates.
Our factories (both plates factory & assembling factory) locate in Kunming City, Yunnan P.R. China. Since Yunnan P.R. is one of the main lead supply areas, we have good advantages of quality control, delivery control, and cost control. So far we are the only factory that gets pollution control permission from the government in Yunnan P.R.
Besides this, we set up our German company in Frankfurt in 2017 and Indonesia company in Jakarta since the end of 2018.
We have our warehouse in both these two countries. It gives fast delivery and stock support to European and Southeast Asian markets.


Partners :

Payment
1. Pay through T/T, western union, PayPal…
2. Price term: FOB Shenzhen port, CFR, CIF.
3. The customer is responsible for any tax or bank charges by their country.
Packaging & Shipping
1. By sea, by air shipping, by car or train, other good shipping ways also welcomed.
2. We will send products in 30- 35 days after the bank receipt.
3. A tracking number and photos of products will send by email after arrange shipped.
Safety Instruction:
Do not immerse the pack in water or wet it;
Do not contact directly the battery positive and negative electrode with the metal shell;
Do not short circuit, over-charge, or over-discharge the pack;
Do not use or expose the pack to extreme heat or flame;
Do not reverse the posit.
About the Supplier
This supplier has been audited by TÜV Rheinland. Verify the report on the official TÜV Rheinland website with ID "MIC-ASR252341". Items marked "" are certified.
Company Profile
Sunstone Power Group Headquarters: Solid Power Industrial (Shenzhen) Co., Ltd. Has 20 years of experience producing and selling battery products. Established in 2003, the company has grown into an enterprise group that consists of two factories in China: A lead-acid battery production factory in Yichun City, Jiangxi P. R, and a lithium battery production factory in Dongguan City, Guangdong P. R.; Two overseas companies are also established: Sunstone Power Industrial GmbH in Germany and PT. Solid Power Energi in Indonesia.
Sunstone Power Group supplies high-quality batteries and other energy products to worldwide customers located in more than 100 countries. Furthermore, our German and Indonesian companies have their own office/warehouse, which always keeps stock to provide fast logistics and service to local clients. Moreover, in Germany, we also supply the whole solution for home-use solar systems, camper van solar systems, etc. Besides our own overseas companies, we also built exclusive distributors in Malaysia, Yemen, Iraq, Mauritania, South Africa, Russia, Venezuela, Honduras, and Costa Rica.
About Our Factory & Business Background
- Address
- Room 1803a, Building B, Tiley Fame City, Haide 3rd Avenue, Nanshan District, Shenzhen, Guangdong, China
- Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment, Money Gram
- International Commercial Terms(Incoterms)
- FOB, EXW, CFR, CIF, DAT, FAS, DDP, CIP, CPT, Others, FCA
- Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: one month - Nearest Port
- Shenzhen,Guangdong
Our Production Capability & Technical Expertise
Our Industry Experience & Global Business Record
- Export Year
- 2002-01-01
- Main Markets
- North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
FAQ
- What is the MPPT tracking efficiency?
- The product boasts an optimum MPPT tracking efficiency of up to 99.9%.
- How does this controller compare to PWM?
- It raises the charging efficiency by 15% to 20% compared with the conventional PWM method.
- What battery types are supported?
- Charging program options are available for gel, sealed, open, and lithium batteries.
- Does it have over-temperature protection?
- Yes, the charging current declines linearly with temperature to prevent overheating damage.
- What is the warranty period?
- We provide a 1-year warranty and after-sales service.
- How long is the delivery time?
- We will send products in 30-35 days after receiving the bank receipt.
- What payment methods are accepted?
- We accept T/T, Western Union, PayPal, LC, D/P, and other methods.
- Can I modify controller parameters?
- Yes, the LCD screen allows users to check data and modify controller parameters.
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