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WEIYE SEPAT SF-50MDC Portable DC Solar air Cooler Evaporative Cooling Fan Solar air Cooler
Description
The WEIYE SEPAT SF-50MDC is a portable AC/DC solar evaporative air cooler built for maximum power flexibility — plug it into a standard wall outlet, run it from a 24V battery bank, or pair it with solar panels for completely off-grid operation. This triple-power design means a single unit works everywhere: in a grid-connected living room today, at a weekend outdoor event on battery power, and at a remote rural home on solar tomorrow. The integrated AC-to-DC converter handles grid power seamlessly, while the direct DC input bypasses conversion losses when running on battery or solar. Paired with a 200W solar panel and the included 24V 20AH lead-acid battery, the SF-50MDC delivers up to 4500 m³/h of cooled air across spaces of 20 to 45 square meters. The 40-liter water tank supports extended operation, and the mechanical control interface keeps operation simple and robust across all power modes. At its core, a DC brushless motor ensures quiet, efficient performance with minimal maintenance — regardless of which power source is active.
Key Features
AC/DC/Solar Triple-Power Freedom
The SF-50MDC runs on AC grid power, a 24V battery bank, or solar — a true triple-power hybrid. On AC, the built-in converter powers the motor while trickle-charging the battery. On DC, it connects directly to a battery or solar array with zero conversion loss. On solar, it charges and cools simultaneously during the day and switches to battery at night. One machine for every power scenario — eliminating the need for separate indoor and outdoor units.
Dual 24V 20AH Sealed Lead-Acid Batteries for Deep-Cycle Durability
Dual 24V 20AH sealed lead-acid batteries deliver 40AH total capacity for 3.5–17 hours of cooling. The valve-regulated design is maintenance-free, leak-proof, and heat-tolerant. On AC power, both batteries charge automatically as backup reserve.
200W Solar Panel Pairing for Self-Sustaining Cooling
A 200W solar panel recharges the battery in 3–4 hours while simultaneously running the cooler. With a larger solar array, the unit runs continuously during daylight and switches to battery at night — delivering round-the-clock cooling at zero electricity cost.
4500 m³/h Airflow with Mechanical Speed Control
A DC brushless motor drives 4,500 m³/h airflow across three speeds, controlled by mechanical rotary dials that resist dust, humidity, and temperature extremes. This rugged interface ensures reliable operation across homes, outdoor venues, and off-grid installations alike.
40-Liter Water Tank with Visual Level Indicator
The 40-liter tank provides 5-8 hours of cooling on a single fill at typical operating speeds. A front-mounted water level indicator shows remaining capacity at a glance, and the wide fill opening accepts water from buckets, hoses, or direct pipe connections.
PP Body with UV Stabilization
The housing is constructed from UV-stabilized polypropylene to resist sun damage, humidity, and impact during transport and repositioning. The material does not rust or corrode, making it a low-maintenance choice for outdoor installations in coastal, desert, and agricultural settings.
Technical Specifications
| Model name | SF-50M DC |
| Battery capacity | 24V20AH |
| Cooling area | 20-45m? |
| Air distance | 10m |
| Airflow | 4500m3/h |
| Voltage power | DC24V/AC230V/125W |
| Control type | Mechanical |
| Speed | 3 |
| Water tank | 40L |
| N.W. | 28.4kg |
| G.W. | 31.4kg |
| Packing size | 64*45.5*109cm |
| 40HQQTY | 210 sets |
Applications
Remote Construction Sites: Workers in temporary shelters and site offices receive cooling powered entirely by portable solar setups.
Rural Homes with Solar Panels: Existing rooftop solar systems can power the SF-50MDC directly, adding summer comfort without increasing grid electricity consumption.
Outdoor Catering and Food Stalls: Mobile vendors use the unit during market hours and recharge via solar panel during off-peak periods.
Agricultural Processing Areas: Cooling for sorting, packing, and short-term storage areas in farms and cooperatives where grid access is limited.
Community Centers and Field Clinics: Off-grid facilities use the cooler to maintain comfortable indoor temperatures for patients, staff, and visitors.
Manufacturing & Quality Assurance
Taizhou Weiye Refrigeration Equipment Co., Ltd. has specialized in home appliances - including evaporative air coolers and electric heaters - since 2007. Operating from a 10,000+ m² production facility with four active assembling lines and approximately 120 skilled employees, the factory maintains a daily output capacity of 1,500 to 2,000 units and ships products to over 16 countries across Europe, North America, South America, Southeast Asia, the Middle East, and Africa.
Every unit undergoes a full QC inspection before shipment, including motor performance testing, water tank leak testing, battery charge/discharge cycling, and cooling efficiency verification. The factory holds ISO 9001 quality management certification, and SEPAT-brand products have passed CCC, CE, FCC, CB, ROHS, and PSE certifications - backed by over 47 patent certificates - meeting safety and performance requirements for diverse international markets.
OEM and ODM services are available. Buyers can customize body color, branding, packaging, and select optional accessories to match local market requirements.
Frequently Asked Questions
Installation & Setup
Setting up the SEPAT evaporative air cooler takes less than 10 minutes and requires no specialized tools or professional installation. Place the unit on a flat, stable surface near an open window or doorway — this is important because evaporative cooling works best with a steady supply of fresh outside air. Fill the water tank through the top or side access port until the water level indicator shows full. If your model includes an ice box compartment, add frozen ice packs for an extra cooling boost. Plug the power cord into a standard AC outlet (for AC models) or connect to the DC power source (for DC/solar models). Select your desired fan speed and activate the cooling pump function. For optimal performance, position the cooler so that the airflow is directed toward the area where people gather, and keep a window slightly open on the opposite side of the room to allow proper air circulation and prevent humidity buildup.
Why Choose SEPAT Over Conventional Air Conditioning
For distributors and commercial buyers, the value proposition of evaporative cooling extends far beyond the purchase price. A SEPAT air cooler typically consumes 100 to 250 watts of electricity — roughly the same as two incandescent light bulbs — while a comparable split-system air conditioner draws 1,000 to 2,500 watts. Over a single cooling season in a warm climate, this difference can translate into hundreds of dollars in electricity savings per unit. Maintenance is equally straightforward: cleaning the water tank and replacing the cooling pad once per season are tasks that any end-user can perform, eliminating the need for costly HVAC service calls. Furthermore, because evaporative coolers contain no refrigerants, they are not subject to increasingly strict environmental regulations on HFCs and HCFCs, making them a future-proof product category for markets with tightening emissions standards. For businesses operating in dry and semi-arid regions — which cover much of the Middle East, Africa, Australia, and the southwestern United States — evaporative cooling is not just an economical alternative but often the most practical solution, as it actually adds beneficial moisture to dry indoor air rather than stripping it away.
How Evaporative Cooling Works
Evaporative air cooling is a natural, energy-efficient process that mimics the cooling effect of a sea breeze. Inside the unit, a water pump circulates water from the tank to the top of a honeycomb cooling pad. As warm outside air is drawn through the wet pad by the fan, the water evaporates, absorbing heat from the air and lowering its temperature by 5–15 °C before it is discharged into the room. Unlike compressor-based air conditioners that recirculate stale indoor air, evaporative coolers continuously introduce 100% fresh, filtered outside air, making them healthier for prolonged use and far cheaper to operate — typically consuming only 10–20% of the electricity of a comparable AC unit. The SF series coolers from Taizhou Weiye enhance this principle with thick 5090-grade cooling pads and powerful motors that maximize evaporative surface area and airflow volume. No refrigerants, no compressor, no closed-loop ductwork — just water, air, and physics.
Q1: What is the Minimum Order Quantity (MOQ) for SEPAT evaporative air coolers?
A: Our standard Minimum Order Quantity (MOQ) for any single model is one 40HQ shipping container (loading quantities generally vary from 140 to 850 units depending on the specific model's chassis and tank capacity). This single-container threshold applies to both our standard SEPAT configurations and customized OEM/ODM production runs. Sample orders for laboratory quality checks are welcomed prior to bulk contract finalization.
Q2: What is your standard B2B production lead time?
A: For standard SEPAT stock configurations, shipment takes 15–20 days. For custom OEM/ODM production runs, shipment occurs within 25–30 days after packaging artwork confirmation and deposit receipt.
Q3: How do you support overseas distributors with aftermarket warranties?
A: We stand behind our quality with a solid 1-Year Comprehensive Warranty on all SEPAT air cooler models. To ensure uninterrupted service in your territory, we ship 1% Free-of-Charge (FOC) essential spare parts directly inside your 40HQ container orders.
Q4: What is the container loading capacity for SEPAT air cooler models?
A: Because our product line ranges in water tank capacity (from 6L to 80L+), the loading quantity per container depends entirely on the specific product dimensions. Typically, one 40HQ container can accommodate between 140 to 850 units. Once you select your desired models, our logistics department will provide a highly optimized, precise container loading layout (Loading List) to maximize your ocean freight efficiency.
Email: [email protected]
Tel: +86-13957663596
Address: NO.699 Qinglongpu Road, Binhai industrial zone, Luqiao District, Taizhou, Zhejiang, China
