SMK Solar Freezer 300Liters - DCF308

SMK Solar Freezer 300 Liters (DCF308): Industrial-Scale Solar Cooling

The SMK Solar Freezer 300L (DCF308) is a high-capacity, heavy-duty cooling solution designed for large families, commercial shops, and catering businesses. As the larger counterpart to the 200L model, the DCF308 provides massive storage space while maintaining the extreme energy efficiency required for off-grid solar systems. Thsi systems works across all cities such as Lagos, Abuja, Ibadan, and all the country

At Kara Nigeria, the current price for the SMK 300L Solar Freezer is approximately ₦840,000.00.

Key Features of the SMK DCF308

1. Massive 300-Liter Capacity: Designed for bulk storage of meat, fish, and frozen goods, making it perfect for both large households and commercial retail.
2. Dual Power Versatility: Operates on DC 12V/24V (auto-sensing) for direct solar connection and can also run on AC 220V for use with the grid or a generator.
3. Efficient Rated Power: Despite its large size, it operates on a rated power of 78W - 105W, ensuring it doesn't drain your battery bank overnight.
4. Extra-Thick 80mm Insulation: Features high-density thermal walls that keep the interior frozen for up to 48 hours after power is disconnected.
5. Outside Condenser: Unlike standard home freezers, the condenser is placed on the outside for faster heat dissipation, essential for the Nigerian heat.
6. Advanced Protection Systems: Built-in low voltage protection, circuit fuse protection, and automatic electrode direction protection to safeguard the unit from electrical damage.

Technical Specifications At-A-Glance

Optimizing Your Solar Setup for the 300L Freezer

To ensure this large freezer runs 24/7 without interruption, your panels for solar and battery bank must be sized correctly.

Recommended System Requirements:

1. Solar Panels: A minimum of 450W to 600W (e.g., three 200W Monocrystalline panels) to ensure the batteries recharge fully even on cloudy days.
2. Battery Bank: A 200Ah or 300Ah Deep Cycle Battery (Gel or Lithium) is recommended to provide enough "reserve power" for the night.
3. Charge Controller: A 40A or 60A MPPT controller is ideal to handle the current from the panels and protect the battery.

Direct DC Method: The Most Efficient Way to Cool

The SMK DCF308 is a Direct DC appliance. This means you can connect it straight to your battery/solar controller without an inverter.

1. The Pro: You avoid the 15% energy loss that happens when an inverter converts DC to AC. This allows your freezer to stay colder for longer on the same battery size.
2. The Con: You must use high-quality, thick DC cables to prevent "voltage drop" if the freezer is located far from the battery.

Where to Buy in Nigeria

For genuine SMK Solar products with professional support, Kara.com.ng is the trusted destination.

1. Full Warranty: Includes the official manufacturer’s one-year warranty on the compressor.
2. Expert Delivery: Secure, crated shipping across Nigeria to prevent damage to the cooling coils or exterior.
3. Installation Help: Access to a network of technicians who can assist in wiring your solar system.

Conclusion: The Commercial Standard

The SMK Solar Freezer 300L (DCF308) is the definitive choice for anyone who needs large-scale freezing capabilities without the massive electricity bills. Its combination of thick insulation, high-efficiency DC compressor, and rugged design makes it the most reliable A3-sized cooling hub for off-grid Nigeria in 2026.

Would you need to get a 600W solar panel array or a 200Ah Lithium battery to power your new 300L freezer?

To run a large industrial unit like the SMK 300L Solar Freezer, you need a power system that can handle its 105W draw 24/7, especially during the night or on cloudy days.

Here is the 2026 price breakdown for the recommended 600W solar array and 200Ah Lithium battery based on current listings at Kara Nigeria and the wider market.

1. 600W Solar Panel Array

To achieve 600W, you can either use a single high-capacity industrial panel or a combination of smaller panels. In 2026, high-wattage monocrystalline panels are the most space-efficient choice for Nigeria’s climate.

1. SMK/Kartel 600W Monocrystalline Panel: ~₦120,000 – ₦185,000 per panel.
2. 3x Kartel 200W Mono Panels: ~₦174,000 (approx. ₦58,000 each).
3. Note: Using three 200W panels can sometimes be easier for roof mounting and provides redundancy if one panel is shaded.

2. 200Ah Lithium (LiFePO4) Battery

Lithium batteries are the gold standard for solar freezers because they can be discharged more deeply (up to 90%) than Lead-Acid or Gel batteries, ensuring your freezer doesn't shut down at 3:00 AM.

1. SMK Solar 12V 200Ah Lithium Battery: ~₦400,000 – ₦550,000.
2. Premium SMK 51.2V 200Ah (5kWh) Wall-Mount: ~₦2,070,000.
3. Tip: For a single freezer setup, a 12V 200Ah Lithium battery is usually sufficient and much more budget-friendly than the 48V/51V server-rack versions.

3. The Complete Power Package (Estimated)

If you are starting from scratch, here is what a balanced system for the SMK 300L (DCF308) looks like:

Why this specific setup?

1. Efficiency: By using a Direct DC freezer, you skip the inverter. An inverter would normally consume about 10–15% of your battery just staying "on." This setup saves you roughly 1.5 hours of extra cooling time every night.
2. Longevity: Lithium batteries typically last 10 years, whereas cheaper Gel batteries often need replacing after 2 years in the Nigerian heat.

Where to buy?

You can find these components individually or as a bundle on Kara.com.ng. Buying from Kara ensures you get genuine SMK Solar products with the official 1-year warranty on the freezer compressor.