12V 300Ah LiFePO4 Battery Deep Cycle | Smart Bluetooth BMS | 3840Wh for RV, Marine & Solar | Factory Direct Wholesale
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Massive Energy: 12.8V 300Ah real capacity (3840Wh Total Energy) – Drop-in replacement for 4x 12V 100Ah Lead-Acid batteries.
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Smart Monitoring: Integrated Bluetooth Module & LCD Screen for real-time voltage and SOC tracking via Mobile App.
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High Performance BMS: Supports 200A Max Continuous Discharge – Easily powers 2500W+ inverters and heavy loads.
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Long Lifespan: Automotive-grade LiFePO4 cells ensure 6000+ deep cycles at 80% DoD.
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B2B Services: Factory price, Low MOQ (Accept Sample Orders), Custom Label/OEM available.
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Certifications: CE, FC, RoHS, UN38.3 MSDS ready for global shipping.
Product Catalogue
Product Description
Next-Gen Power: The Ultimate 12V 300Ah Lithium Solution
Upgrade your energy system with Balder Power’s 12V 300Ah LiFePO4 battery. Engineered for demanding off-grid applications, this battery packs 3.84kWh of energy into a standard Group 8D sized ABS case. Unlike traditional lead-acid batteries, our lithium solution offers zero maintenance, 1/3 the weight, and consistent power delivery.
Built for Smart Energy Management
Stop guessing your battery status. This model features a dual-monitoring system:
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Built-in LCD Display: Instantly check voltage and capacity on the battery top.
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Bluetooth App Connectivity: Connect via iOS/Android App to monitor precise State of Charge (SOC), Temperature, and Current from your smartphone. Perfect for installation in hard-to-reach areas like RV under-seat compartments or marine hulls.
Industrial-Grade Safety & Reliability
Safety is our priority. The intelligent Battery Management System (BMS) protects against overcharging, over-discharging, short circuits, and extreme temperatures. With a robust ABS casing and heavy-duty rope handles, it is designed to withstand vibrations in mobile applications like Luxury RVs and Floor Scrubbers.
Technical Parameters
| Item | Specification |
|---|---|
| Nominal Voltage | 12.8V |
| Rated Capacity | 300Ah (3840Wh) |
| Dimensions (L*W*H) | 525 * 270 * 220 mm (±2mm) |
| Approx. Weight | 32 Kg |
| Cycle Life | ≥6000 Cycles @ 80% DOD |
| Max. Continuous Charge Current | 100A |
| Max. Continuous Discharge Current | 200A |
| Terminal Type | M8 Copper Terminals |
| Case Material | Rugged ABS Plastic |
| Communication | Bluetooth App + LCD Screen |
| Certifications | CE, RoHS, UN38.3, MSDS |
Features & Advantages
🔋 True 300Ah Capacity (3840Wh) Don’t settle for “fake capacity.” We guarantee 100% usable energy. With a flat voltage curve, you get steady 12V power until the very last drop, unlike lead-acid voltage sag.
📱 Smart Bluetooth 5.0 Technology Integrated with a high-precision Bluetooth module. Visualize your energy consumption. The App displays Voltage (12.8V), Current, Cycle Life, and Temperature in real-time.
🛡️ 200A Powerful BMS Protection Equipped with a high-current BMS allowing 200A continuous discharge. This means you can run coffee makers, microwaves, or air conditioners directly without tripping the system.
🌡️ Extreme Weather Performance Engineered to perform. Charges from 0°C to 55°C and discharges down to -20°C. Ideal for outdoor telecom stations and harsh marine environments.
💰 Factory Direct B2B Pricing Cut out the middleman. As a direct supply partner, Balder Power offers competitive wholesale pricing for installers and distributors. We support small batch trial orders to test our quality.
Packing & Delivery
Secure & Compliant Packaging
To ensure safe transit for Class 9 Dangerous Goods, every battery is protected with high-quality Pearl Wool (EPE Foam) and encased in UN-certified cartons. For bulk shipments, we utilize sturdy Plywood or Plastic Pallets wrapped in shrink film, fully compliant with international shipping regulations.
Global Shipping Options (Incoterms)
We support flexible shipping terms to suit your business needs, including FOB, CIF, and DDP (Door-to-Door including tax).
- By Sea: The most economical choice for bulk orders.
- By Air / Express: Fast delivery for samples (DHL/UPS/FedEx).
- By Railway: Reliable CR Express service for European and Central Asian markets.
Production Lead Time
Our lead time varies based on product customization:
| Product Type | Samples | Bulk Order |
|---|---|---|
| Standard Models | 15 - 20 Days | 25 - 30 Days |
| Customized Models | 30 - 40 Days | 30 - 40 Days |
FAQ
Frequently Asked Questions
Q1: Can I connect these 12V 300Ah batteries in series to make a 24V or 48V system? Yes, our 300Ah LiFePO4 batteries support series connection up to 4 units (48V system) and parallel connection for increased capacity. Please balance the voltage before connecting.
Q2: What is the lead time for a sample order versus a bulk wholesale order? For sample orders (1-5 units), we typically ship within 3-5 working days. For bulk OEM orders (e.g., container loads), production time is 15-20 days.
Q3: Do you provide UN38.3 and MSDS documents for shipping? Absolutely. As a compliant exporter, we provide full certification documents including UN38.3, MSDS, and CE to ensure smooth customs clearance for our partners.
Q4: Is the Bluetooth App compatible with both iPhone and Android? Yes, the smart BMS connects to a free proprietary App available on both the Apple App Store and Google Play Store, allowing you to monitor battery health remotely.
Q5: Can you print my logo on the battery case (OEM Service)? Yes, we offer OEM/ODM services. We can custom print your logo on the ABS case and design the label for orders meeting our MOQ requirements.
Q6: What is the warranty policy for commercial/industrial use? We offer a standard 5-year warranty for our LiFePO4 batteries. Our dedicated support team provides technical assistance within 24 hours.
