Factory Direct 12V 40Ah LiFePO4 Battery (U1 Size) – Waterproof Deep Cycle | Wholesale & OEM Available
Source directly from the manufacturer: The BPE-U1-1240 Series is a rugged, IP65 waterproof 12V 40Ah LiFePO4 battery. Designed as a premium drop-in U1 replacement, it offers marine-grade durability and 6000+ cycles at unbeatable factory-direct pricing. Perfect for bulk buyers, marine applications, and outdoor mobility devices.
Product Description
Upgrade your inventory or equipment with our industrial-grade 12V 40Ah Lithium Iron Phosphate (LiFePO4) Battery. Engineered for harsh environments, this battery features a fully sealed, waterproof ABS casing, making it the ideal energy solution for marine trolling motors, outdoor scooters, and field instrumentation.
By cutting out the middleman, we offer this high-performance U1-sized battery at factory wholesale prices, ensuring maximum margin for distributors and cost-efficiency for large-scale projects. Despite its competitive pricing, it compromises nothing on quality—featuring top-tier automotive-grade cells and a smart BMS that ensures safety and longevity. Whether you need a single unit or a container load, this battery delivers consistent power with a service life exceeding 10 years.
Technical Parameters
| Attribute | Specification | Attribute | Specification |
|---|---|---|---|
| Model Number | BPE-U1-1240 (OEM Available) | Battery Type | LiFePO4 (Lithium Iron Phosphate) |
| Nominal Voltage | 12.8V | Nominal Capacity | 40Ah |
| Total Energy | 512 Wh | IP Rating | IP65 (Waterproof / Dustproof) |
| Dimensions | 198 * 130 * 185 mm (U1 Std) | Cycle Life | ≥ 6000 Cycles @ 80% DOD |
| Weight | Approx. 6.0 kg | Pricing | Factory Direct / Wholesale |
| OEM/ODM service | Supported (Label/Case Color) | Warranty | 5 Years |
Features & Advantages
🌊 IP65 Waterproof & Rugged Design Built for the outdoors. The high-strength ABS housing is sealed with industrial-grade ultrasonic welding and sealants, achieving an IP65 waterproof rating. This protects internal components from rain, splashes, and moisture, making it perfect for marine electronics, kayaks, and outdoor UPS systems.
🏭 Factory Direct & Cost-Effective Get the best value for your investment. We provide transparent factory-direct pricing, eliminating retail markups. This model is optimized for wholesale distribution, OEM projects, and bulk system integrators looking for a high-quality, budget-friendly LiFePO4 solution.
🧩 Standard U1 “Drop-in” Fit Compliance with BCI Group U1 standards (approx. 198130185mm) ensures universal compatibility. It serves as a direct, lightweight replacement for heavy 12V 35Ah/40Ah lead-acid batteries without requiring cable modifications.
🛡️ Advanced Smart BMS Reliability you can trust. The integrated Battery Management System safeguards against common failures: overcharge, over-discharge, short-circuit, and thermal runaway. It ensures the battery operates safely in diverse weather conditions.
🔄 Long Lifecycle (6000+ Cycles) Designed for deep cycling. While lead-acid batteries fade after a year, our LiFePO4 chemistry maintains performance for over 6000 cycles at 80% DOD, drastically reducing replacement costs and e-waste over time.
Manufacturing & QC Process
Precision Engineering: Our Energy Storage Battery Manufacturing Process
Quality is not just inspected; it is manufactured at every step. At Balder Power, we implement a rigorous LifePO4 production protocols that goes beyond industry standards. From automotive-grade cell sorting to 100% full-cycle aging tests, our transparent manufacturing process ensures every Energy Storage System (ESS) delivers maximum safety and longevity for your projects.
Custom Engineering & ODM Design
Our Wuhan engineering team translates your voltage and capacity requirements into precise CAD blueprints. We simulate structure and thermal management to ensure the battery pack fits your application perfectly before production begins.
Premium A-Grade Cell Sourcing
Quality starts at the core. We strictly select brand-new, A-grade LiFePO4 or NCM cells from Tier-1 manufacturers (like CATL, EVE, Ganfeng). We match cells specifically for your project's energy density and cycle life needs.
Precision Capacity & IR Sorting
To guarantee pack longevity, consistency is key. We utilize automated sorting machines to group cells with identical Internal Resistance (IR) and Voltage. This strictly eliminates the "barrel effect," ensuring the entire pack performs at peak efficiency.
Automated Matrix Spot Welding
Our robotic welding arms execute high-precision spot welding using pure copper strips. This process ensures low-impedance connections and structural rigidity, preventing vibration damage during transportation or mobile usage.
Smart BMS Integration & Wiring
The "Brain" of the battery is installed. We integrate advanced Battery Management Systems (BMS) with communication protocols (CAN/RS485). Technicians organize signal wires neatly to prevent short circuits and ensure accurate thermal monitoring.
Structural Assembly & Insulation
Before closing the case, we apply industrial-grade insulation and shock-absorbing materials. The semi-finished packs are inspected for layout integrity to meet IP protection ratings for dust and moisture resistance.
100% Aging Cycle Test & OQC
Zero tolerance for early failures. Every finished battery undergoes a rigorous aging test (Charge/Discharge cycles) to simulate real-world stress. Final OQC includes voltage checks, BMS communication tests, and visual inspection.
UN38.3 Compliant Safety Packaging
Safety extends to delivery. We use customized wooden crates and high-density foam that meet UN38.3 dangerous goods transport standards, ensuring your goods arrive safely via sea or air freight.
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
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Is this battery suitable for marine use? Yes. The BPE-U1-1240 features a sealed ABS casing with an IP65 waterproof rating. This makes it highly resistant to splashes, rain, and salt spray, making it an excellent choice for trolling motors, kayaks, and small boats.
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Do you offer wholesale or bulk pricing? Absolutely. We are the manufacturer and specialize in B2B supply. We offer tiered pricing for bulk orders, distributors, and OEM partners. Please contact our sales team for a custom quote based on your volume.
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Can I customize the label or brand? Yes, we support OEM/ODM services. If you are a distributor or brand owner, we can customize the battery label, packaging, and even the casing color to match your brand identity (MOQ applies).
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How waterproof is “IP65”? IP65 means the battery is totally protected against dust ingress and protected against low-pressure water jets from any direction. It is safe for rain and splashes but should not be completely submerged underwater for extended periods.
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Can I replace my lead-acid battery directly? Yes, this is a “drop-in” replacement. It follows the standard BCI Group U1 size (approx. 198x130x185mm) and uses standard M8 terminals, so it fits perfectly in most existing battery boxes for scooters, mowers, and carts.
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What is the lead time for large orders? For standard stock items, we ship immediately. For large wholesale or custom OEM orders, production typically takes 15-25 days depending on the quantity. We ensure fast turnaround times direct from the factory.
