Product Description
Product Detailed Description
High-performance Asus C42N1728 Li-Polymer 15.4V 71Wh laptop battery, engineered for wholesale and bulk customization with factory-direct pricing. This OEM-compatible replacement battery features 4-cell Li-Polymer technology, 71Wh (equivalent to ~4610mAh) capacity, and supports 500–800 charge cycles for long-lasting durability. Compatible with Asus ZenBook Pro models including UX534FT, UX580GD, UX580GE, U5500GDGE, UX550GD, UX550GE, and UX580GEX.Built with Grade A cells, CE/UL/RoHS certifications, and multi-layered safety protections (overvoltage, short circuit, overheating). Ideal for resellers, repair shops, and wholesalers seeking scalable orders (small/large batches) and custom branding/packaging options. Includes a 2-year warranty and aging-test validation for reliability.
Technical Parameters
Need a stable supply plan? Send your model list + quantities + destination. We’ll confirm lead time, shipping method, and compliance documents before you place the order.
Features & Advantages
Packing & Delivery
Lead Time & Shipping
In-stock items: Ship within 3 days
For standard replacement models with available inventory.Mass production orders: Ship within 7 days
For regular models under confirmed specifications and packaging requirements.Customized orders: Ship within 15 days
For custom cell configuration, size, wire/connector, PCB/BMS, labeling, or packaging.
Note: Final dispatch time depends on total quantity, model complexity, packaging requirements, and shipping compliance documents. We will confirm the estimated shipping date (ETD) after order confirmation.
Air freight (urgent, smaller volume)
Sea freight (cost-effective for bulk)
Rail / Truck (subject to destination)
Express channels
Documents available: UN38.3 / MSDS / Transport Test Report (if applicable)
Compliant packaging and carton labeling can be arranged based on the chosen shipping method.
EXW / FOB / CIF / DDP available
Why Choose Us As Your Wholesale Laptop Batteries Supplier?
With 10+ years in lithium battery production, 1,600+ standard & custom models, and shipments to 40+ countries, Balder Power build replacement batteries with consistent performance—ready for wholesale and OEM supply.
10+ Years Production Know-How
We’ve focused on lithium battery manufacturing for over a decade, combining practical engineering experience with stable mass-production output.
Model Coverage for Bulk Supply
We support 1600+ standard and customized battery models, helping wholesalers cover more brands and device generations efficiently.
In-House Team & Production Capability
Backed by 100+ engineers and employees, plus advanced labs and production lines, we can respond quickly to specs, compatibility issues, and OEM requests.
Automated Lines + Strict QC
Our workflow is designed for consistency: automated production lines and strict quality control from cell selection to final assembly.
OEM Compatibility Engineering (TI Protocol)
For all replacement batteries, we use 1:1 precision molds and intelligent BMS chips that follow original TI protocols, improving recognition and compatibility with the device.
Shipping-Ready for Lithium DG
We’re experienced with Class 9 DG shipments, and can provide UN38.3 & MSDS documents. For small orders we can use DG express channels; for bulk, we can support cost-effective DDP options.
Our Quality Commitment: How We Manufacture Your Laptop Batteries
At Balder Power, transparency in our manufacturing process is the foundation of our partnership with you. We adhere to rigorous industrial standards to ensure that every battery you receive is stable, safe, and high-performing.
Every single cell entering our production line must pass through strict capacity grading. We utilize high-precision grading cabinets to measure the actual capacity, internal resistance, and voltage of each cell. By grouping only perfectly matched Grade A cells, we prevent premature degradation and ensure an extended cycle life for the final battery pack.
We utilize advanced high-speed automated assembly lines to weld individual lithium cells into unified packs (e.g., 3-cell or 6-cell configurations). Laser-controlled precision welding ensures ultra-low internal resistance and uniform connectivity across all nickel tabs, providing significantly higher structural integrity and current stability than traditional manual welding.
The Battery Management System (BMS) is the brain of the battery. Our protection boards are manufactured on fully automated SMT (Surface Mount Technology) lines. This automation eliminates human error, ensuring that every safety component—from overcharge protection to short-circuit safeguards—is soldered with microscopic precision for consistent electronic stability.
Superior final assembly is critical for efficient current conduction. Our expert technicians utilize professional pulse spot-welding equipment to join the completed cell packs with the BMS boards. This process ensures low-resistance connections that can easily handle the high-wattage demands of modern laptops while remaining structurally sound under thermal stress.
Quality is found in the details. Every battery undergoes a meticulous visual inspection after assembly. Beyond checking for aesthetic defects, we use precision calipers to verify that the housing matches 1:1 OEM dimensions, ensuring a perfect fit in the laptop bay without being too tight or too loose.
Every finished battery must undergo at least two full charge-and-discharge cycles on our aging racks. During this process, we monitor voltage curves and temperature changes in real-time. Only batteries that demonstrate flawless performance under high-intensity stress tests are approved for the next stage.
Every single cell entering our production line must pass through strict capacity grading. We utilize high-precision grading cabinets to measure the actual capacity, internal resistance, and voltage of each cell. By grouping only perfectly matched Grade A cells, we prevent premature degradation and ensure an extended cycle life for the final battery pack.
The final step is specialized packaging designed for global logistics. Each battery is sealed in an Anti-Static (ESD) bag and placed within custom-fitted, shock-absorbent lining. Our packaging meets international standards for Class 9 Dangerous Goods, ensuring safe arrival and a premium unboxing experience for your retail customers.
Our lithium battery certifications
FAQ
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