The **GeB YM Pro 52V 17.5AH Battery** is the culmination of meticulous engineering, designed to power the most demanding e-bike conversions and factory builds. By adopting the high-voltage **52V platform**, this battery dramatically reduces the amperage needed to achieve high power output, resulting in significantly lower heat generation across the entire electrical system. This efficiency gain directly translates into a palpable increase in motor responsiveness and a reduced strain on the controller, thereby extending the lifespan of your e-bike components. The total energy capacity sits at approximately 910 Watt-Hours (Wh), ensuring exceptional range for long-distance commuting and adventurous trail riding.
At the heart of the YM Pro lies premium cell technology. The 17.5AH version is built using high-density LG/Samsung 18650-3.5AH cells, chosen for their industry-leading cycle life, safety profile, and ability to deliver consistent current under load. The cells are configured in a precise **14 Series, 5 Parallel (14S5P) permutation**—the optimal arrangement for stable 52V nominal voltage and capacity retention throughout thousands of charge cycles. This careful configuration guarantees a steady power curve down to the **39.2V cut-off limit**, safeguarding the cells against deep discharge damage.
The battery features a professional-grade, high-quality **25A Battery Management System (BMS)**. This internal safeguard is essential for safely supporting e-bike motors ranging from **250W up to 750W**, providing instantaneous protection against overcurrent, short-circuit, over-temperature, and voltage irregularities. The exterior casing offers a robust, integrated downtube design, ensuring both security and aesthetic appeal. For convenience, the unit is fitted with versatile **DC5521/DC5525/3Pin Charge Ports** and a dedicated **4Pin Discharge Port**. The entire package weighs only **4.7Kg**, making it an efficient choice for performance weight management.
GeB is not merely an assembly line; we are a dedicated power solution provider with **sixteen years of concentrated expertise** in lithium battery manufacturing. Our long-standing reputation as a specialist ensures that our products, including the YM Pro series, stand miles apart from generalized competitors. This singular focus has allowed us to perfect every stage of the battery lifecycle—from raw material sourcing and rigorous testing to final assembly and quality auditing. We are battery experts, and our legacy is built on the performance and safety of the power we deliver.
Our manufacturing facility operates under stringent global quality management standards. The production process for the YM Pro, for example, involves multiple precision steps: First, all incoming cells are subjected to rigorous **capacity and impedance matching** to ensure homogeneous pack performance. Second, **automated, high-precision spot welding** with pure nickel strips guarantees optimal current flow and durability, minimizing resistance and heat buildup. Third, the custom-developed BMS is programmed and installed to provide multi-level redundancy in protection. Finally, every finished battery undergoes a comprehensive **100% discharge and charge stress test** before packaging, ensuring that the advertised capacity and safety features are validated for immediate use.
GeB maintains robust supply chain integrity by exclusively partnering with globally recognized, Tier 1 cell manufacturers. This commitment eliminates the risk of counterfeit or substandard components that plague cheaper batteries. Our extensive manufacturing history allows us to offer scalable solutions, reliable lead times, and expert technical support to major e-bike manufacturers and distributors worldwide. We provide documentation and compliance certifications that meet various regional market standards, making us the trusted choice for international business. We earnestly invite partners to **schedule a factory audit** to observe the dedication and precision of our lithium specialists firsthand, solidifying the confidence in the GeB brand.
| Parameter | 48V 17.5AH | 52V 17.5AH | 48V 15AH | 52V 15AH |
|---|---|---|---|---|
| Nominal Voltage | 48V | 52V | 48V | 52V |
| Nominal Capacity | 17.5AH | 17.5AH | 15AH | 15AH |
| Cell Capacity | 18650-3.5AH | 18650-3.5AH | 21700-5.0AH | 21700-5.0AH |
| BMS Current | 25Amp | |||
| Max Motor Power | 250-750W | |||
| Cut-off Voltage | 36.4V | 39.2V | 36.4V | 39.2V |
| Charge Current | 2-3A | 3-5A | ||
| Battery Weight | 4.5Kg | 4.7Kg | 3.9Kg | 4.1Kg |
| Discharge Port | 4Pin | |||
Experience the reliability of a specialist. Choose the GeB YM Pro Series.