INR18650-4000D-3C 4000mAh Lithium-ion Cell

High-Drain 3C Continuous Discharge | 500 Cycles ≥80% Capacity | CID Safety Protection

The INR18650-4000D-3C 4000mAh lithium-ion cell is a high-performance cylindrical battery engineered specifically for OEM applications that demand sustained high-power output, extended operational life, and uncompromised safety. Whether you are designing next-generation power tools, electric bicycles, or portable medical devices, this 18650 cell eliminates the traditional trade-off between energy density and discharge capability, giving your end-products a distinct competitive edge in both performance and reliability.

---

🔍 Product at a Glance – Key Parameters

---

📄 Overview

For OEM buyers seeking a reliable high-drain power source, the INR18650-4000D-3C 4000mAh lithium-ion cell offers a compelling balance of capacity, safety, and cycle endurance. Engineered specifically for power tools, electric bicycles, medical devices, and portable energy storage, this 18650 cylindrical cell delivers stable 3C continuous output while maintaining strict compliance with global transport and safety regulations.

Whether you are upgrading an existing battery pack or designing a new high-drain application, this cell eliminates the trade-off between energy density and power delivery.

---

⚡ Uncompromised Capacity and 3C High-Drain Output

The INR18650-4000D-3C 4000mAh lithium-ion cell delivers a genuine 4,000mAh typical capacity – ensuring extended runtime without enlarging your battery footprint. Under high-load conditions, it maintains robust performance:

• 0.2C discharge → ≥3850mAh

• 1C discharge → ≥3650mAh

• 3C discharge (12A) → ≥3465mAh

This means your end-users experience consistent torque in cordless tools and steady throttle response in e-bikes, even under peak demand. The low ACIR (≤25mΩ) further minimizes energy loss, keeping your device cooler and more efficient during prolonged operation.

---

🔄 500-Cycle Longevity – Lower Your Total Cost of Ownership

Battery replacement is a hidden cost that impacts your brand reputation. That is why the INR18650-4000D-3C 4000mAh lithium-ion cell undergoes rigorous cycle testing:

Test Protocol: 0.5C CC-CV charge to 4.2V (cut-off 0.01C) → rest 10min → 1C discharge to 2.5V → rest 30min.

Result: After 500 complete cycles, the cell retains ≥80% of its initial capacity. For a power tool battery pack, this translates into years of dependable service, significantly reducing warranty claims and after-sales costs.

---

🛡️ CID-Protected Safety – Certified for Global Shipping

Safety is non-negotiable in overseas procurement. The INR18650-4000D-3C features a built-in Current Interrupt Device (CID) in the cap—a mechanical failsafe that permanently disconnects the circuit upon abnormal internal pressure rise. (Notably, this model is PTC-free, simplifying the protection architecture while passing all critical safety tests.)

This cell has been validated against IEC62133-2, UN38.3, UL1642, and GB31241, covering:

• Short-circuit (25°C & 55°C) – No fire, no explosion, surface temp ≤150°C

• Overcharge (3C/4.6V for 12hrs) – No fire, no explosion

• Forced discharge (1C reverse for 90min) – No fire, no explosion

• Mechanical crush (13kN), drop (1.0m), vibration & thermal shock (130°C) – All passed

With these certifications, your customs clearance and logistics are hassle-free, and your end-users gain peace of mind.

---

🌡️ Wide-Temperature Operation – Built for Diverse Climates

From freezing outdoor job sites to hot workshop environments, the INR18650-4000D-3C 4000mAh lithium-ion cell maintains reliable performance:

⚠️ Critical Reminder: Charging below 0°C is strictly prohibited to prevent internal short-circuit risks. This cell supports 0.5C charging between 15°C~45°C, and reduced current (≤0.2C) between 0°C~15°C.

---

📦 Storage, Logistics & Shelf Life

Delivered at 3.30~3.50V (approx. 30–50% SOC) – the optimal state for long-term storage. Under recommended conditions (-20°C~25°C, 60±25% RH), the cell can be stored for up to 12 months. For extended inventory, we recommend a top-up charge every six months to prevent over-discharge.

Warranty: 1 year from shipment date against manufacturing defects. Full compliance with RoHS2.0, REACH, and EU Battery Directive 2006/66/EC ensures smooth market access in Europe and North America.

---

📌 Key Applications

• High-power cordless power tools (drills, grinders, saws)

• Electric bicycles (e-bikes) and light electric vehicles

• Medical portable devices and infusion pumps

• Portable power stations and backup energy storage

• Industrial drones and robotics

---

Ordering & Support

For samples, bulk orders, or custom pack design consultation, please contact:

📧 Email: info@becellbattery.com
🌐 Website: www.becellbattery.com