BAK 45D 21700 Battery – High-Performance Lithium-Ion Power Cell Data Sheet Overview The BAK 45D 21700 Battery is a high-capacity lithium-ion rechargeable power cell, designed for superior performance and efficiency. With a 4500mAh capacity and a continuous discharge rate of 60A, this battery is perfect for high-drain applications, ensuring long-lasting power, stability, and durability across various demanding uses. Key Features ✅ High Capacity: 4500mAh delivers extended runtime before requiring a recharge.✅ High Discharge Rate: 60A continuous discharge, ideal for high-performance applications.✅ Lithium-Ion Chemistry: Ensures efficiency, stability, and minimal power loss.✅ Rechargeable & Durable: Engineered for multiple charge cycles with consistent power output.✅ Larger 21700 Size: Provides increased energy density compared to 18650 cells. Specifications Specification Details Brand BAK Model 45D Battery Type 21700 Capacity 4500mAh Nominal Voltage 3.6V Full Charge Voltage 4.2V Discharge Cutoff Voltage 2.5V Continuous Discharge Rate (CDR) 60A with 80C Temp Cutoff Rechargeable Yes Protected No (Unprotected cell – use with proper safety measures) Cycle Life ~600+ charge cycles Diameter 21.3mm Length 70.5mm Weight ~70g Applications The BAK 45D 21700 is widely used in high-drain applications, including: 🔋 Electric Vehicles (EVs) & E-Bikes – Delivers sustained power for extended performance.🔋 Battery Packs – Frequently used in custom battery assemblies for energy storage solutions.🔋 Power Tools – Ideal for cordless drills, saws, and other industrial tools.🔋 RC Vehicles & Drones – Provides reliable, high-output energy for demanding operations.🔋 Flashlights & Tactical Gear – Suitable for high-intensity LED flashlights and professional gear.🔋 Energy Storage Systems (ESS) – Supports solar storage and backup power applications. ⚠ Safety Guidelines & Warnings ⚠ Lithium-ion batteries require proper handling and understanding of safety precautions. Misuse can result in fire, explosion, or serious injury. General Safety Guidelines ✔ Only use if you have prior knowledge of lithium-ion battery safety.✔ Always charge on a fire-resistant surface—never leave batteries unattended while charging.✔ Use only a smart charger designed for lithium-ion batteries.✔ Store in a protective case—never carry loose batteries in a pocket, bag, or purse.✔ Keep away from metal objects (keys, coins, tools) to prevent short circuits.✔ Only use within the manufacturer’s specifications and in protected battery packs.✔ Resellers must provide these safety warnings to all customers. 🚫 Prohibited Uses & Handling ⛔ DO NOT use this battery in e-cigarettes, vaporizers, or similar devices.⛔ DO NOT mix old and new or used and unused batteries.⛔ DO NOT short circuit, puncture, crush, incinerate, or modify the battery.⛔ DO NOT use if the battery wrapper is damaged or torn.⛔ DO NOT overcharge or over-discharge—this may result in failure.⛔ DO NOT expose the battery to liquids, extreme heat, or direct sunlight.⛔ DO NOT solder directly—only use spot welding for battery pack assembly. ⚠ User Responsibility & Risk Acknowledgment The user assumes full responsibility for proper handling, charging, and storage. Misuse or mishandling may result in serious injury or damage. No guarantee of compatibility with specific devices is provided. By purchasing this battery, you acknowledge and agree to follow all safety guidelines. Stay safe and handle responsibly. 🔋