Key Features
- 4500mAh High Capacity: Delivers extended runtime for demanding, high-drain applications.
- 45A Continuous Discharge: Engineered to sustain extreme current output with an 80°C temperature cut-off.
- Low Internal Resistance: Advanced chemistry ensures efficient power transfer and minimal voltage sag.
- 21700 Flat Top Format: Optimized for modern battery pack designs requiring high energy density.
- Molicel Quality Assurance: Manufactured in Taiwan under strict quality control standards.
Overview
The Molicel P45B 21700 lithium-ion battery represents a significant advancement in high-performance cell technology. Featuring a robust 4500mAh nominal capacity and an industry-leading 45A maximum continuous discharge rating, this cell is designed for applications that demand both sustained power and long runtime. Its low internal resistance and stable voltage characteristics make it an ideal choice for professionally engineered battery systems utilizing external protection.
Applications / Uses
- High-current battery pack assemblies
- Industrial and commercial power systems
- Power tools and high-load electronics
- Engineering, testing, and validation environments
- Advanced portable energy storage solutions
Specifications
| Manufacturer: | Molicel |
| Model: | P45B |
| Size: | 21700 |
| Positive Terminal: | Flat Top |
| Nominal Capacity: | 4500mAh |
| Continuous Discharge Rating (max): | 45A (80°C temperature cut-off) |
| Nominal Voltage: | 3.6V |
| Maximum Voltage: | 4.2V |
| Discharge Cut-off Voltage: | 2.5V |
| Protected: | No |
| Rechargeable: | Yes |
| Approx. Dimensions: | 21.55mm x 70.15mm (Max) |
| Approx. Weight: | 70g (Max) |
⚠ Important Safety Warnings
Improper handling or misuse of this lithium-ion battery can result in FIRE, EXPLOSION, or THERMAL RUNAWAY, causing personal injury, property damage, or death. Users must read and follow all safety guidelines before purchase and use. Click here to review the full safety guidelines.
- Critical Warning: Never carry loose batteries in your pocket, purse, or bag. Loose batteries can come into contact with metal objects like keys or coins, causing a short circuit, which may result in severe burns, fire, or explosion. Always store or transport batteries in a protective case.
- Intended Use: This battery is designed for integration into protected battery packs with a Battery Management System (BMS) or Protection Circuit Board (PCB). It is not intended for standalone use or for e-cigarettes, vaporizers, or similar devices.
-
Thermal Runaway: A chain reaction where heat from a failing battery
causes further overheating, potentially leading to fire or explosion.
- Causes: Overcharging, short circuits, physical damage, or exposure to high temperatures.
- Prevention: Use a smart charger, avoid damage, and store batteries in a cool, dry place.
- Storage & Transport: Always store batteries in protective cases to prevent accidental contact with metal objects. Never store loose batteries in pockets, purses, bags, or near conductive materials.
- Inspection: Do not use if the PVC wrapper, terminal insulator, or casing is damaged, dented, leaking, or bulging. Continued use could result in failure, fire, or explosion.
- Charging: Use a smart charger specifically designed for lithium-ion batteries and ensure the charger's voltage matches the battery's specifications. Never overcharge, over-discharge, or leave unattended while charging.
-
Prohibited Activities:
- Do not expose the battery to extreme heat, fire, or liquids.
- Do not short circuit, puncture, crush, or modify the battery.
- Do not charge or discharge beyond the manufacturer’s voltage range.
- Do not dispose of in regular trash—always recycle at approved facilities.
- Emergency Response: If a cell shows signs of thermal runaway (e.g., smoke, swelling, hissing, or heat), stop use immediately and, if it can be done safely, move it to a non-flammable surface (e.g., concrete or sand) away from combustible materials. Lithium-ion cells burn as Class B fires — use an ABC / dry-chemical fire extinguisher, or douse with large amounts of water to cool the cell and prevent the fire from spreading. Do not rely on a small spray; thorough cooling is required, and cells can reignite from residual heat, so monitor the area afterward. (Class D extinguishers are intended for lithium-metal batteries, not lithium-ion.) For any fire beyond a single small cell, evacuate and call emergency services.
Disclaimer
18650Battery.com is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Lithium-ion batteries require strict adherence to all safety protocols. It is the reseller's responsibility to ensure all safety warnings and product guidelines are effectively communicated to customers. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.