MOLICEL 21700 P42A 45A 4200MAH FLAT TOP 21700 BATTERY

The Molicel P42A 21700 4200mAh 45A Flat Top Battery is a rechargeable lithium-ion cell developed for applications requiring high current output alongside useful energy capacity. Its 21700 form factor offers a larger cylindrical format than an 18650 cell, making it an option for compatible custom battery packs, power tools, and high-performance electronics.

With a typical capacity of 4200mAh and a maximum continuous discharge rating of 45A, the INR-21700-P42A is designed for demanding electrical loads when used within the manufacturer's specifications. The flat-top terminal is intended for compatible battery holders or professionally assembled packs.

Features

• 4200mAh typical capacity: Provides 15.5Wh of nominal energy.

• High-current output: Rated for up to 45A maximum continuous discharge under the specified operating conditions.

• 21700 cylindrical format: Measures up to approximately 21.7mm in diameter and 70.2mm in height.

• Flat-top terminal: Suitable for compatible battery holders and pack designs.

• Rechargeable lithium-ion chemistry: Supports repeated use with an appropriate charging system.

• 3.6V nominal voltage: Designed for systems compatible with this cell voltage.

• Molicel P42A model: Identified by manufacturer model number INR-21700-P42A.

Applications

• Custom lithium-ion battery pack assembly

• Compatible high-power tools and equipment

• Portable power systems designed for 21700 cells

• Robotics and electronics projects with suitable battery protection

• Electric mobility and other high-current applications where the cell is approved for the intended use

How to Use

1. Check compatibility: Confirm that the device or battery pack supports 21700 cells, 3.6V nominal voltage, and the required current.

2. Use suitable protection: Integrate an appropriately designed battery management system (BMS) and other required protective components in pack applications.

3. Charge correctly: Use a charger specifically designed for lithium-ion cells, with a maximum charging voltage of 4.2V per cell and a standard charging current of 4.2A.

4. Install securely: Ensure the flat-top terminal fits the holder or pack design and that the cell cannot move, short-circuit, or become damaged.

5. Monitor operating conditions: Stay within the manufacturer's voltage, current, and temperature limits.

Important Notes

• This is a bare, unprotected cell, not a complete battery pack. It does not include a built-in BMS or protection circuit.

• Do not short-circuit, crush, puncture, disassemble, or expose the cell to fire or excessive heat.

• Never exceed the 4.2V charging limit or discharge below the manufacturer's 2.5V cut-off specification.

• The 45A rating is a maximum continuous discharge specification, not a guarantee that every device or battery assembly can safely draw 45A. Thermal management, connections, wiring, and protection design are essential.

• Use appropriate insulation and cell holders or professional pack-assembly methods. Avoid direct soldering to the cell unless using a manufacturer-approved process.

• Keep the cell away from loose metal objects that could bridge its terminals.

Package Includes

- 1 × Molicel INR-21700-P42A 4200mAh 45A Flat Top Lithium-Ion Battery