Fogstar FS4000 21700 Mod Battery

Fogstar FS4000 21700 Mod Battery

The Fogstar FS4000 21700 Mod Battery is designed for vapers seeking reliability, safety, and high performance. Offering an impressive 4000mAh capacity and a 25A continuous discharge rate, this flat-top, non-protected battery is perfect for sub-ohm vaping and high-drain applications. Its robust design makes it an ideal choice for regulated devices equipped with built-in safety features. 

Manufactured as part of Fogstar’s trusted Energy series, the FS4000 undergoes rigorous quality testing to ensure consistent performance. To maintain optimal functionality, always recharge the battery using a dedicated Lithium-Ion charger and regularly inspect wraps and insulators for damage. 

Suitable for advanced devices, the FS4000 is built to provide long-lasting power while adhering to the highest standards of safety and durability. Make sure to recycle your battery responsibly at the end of its lifecycle.

Product Features:

• Brand: Fogstar
• Battery Size: 21700
• Product Type: Mod Batteries
• Capacity: 4000mAh
• Voltage: 3.6v
• Pack Size: 1 x Battery
• Discharge Rate: 25A
• Free Postage: Free UK Shipping for orders over £20

Battery Safety Tips:

• Switch Off: Always turn off your device when not in use. Remove the battery if storing for long periods.
• Transport Safely: Carry and store batteries in non-conductive containers—never with loose change or keys.
• Avoid Shorting: Never connect the positive and negative ends of the cell, either intentionally or accidentally.
• Use the Right Charger: Always use a charger designed for Lithium-Ion cells or your device's recommended charger. For replaceable batteries, consider an external battery charger.
• Water and Heat: Keep batteries away from water and avoid exposure to extreme temperatures.
• Inspect Wraps: Regularly check for damage to the plastic wrap or insulator, and replace if necessary.
• Recycle Responsibly: Dispose of end-of-life batteries at a WEEE recycling centre or collection point.
• Prevent Over-Discharge: Avoid fully discharging batteries; most cells have a cutoff at 2.8v or 2.5v.