Fogstar Energy FS4000 21700 4000mAh Battery

The Fogstar Energy FS4000 21700 Battery is built for vapers who demand top-tier performance and reliability. Featuring an impressive 4000mAh capacity and a robust 25A continuous discharge rate, this rechargeable battery is ideal for high-powered and advanced vaping devices.

Designed with safety and durability in mind, the FS4000 21700 is a flat-top, non-protected battery that is ideal for use in regulated devices equipped with built-in safety features, such as vape kits, allowing it to deliver optimal performance without compromise. Always verify compatibility with your device before use. As part of Fogstar’s trusted Energy series, the FS3000 undergoes stringent testing to meet high-quality standards. To ensure safe operation, recharge the battery using a dedicated Lithium-Ion charger, regularly inspect wraps and insulators for damage, and replace any compromised batteries immediately. 

Additional Information
• Only use according to the manufacturer’s instructions.
• Lithium-Ion cells should be charged on a dedicated charger rated specifically for Lithium-Ion cells.
• Never leave a battery unattended whilst charging.
• Keep away from animals and children.
• Wraps and insulators should be periodically inspected for tears or damage. If a battery has a damaged wrap, it should be repaired or disposed of immediately.
• Batteries usually have a cycle life of between 200-500 cycles (this varies with manufacturer) before noticeable capacity drop-off. Batteries should be recycled at this time.
• Do not crush, incinerate or modify.