Power your vaping experience with the Fogstar Energy 4000 18650 battery – engineered for reliability, safety, and long-lasting performance. With a massive 4000mAh capacity and consistent 10A discharge, this premium flat-top cell delivers the power you need for extended vaping sessions.

🔋 Key Features

High Capacity: 4000mAh for extended use between charges
Reliable Performance: 10A maximum continuous discharge
Premium Quality: Manufactured by Fogstar to exacting standards
Standard 18650 Size: Compatible with most regulated mods
Flat-Top Design: Ideal for devices requiring flat-top cells
Fully Certified: UN38.3, Specification Reports & MSDS available upon request
Safe Chemistry: 3.6V nominal voltage, 4.2V maximum

📋 Technical Specifications

Manufacturer	Fogstar
Model	FS4000
Size	18650
Capacity	4000mAh
Maximum Discharge	10A
Nominal Voltage	3.6V
Maximum Voltage	4.2V
Top Type	Flat-Top
Protection	None (use with regulated devices only)

⚠️ Important Safety Information

Please read carefully before use:

Never carry loose batteries – always use the protective case provided
Charge only with dedicated Lithium-Ion battery chargers
Never leave batteries unattended while charging
Keep away from children and animals
Inspect wraps and insulators regularly for damage
Replace or dispose of batteries with damaged wraps immediately
Do not crush, incinerate, or modify batteries
Use only within manufacturer specifications
Expected cycle life: 200-500 charges before capacity degradation

❓ Frequently Asked Questions

Q: Is this battery suitable for my vape mod?
A: The Fogstar Energy 4000 is compatible with most regulated mods that accept 18650 flat-top batteries. Always check your device specifications before purchasing.

Q: How long will this battery last between charges?
A: With 4000mAh capacity, you can expect all-day performance for most users. Actual runtime depends on your device wattage and vaping habits.

Q: Can I use this battery in a mechanical mod?
A: This battery has no built-in protection circuit and is designed for use in regulated devices only. For mechanical mods, ensure you understand Ohm's law and battery safety.

Q: What charger should I use?
A: Use a dedicated Lithium-Ion battery charger from reputable brands. Never charge via USB directly in your mod for optimal battery longevity.

Q: How do I know when to replace my battery?
A: Replace batteries when you notice significantly reduced runtime, damaged wraps, or after 200-500 charge cycles. Always recycle old batteries responsibly.

Q: Are certification documents available?
A: Yes! UN38.3, Specification Reports, and MSDS documentation are available upon request for wholesale or compliance purposes.

✓ Premium Quality | ✓ Fully Certified | ✓ Trusted Performance

Fogstar Energy 4000 18650 High Capacity Battery