Fogstar Energy 4000 18650 High Capacity Battery
To be eligible:
- Item must be in the same condition as received (unworn, unused).
- Must be in its original packaging.
- You'll need your receipt or proof of purchase.
Contact us at sales@vapinloud.co.uk. If approved, we'll provide a return shipping label and instructions. Items returned without prior approval will not be accepted. For any return questions, email us at sales@vapinloud.co.uk Damages & IssuesPlease inspect your order upon arrival. If you notice any defects, damage, or the wrong item:
- Notify us immediately (within 1 working day).
- We'll evaluate and resolve it within 7 days.
- Perishable goods (e.g., E-Liquid, vape tanks/pods, mouth tips).
- Custom products (e.g., special or personalised orders).
- Sale items or gift cards.
- Return your current item (following the policy above).
- Once approved, place a new order for the desired item.
- You're responsible for return shipping costs.
- We'll process the exchange once the item is returned in original condition.
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PRODUCT DETAILS
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

