Fogstar Energy 3800 18650 10A 3800mha Battery

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Product image
Variant Name
18650
Battery Size
18650
3800mAh
Battery Capacity
3800mAh
10 Amp
Discharge
10 Amp
3.6V
Voltage
3.6V
  • Description
  • Reviews
  • Delivery

The Fogstar Energy 3800 18650 Battery is a premium lithium-ion cell built for power users who demand performance and reliability. From the trusted manufacturer Fogstar, this battery delivers an impressive 3800mAh capacity with a steady 10A maximum discharge—ideal for a wide range of high-drain electronic devices.

Unmatched Battery Capacity

3800mAh High-Capacity Cell

Experience extended power with the Fogstar FS3800. This battery offers a longer runtime compared to standard 18650 cells, making it perfect for energy-intensive applications.

Reliable and Safe Discharge

Stable 10A Max Discharge

Engineered for consistent performance, this battery safely supports up to 10A continuous discharge, providing the ideal balance between capacity and power output.

Description Details

The Fogstar FS3800 features a flat-top design for universal compatibility and a nominal voltage of 3.6V (max 4.2V). This unprotected cell is best suited for experienced users with compatible devices and proper charging equipment. With a typical cycle life of 200–500 cycles, it offers longevity when used correctly.

Why Choose This Product?

  • Massive 3800mAh capacity for extended use
  • Stable 10A discharge rate for performance reliability
  • Manufactured by trusted brand Fogstar

Revolutionary Technology

The FS3800 is developed using high-grade lithium-ion technology that enables consistent energy output and superior charge retention. These cells meet rigorous safety and performance standards with documentation like UN38.3 and MSDS available on request.

Convenience and Everyday Use

This battery is ideal for users who value portability and efficiency. Whether you're powering flashlights, vapes, or other electronics, the Fogstar Energy 3800 delivers dependable energy. Always pair with a dedicated Li-ion charger for safe usage.

What’s in the Box?

  • 1 x Fogstar Energy 3800 18650 Battery
  • Optional: Custom Battery Wrap (select design)

Power Your Devices with Confidence

Choose the Fogstar Energy 3800 18650 Battery for superior energy, trusted safety, and extended device operation. Add it to your basket now and experience dependable power!

  • All orders are sent in discreet packaging.
  • Delivery is free for all orders over £50. Otherwise, delivery is £3 to £12 depending on the service you plan to purchase.
  • You can return your product up to 14 days after receiving your order. Please make sure that the products are not used or damaged.

UK Shipping

Service Overview: Reliable tracked delivery service.

Delivery Time: 2 to 4 working days.

Key Features:

  • Tracked to delivery point.
  • Same day dispatch Monday to Friday for orders placed before 2:30 PM (excluding Bank Holidays).
  • Deliveries are made weekdays and on Saturday.
  • NOT GUARANTEED SERVICE

Cost: £3.00 (Free over £50)

Service Overview: Fast, door-to-door courier service.

Delivery Time: Next day for most UK postcodes. View postcode exclusions

Key Features:

  • Full end-to-end tracking with live updates.
  • Same-day dispatch Monday to Friday for orders placed before 1:00 PM (excluding Bank Holidays).
  • Deliveries made on weekdays (some areas deliver Saturday).
  • Signature required on delivery.
  • Battery Restrictions: None: DPD imposes no additional restrictions on batteries.
  • NOT GUARANTEED SERVICE

Cost: £3.50 (Free over £50)

Service Overview: Parcels are delivered to a nearby DPD Pickup Point or Drop-Point for customer collection.

Delivery Time: Next day for most UK postcodes. View postcode exclusions

Key Features:

  • Notifications sent via email/SMS when parcel is ready for collection.
  • No signature required—customer collects in person.
  • Ideal if you’re not available at home for doorstep delivery.
  • Battery Restrictions: None: DPD imposes no additional restrictions on batteries.
  • NOT GUARANTEED SERVICE

Cost: £3.50 (Free over £50)

Service Overview: Reliable standard delivery service.

Delivery Time: 2 working days.

Key Features:

  • Tracked to delivery point.
  • Same day dispatch Monday to Friday for orders placed before 2:00 PM (excluding Bank Holidays).
  • Deliveries are made weekdays.

Cost: Price Based On Address

Service Overview: Faster tracked delivery service.

Delivery Time: Up to 1 to 2 working days.

Key Features:

  • Tracked to delivery point.
  • Same day dispatch Monday to Friday for orders placed before 2:30 PM (excluding Bank Holidays).
  • Deliveries are made weekdays and on Saturday.
  • NOT GUARANTEED SERVICE

Cost: £4.00

Service Overview: A cost-effective express service for less time-sensitive deliveries.

Delivery Time: Next business day delivery by the end of the day to most UK destinations.

Key Features:

  • Lower-cost option compared to UPS Express®.
  • Includes tracking and proof of delivery.
  • Suitable for urgent but not time-critical shipments.

Cost: Price Based On Address

Service Overview: Guaranteed next-day delivery service.

Delivery Time: Next day.

Key Features:

  • Tracked to delivery point.
  • Same day dispatch Monday to Friday for orders placed before 2:30 PM (excluding Bank Holidays).
  • Deliveries are made weekdays and on Saturday.

Cost: £9.00

Service Overview: A time-definite delivery service for urgent shipments.

Delivery Time: Next business day delivery by 10:30 AM or 12:00 PM to most UK locations.

Key Features:

  • Ideal for time-critical shipments.
  • Includes tracking and proof of delivery.
  • Money-back guarantee if the delivery commitment is not met.

Cost: Price Based On Address

International Shipping

Delivery Time: 3-10 working days.

Key Features:

  • Tracked to delivery point.
  • Same day dispatch Monday to Friday orders placed before 2:30 PM (excluding Bank Holidays).
  • Deliveries are made weekdays.
  • NOT GUARANTEED SERVICE
  • Delays caused by Customs are completely out with our control.

Cost: Price Based On Weight + Address

Delivery Time: 3-10 working days.

Key Features:

  • Tracked to delivery point.
  • Same day dispatch Monday to Friday orders placed before 2:30 PM (excluding Bank Holidays).
  • Deliveries are made weekdays.
  • NOT GUARANTEED SERVICE
  • Delays caused by Customs are completely out with our control.

Cost: Price Based On Weight + Address

Delivery Time: 2-4 working days.

Key Features:

  • Tracked to delivery point.
  • Same day dispatch Monday to Friday orders placed before 2:00 PM (excluding Bank Holidays).
  • Deliveries are made weekdays.
  • Delays caused by Customs are completely out with our control.

Cost: Price Based On Address

Delivery Time: Next Business Day EU.

Key Features:

  • Tracked to delivery point.
  • Same day dispatch Monday to Friday orders placed before 2:00 PM (excluding Bank Holidays).
  • Deliveries are made weekdays.
  • Delays caused by Customs are completely out with our control.

Cost: Price Based On Address

Delivery Time: Next Business Day EU By 10:30am.

Key Features:

  • Tracked to delivery point.
  • Same day dispatch Monday to Friday orders placed before 2:00 PM (excluding Bank Holidays).
  • Deliveries are made weekdays.
  • Delays caused by Customs are completely out with our control.

Cost: Price Based On Address

Delivery Time: 2 Business Day.

Key Features:

  • Tracked to delivery point.
  • Same day dispatch Monday to Friday orders placed before 2:00 PM (excluding Bank Holidays).
  • Deliveries are made weekdays.
  • Delays caused by Customs are completely out with our control.

Cost: Price Based On Address

Delivery Time: 1-2 Business Day.

Key Features:

  • Tracked to delivery point.
  • Same day dispatch Monday to Friday orders placed before 2:00 PM (excluding Bank Holidays).
  • Deliveries are made weekdays.
  • Delays caused by Customs are completely out with our control.

Cost: Price Based On Address

Fogstar Energy 3800 18650 10A 3800mha Battery FAQ

The battery has a capacity of 3800mAh, offering longer runtimes for high-drain devices.
No, this is an unprotected flat-top cell and should be used with compatible devices and chargers.
The battery supports a maximum continuous discharge rate of 10A.
Yes, UN38.3, Specification Reports, and MSDS documents are available upon request.
Always use a dedicated charger rated specifically for lithium-ion cells. Never leave the battery unattended while charging.

Price Match Promise



Vaping 101 offers the lowest prices in the UK guaranteed. We constantly check our prices against competitors to offer our customers the best deal available.

If you find a price cheaper elsewhere in the UK (in stock), please just let us know. Fill out the contact form on our website and we will send you a unique discount code.

Batteries are not part of the price match.

***Please note, evidence of a cheaper price is required (a link to the price). Unfortunately, we do not offer this guarantee on sites like eBay, Amazon, etc. This is simply due to difficulty knowing if items are genuine. Must be a legitimate UK-based website operating within UK Law for comparison. Price match items must be in stock and like-for-like. Must be an advertised price.

All items on Vaping 101 are genuine manufactured originals.

Any questions, please don't hesitate to contact us.

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