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
- Manufacturer: Fogstar
- Model: FS4000
- Size: 18650
- Capacity: 4000mAh
- Maximum Discharge: 10A
- Nominal Voltage: 3.6V
- Maximum Voltage: 4.2V
- Top: Flat-Top
-
Protection: None
Supporting documents are available upon request (UN38.3, Specification Reports & MSDS)
Lithium-Ion batteries should never be kept loose in your pocket or purse. Always use the case provided.
- 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.
- If you are re-selling these cells, it is your duty to pass these warnings onto your customers.
- Batteries usually have a cycle life of between 200-500 cycles (varies with manufacturer) before noticeable capacity drop off. Batteries should be recycled at this time.
- Do not crush, incinerate or modify.
- Only use within manufacturers specification.

