Fogstar Energy 4000 21700 40A 4000mAh Battery

Fogstar the renowned UK battery supplier is launching their own branded batteries. These fantastic 21700 batteries offer a 4000mAh with a huge 40amp rating which is ideal for high powered devices, such as Sub Ohm or DTL (Direct to Lung) Devices.

• Manufacturer: Fogstar
• Model: FS4000
• Size: 21700
• Capacity: 4000mAh
• Maximum Discharge: 40A
• Nominal Voltage: 3.6V
• Maximum Voltage: 4.2V
• Top: Flat-Top
• Protection: None

Never carry Lithium ion batteries in pockets, bags etc this can be extremely hazardous. 

• Lithium-Ion cells should be charged on a dedicated charger rated specifically for Lithium-Ion cells. You can find our wide range of dedicated chargers here.
• 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. Our huge range of battery wraps can be found here.
• 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.