Dual 21700 Battery 8000 mAh Portable Fan Specifications

Dual 21700 battery portable fans are compact, high-capacity cooling devices designed for portability and extended use. These fans utilize two 21700 lithium-ion cells, known for their superior energy density and longer lifespan compared to traditional battery types. Buyers often consider these fans for their balance of power, runtime, and portability. As an OEM/ODM manufacturer based in Dongguan, Guangdong, China, XMT Global (Xinmeili Technology) specializes in producing these fans with a production capacity of 150,000+ units per month and a 3,000+ facility serving over 30 export markets.

Key Specifications of an 8000 mAh Dual 21700 Battery Portable Fan

The 8000 mAh capacity variant of dual 21700 battery portable fans is a popular choice for users seeking longer runtimes without frequent recharging. Key specifications include:

• Battery Capacity: 8000 mAh (2 x 4000 mAh cells)
• Fan Speeds: Typically 3 to 5 adjustable settings
• Runtime: 8-12 hours on the lowest setting, 3-5 hours on the highest setting
• Charging Time: Approximately 4-6 hours with a standard 2A charger
• Weight: Usually between 300-400 grams, depending on materials and additional features
• Materials: Often constructed with durable ABS plastic and metallic finishes

Battery Specifications and Performance

The 21700 battery type is a critical component of these portable fans, offering several advantages:

• Energy Density: Higher than 18650 batteries, allowing for more power in a similar form factor.
• Recharge Cycles: Typically supports over 500 recharge cycles, ensuring a longer lifespan.
• Safety Features: Built-in protection circuits guard against overcharging, over-discharging, and short circuits.

Compared to other battery types, such as 18650 or AA/AAA, 21700 batteries provide a more efficient power solution for portable fans, as detailed in the table below:

Selection Criteria for OEM Sourcing

When selecting a dual 21700 battery portable fan for OEM sourcing, buyers should consider the following criteria:

• Battery Capacity and Type: Ensure the battery capacity meets the desired runtime and that the type (21700) is suitable for the intended use.
• Recharge Time and Cycle Life: Evaluate the recharge time and the number of recharge cycles to ensure longevity and user satisfaction.
• Fan Speed Settings and Runtime: Consider the number of speed settings and the corresponding runtimes to match user preferences.
• Build Quality and Materials: Assess the build materials and overall quality to ensure durability and aesthetic appeal.
• Compliance with International Safety Standards: Verify that the product complies with relevant safety standards such as CE, RoHS, FCC, UN38.3, UKCA, CCC, PSE, and KCC.
• Production Capacity and MOQ: Buyers should confirm with the supplier regarding the minimum order quantity (MOQ) of 500 units and a lead time of 15 days.

Common Technical Comparisons

Buyers often compare dual 21700 battery portable fans with other types of portable fans, such as those using 18650 or AA/AAA batteries. The table below highlights some key differences: