The TYPE-C Duplex 21700 Li-ion battery is a high-capacity rechargeable battery with a built-in USB Type-C duplex port, enabling both charging and discharging without the need for an external charger. Designed in the 21700 cylindrical format, it combines compact size, strong output power, and convenient plug-and-play operation. This smart battery solution is ideal for modern portable electronics, outdoor gear, and emergency backup power.
Key Advantages
Dual Function Port – Type-C duplex interface for both charging and discharging.
High Energy Density – Longer runtime compared to 18650 batteries.
Convenient Charging – Direct USB-C input eliminates special chargers.
Durable Performance – Long cycle life with stable voltage output.
Portable & Versatile – Compact design fits a wide range of devices.
Applications
Flashlights and headlampsOutdoor camping equipmentPower banks and mini fansWireless microphones and speakersEmergency backup power for electronics
Factory Support & Services
•OEM/ODM Customization – Capacity, voltage, and branding available.
•Engineering Expertise – 13+ years of battery R&D and production.
•24/7 Technical Support – Professional after-sales service worldwide.
•Fast Delivery – Local warehouses and flexible shipping solutions.
•Strict Quality Control – Every unit tested before shipment.
Packaging & Shipping
•Packaging Options: Standard paper cartons or reinforced wooden boxes.
•Shipping Methods: Sea freight, air freight, or express delivery.
•Custom Packaging: Available upon request for branding or retail display.
FAQ
Q1: Can I charge the battery with a normal USB-C cable?
Yes, it supports standard USB-C cables for charging.
Q2: Does it need a special charger?
No, the duplex Type-C port allows direct charging without an external charger.
Q3: What is the typical cycle life?
Over 500+ cycles with proper use.
Q4: Can it be customized with my logo?
Yes, Yunfan Factory provides OEM logo and capacity customization.
Q5: Is it safe for international shipping?
Yes, it complies with UN38.3 and MSDS standards for safe transport.
The TYPE-C Duplex 21700 Li-ion battery is a high-capacity rechargeable battery with a built-in USB Type-C duplex port, enabling both charging and discharging without the need for an external charger. Designed in the 21700 cylindrical format, it combines compact size, strong output power, and convenient plug-and-play operation. This smart battery solution is ideal for modern portable electronics, outdoor gear, and emergency backup power.
Key Advantages
Dual Function Port – Type-C duplex interface for both charging and discharging.
High Energy Density – Longer runtime compared to 18650 batteries.
Convenient Charging – Direct USB-C input eliminates special chargers.
Durable Performance – Long cycle life with stable voltage output.
Portable & Versatile – Compact design fits a wide range of devices.
Applications
Flashlights and headlampsOutdoor camping equipmentPower banks and mini fansWireless microphones and speakersEmergency backup power for electronics
Factory Support & Services
•OEM/ODM Customization – Capacity, voltage, and branding available.
•Engineering Expertise – 13+ years of battery R&D and production.
•24/7 Technical Support – Professional after-sales service worldwide.
•Fast Delivery – Local warehouses and flexible shipping solutions.
•Strict Quality Control – Every unit tested before shipment.
Packaging & Shipping
•Packaging Options: Standard paper cartons or reinforced wooden boxes.
•Shipping Methods: Sea freight, air freight, or express delivery.
•Custom Packaging: Available upon request for branding or retail display.
FAQ
Q1: Can I charge the battery with a normal USB-C cable?
Yes, it supports standard USB-C cables for charging.
Q2: Does it need a special charger?
No, the duplex Type-C port allows direct charging without an external charger.
Q3: What is the typical cycle life?
Over 500+ cycles with proper use.
Q4: Can it be customized with my logo?
Yes, Yunfan Factory provides OEM logo and capacity customization.
Q5: Is it safe for international shipping?
Yes, it complies with UN38.3 and MSDS standards for safe transport.