12.6V 3.5A 44.1W Desktop Li-ion Battery Charger for 3S Packs | Guangdong QINX

The Guangdong QINX 12.6V 3.5A Li-ion battery charger is optimized for 3-cell lithium-ion battery systems widely used in portable electronics and embedded power solutions. The 3.5A output delivers a moderate-fast charging experience while maintaining excellent thermal stability and electrical safety.

This charger is built with an intelligent CC/CV charging algorithm specifically tailored for lithium-ion chemistry. It ensures consistent current output during the bulk charging stage and precise voltage regulation during the final stage, effectively preventing overcharging and enhancing overall battery durability.

With a universal 100–240VAC input range, the charger is suitable for global applications without additional power conversion equipment. It is widely used in OEM manufacturing environments where stable and standardized charging solutions are required for mass production.

Compared with lower-current models, this 3.5A version offers improved charging efficiency while still maintaining controlled heat output, making it suitable for medium-capacity battery packs. Guangdong QINX provides full customization options including connector types, cable length, housing design, branding, and packaging solutions.

Applications

• Portable consumer electronics
• Smart home automation systems
• Wireless communication devices
• IoT sensor modules
• Security monitoring systems
• LED backup lighting devices
• Medical portable equipment
• Compact robotics systems
• Industrial control terminals
• Embedded electronic devices

Connector Options

Available DC output connectors:

• 5.5×2.1mm barrel plug
• 5.5×2.5mm barrel plug
• 3.5×1.35mm connector
• 4.0×1.7mm connector
• 4.8×1.7mm connector
• 6.3×3.0mm connector
• USB-C output (custom option)
• Micro DC plug variants
• JST connector series
• Molex connector series
• PH/XH terminal connectors
• GX aviation connectors (GX12 / GX16 / GX20)
• XT series connectors
• Waterproof locking connectors
• Custom molded cable assemblies

Safety Design

Comprehensive protection system:

• Over-voltage protection
• Over-current protection
• Short-circuit protection
• Over-temperature protection
• Overload protection
• Surge protection
• Automatic recovery function

Certifications

Available certifications:

UL, cUL, CE, FCC, RoHS, UKCA, PSE, SAA, CB, DOE Level VI