16.8V 20A 336W Desktop Battery Charger with PFC for 4S Lithium Li-ion Battery Packs | Guangdong QINX Technology Co., Ltd.

Purpose-built for 4-cell Lithium Li-ion battery packs, this 16.8V 20A desktop charger adopts a precision multi-stage CC/CV charging design that automatically regulates charging voltage and current according to battery conditions. This intelligent charging method promotes efficient energy transfer, maintains charging stability and helps maximize battery cycle life.

With an output power of 336W, the charger incorporates Active Power Factor Correction (PFC) to improve input power utilization, reduce harmonic interference and deliver higher overall power efficiency. Its universal 100–240VAC input enables reliable operation across international power grids, making it suitable for worldwide deployment.

Guangdong QINX Technology Co., Ltd. offers comprehensive OEM and ODM manufacturing services, including customized DC output cables, connector types, enclosure colors, private logo printing, product labels and retail packaging. Tailored electrical specifications are also available to meet different battery charging requirements.

The 20A output current is particularly suitable for large-capacity 4S Lithium Li-ion battery packs used in professional equipment requiring high-current charging and dependable long-term performance.

Applications

• Industrial autonomous mobile robots (AMRs)
• Portable battery energy storage units
• Heavy-duty inspection equipment
• Smart factory automation terminals
• Professional mobile broadcasting systems
• Battery-powered construction instruments
• Commercial service robots
• Portable power support equipment

Connector Options

Optional output connectors include 5.5×2.1mm, 5.5×2.5mm, XLR 3-pin and 4-pin connectors, GX16 and GX20 aviation connectors, XT60, XT90, EC5, Anderson Powerpole, SB50, Power DIN connectors, Molex connectors, JST connectors and customized cable assemblies.

Safety Design

Equipped with comprehensive protection functions, including over-voltage protection, over-current protection, overload protection, short-circuit protection and over-temperature protection. The integrated Active PFC circuit further enhances electrical efficiency and ensures stable operation during high-power charging.

Certifications

Available with UL, cUL, SAA, PSE, UKCA, CE, RoHS, FCC, DOE Level VI and CB certifications, meeting international safety, EMC and energy efficiency requirements.