21V 18A Desktop Battery Charger with PFC for 5S Lithium Li-ion Battery Packs | Guangdong QINX

The 21V 18A desktop charger from Guangdong QINX is engineered to support rechargeable 5-cell Lithium Li-ion battery systems used in professional and industrial environments. Utilizing a controlled constant-current and constant-voltage charging process, the charger delivers stable output characteristics that help support battery longevity and dependable operation.

Equipped with Active Power Factor Correction (PFC), this charger achieves improved energy efficiency and optimized AC input performance. Its universal 100-240VAC input range allows deployment across global markets without requiring additional voltage adaptation.

With a powerful 378W charging capacity, this model is suitable for larger battery packs where rapid charging and reduced equipment downtime are important. OEM customization options include connector selection, cable length, product labeling, enclosure modifications and retail packaging solutions tailored to customer specifications.

Applications

• Portable power storage units
• Battery-operated industrial equipment
• Smart inspection systems
• Robotic automation devices
• Wireless communication terminals
• Mobile surveillance equipment
• Electric maintenance tools
• Emergency energy backup solutions

Connector Options

Optional output connectors include 5.5×2.1mm DC plug, 5.5×2.5mm DC plug, 6.5×4.4mm connector, GX12/GX16 aviation connectors, 3-pin XLR, 4-pin XLR, Anderson Powerpole connectors, XT60 connectors, XT90 connectors, SAE connectors, Molex connectors, JST connectors and customized wiring harnesses.

Safety Design

Designed with multiple safety mechanisms including short-circuit protection, over-current protection, overload protection, over-voltage protection, thermal protection and charging status indicators to ensure secure charging performance.

Certifications

Available with UL, cUL, CE, FCC, RoHS, UKCA, PSE, SAA, CB and DOE Level VI certifications according to project requirements and target market regulations.