This 21V 4A charger provides a high-performance charging solution designed for 5-cell Lithium Li-ion battery configurations. It uses a precise constant-current and constant-voltage charging profile to ensure stable energy delivery, improved efficiency, and extended battery lifespan.
The unit supports a universal 100-240VAC input range, enabling global compatibility for manufacturers and system integrators across different markets. It is widely adopted in OEM battery systems, industrial electronics, and portable power applications.
Compared with lower current models, the 4A output significantly reduces charging time while maintaining controlled thermal performance. This makes it suitable for applications requiring faster turnaround and stable power management. Customization options include DC output connectors, cable length, housing color, labeling, branding, and packaging.
Available connector choices include 5.5×2.1mm DC plug, 5.5×2.5mm DC plug, 6.3×3.0mm plug, 4.8×1.7mm connector, 4.0×1.7mm connector, 3.5×1.35mm connector, 2.5×0.7mm connector, JST connectors, Molex connectors, XT30, XT60, XT90 connectors, GX aviation connectors, XLR connectors, Anderson Powerpole connectors, and fully customized cable assemblies.
Equipped with multiple protection functions including over-voltage protection, over-current protection, short-circuit protection, overload protection, and over-temperature protection to ensure safe and reliable operation.
Compliant options available with UL, cUL, CE, FCC, RoHS, UKCA, PSE, SAA, CB and DOE Level VI certifications depending on customer and market requirements.
| Series | Models | Output Voltage/Current/Power | Energy Efficiency |
| 21V 1W-420W DESKTOP Li-Ion Chargers for 5 Cells 18.5V Battery packs |
QXP-BCD-21000500 | 21V 0.5A 10.5W | VI |
| QXP-BCD-21001000 | 21V 1A 21W | VI | |
| QXP-BCD-21001500 | 21V 1.5A 31.5W | VI | |
| QXP-BCD-21002000 | 21V 2A 42W | VI | |
| QXP-BCD-21003000 | 21V 3A 63W | VI | |
| QXP-BCD-21004000 | 21V 4A 84W | VI | |
| QXP-BCD-21005000 | 21V 5A 105W | VI | |
| QXP-BCD-21006000 | 21V 6A 126W | VI | |
| QXP-BCD-21007000 | 21V 7A 147W | VI | |
| QXP-BCD-21008000 | 21V 8A 168W | VI | |
| QXP-BCD-21009000 | 21V 9A 189W | VI | |
| QXP-BCD-21010000 | 21V 10A 210W | VI | |
| QXP-BCD-21011000 | 21V 11A 231W | VI | |
| QXP-BCD-21012000 | 21V 12A 252W | VI | |
| QXP-BCD-21013000 | 21V 13A 273W | VI | |
| QXP-BCD-21014000 | 21V 14A 294W | VI | |
| QXP-BCD-21015000 | 21V 15A 315W | VI | |
| QXP-BCD-21016000 | 21V 16A 336W | VI | |
| QXP-BCD-21017000 | 21V 17A 357W | VI | |
| QXP-BCD-21018000 | 21V 18A 378W | VI | |
| QXP-BCD-21019000 | 21V 19A 399W | VI | |
| QXP-BCD-21020000 | 21V 20A 420W | VI | |
| Optional DC Connectors | 5.5*2.5, 5.5*2.1, 5.0*3.0, 4.8*1.7, 4.0*1.7, 3.5*1.35, 2.5*0.7, 6.0*3.0, 6.5*4.0, 6.5*4.4, 6.5*4.5 (6.5x1.4), 6.3*3.0, 6.0*4.4, 5.0*1.0, 5.1*7.4, 5.0*7.4, 5.5*1.7, 6.4*4.0, 6.0*3.7, Center pin, Cigarette lighter, 2pin, 3pin, Micro USB, Mini USB, RJ11, Straight Barrel, Right Angle Barrel, KPPX-3P/4P, Molex 2 pin, Molex 6 pin, XT30/XT60/XT90, M16, Alligator dip, Anderson Torberry, Audio, RCA, XLR, D-tap, IP type, GX12/16/20, Circular type, Ez-go, LP20-3pin, Stripped and Tinned Leads, Typc C, Minifit-Molex, C14, C13, 9pin "D" Type, 4 pin/prong-Din, 6-Pin Molex Connector, 4 Pin Mini Din, Aviation Plugs, 8-PIN DIN, Coaxial, Crocodile clip, M19, 2/3-Pin Terminal Blocks, Switchcraft S760K, 3 pin 4 pin XLR Female/Male, CJT C2020HF-2P, CJT C2020F-TP, GT193110-02021-XX, GT193110-02021-01, GT193119-02021-01, SAE, WJ15EDGKM-3.81-2P, open wire, GX16 2 pin aviation, CNLINKO LP20 connector LP-20-C02PE-02-004B, LP-20-C02PE-01-022 connector, LP-20-C02PE-01-024, LP-20-C03PE-01-001A, CNLINKO YA20 connector YA-20-J04PE-01-001 YA-20-C04SX-03-201...... | ||
| Email us at info@qinxpsu.com if you need customized service. | |||
