This 21V 3A desktop battery charger from Guangdong QINX delivers a high-efficiency charging solution for 5-cell Lithium Li-ion battery systems. It adopts a stable constant-current/constant-voltage charging mode to ensure consistent charging behavior, helping maintain battery health while improving charging speed.
With a wide 100-240VAC universal input, the charger is suitable for global deployment and supports international device manufacturers, battery pack assemblers, and OEM/ODM electronics brands.
Compared with lower current versions, the 3A output significantly reduces charging time, making it ideal for medium-capacity battery packs used in demanding applications. The design can be tailored with different output cables, plug types, housing structures, branding, and packaging solutions according to customer requirements.
Available output connectors include 5.5×2.1mm DC plug, 5.5×2.5mm DC plug, 6.0×3.0mm plug, 4.8×1.7mm plug, 4.0×1.7mm plug, 3.5×1.35mm plug, 2.5×0.7mm plug, JST connector series, Molex connectors, XT30, XT60, GX aviation connectors, XLR connectors, Anderson Powerpole connectors, and fully customized cable assemblies.
Built-in protection systems include over-voltage protection, over-current protection, short-circuit protection, overload protection, and thermal protection to ensure safe and stable operation under all conditions.
Available with UL, cUL, CE, FCC, RoHS, UKCA, PSE, SAA, CB and DOE Level VI certifications depending on target 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. | |||
