The QINXPOWER® 84W 21V 4A (4000mA) AC to DC battery charger is designed for electronic devices powered by 5S 18.5V Lithium Li-ion batteries, delivering stable output, high efficiency, and reliable long-term performance. Using a CC/CV charging profile, this charger ensures safe, fast, and consistent charging while protecting battery health.
It supports 5.5×2.1mm or 5.5×2.5mm DC connectors, providing wide compatibility with industrial electronics, portable equipment, and lithium-powered systems. With universal 100–240V AC input, this charger is suitable for global use. As a QINXPOWER® factory-direct product, full OEM/ODM customization is available, including plugs, cables, labels, and housings
| Series | Models | Output Voltage/Current/Power | Energy Efficiency |
| 21V Desktop Battery Chargers for 5S rechargeable battery packs | QXP-BCD-21000500 | 21V 0.5A 10.5W | VI |
| QXP-BCD-21001000 | 21V 1A 21W | VI | |
| QXP-BCD-21001300 | 21V 1.3A 27.3W | VI | |
| QXP-BCD-21001500 | 21V 1.5A 31.5W | VI | |
| QXP-BCD-21002000 | 21V 2A 42W | VI | |
| QXP-BCD-21002500 | 21V 2.5A 52.5W | VI | |
| QXP-BCD-21003000 | 21V 3A 63W | VI | |
| QXP-BCD-21004000 | 21V 4A 84W | VI | |
| QXP-BCD-21004760 | 21V 4.76A 100W | 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 | 21 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 | |
| Email us at info@qinxpsu.com if you need customized service. | |||
