The HGC173 series products integrate embedded microcomputer control technology with mature charging technology, and have the characteristics of powerful functionality, practicality, and high intelligence. Real time monitoring of the rate of change in battery charging current and voltage throughout the entire charging process, automatic adjustment of corresponding charging parameters, and intelligent recognition of charging completion; Adopting LCD display screen with full Chinese language display; Not only does it have a complete human-machine interface, clear and easy to understand display, but it is also easy to operate; There are four charging modes to choose from, suitable for charging various acidic and alkaline batteries for different purposes.

Constant current, constant voltage, small constant current charging mode:
Suitable for charging lead-acid batteries. The entire charging process adopts a three-stage control method of constant current, constant voltage, and small constant current. In the initial stage of charging, the battery has a strong acceptance capacity and is charged with a large constant current. However, in the later stage of charging, the battery's acceptance capacity weakens, so it automatically switches to constant voltage charging. The charging current gradually decreases as the battery's stored capacity increases. When the final current decreases to 1/4 of the rated current, it automatically switches to small constant current charging until it is fully charged and automatically shuts down.  
Constant current and constant voltage charging mode:
Suitable for charging alkaline and maintenance free batteries. The entire charging process adopts a two-stage control method of constant current and constant voltage. In the initial stage, the battery has a strong acceptance capacity and is charged with a large constant current. However, in the later stage, the acceptance capacity of the battery weakens and it automatically switches to constant voltage charging. The charging voltage remains unchanged, and the charging current gradually decreases with the deepening of the battery charging amount until it is fully charged and automatically shuts down.  
• (Constant current and constant voltage) float charging mode:
Suitable for charging batteries with long-term float charging in various uninterruptible power supplies. It has a self starting function for incoming calls. After powering on again, it first goes through the entire charging process of "constant current and constant voltage" mentioned above, and then automatically switches to a long-term float charging state.  

Initial charging mode:
Suitable for initial charging of new batteries. Adopting a two-stage charging method with constant current. The initial battery has a strong acceptance capacity and uses a larger current for the first stage of constant current charging; In the later stage, the battery's acceptance capacity weakens, and the current value automatically halves, allowing for second-order constant current charging. Automatically shut down after the entire charging time is completed.

Complete equipment functions:
Real time display of working modes, various charging parameters, and fault information on the LCD screen;  
High brightness LED indicates the operating status and fault alarm of the device;  
• It has the functions of automatic detection, delayed start, soft start, and soft shutdown;  
• It has fault protection and alarm functions for open circuit, reverse connection, overload, overheating, etc;  
• Equipped with automatic gear shifting function: For devices with a wide range of charging voltages, in order to improve the efficiency of the charger, the main transformer is divided into multiple output levels and can automatically switch gears according to the voltage of the battery connected by the user, without the need for personnel operation;  
Unplug the charging plug during charging and the charger will automatically shut down.  
• Equipped with charging information recording function.  
The system can remember the parameters set by the user for a long time and will not lose them even during power outages. After setting the charging parameters for the first time, if the same battery is charged in the future, there is no need to reset them;  
Users can set or modify all parameters online during the charging process.

Normal working conditions
(1) Altitude not exceeding 2000 meters;
(2) The temperature of the surrounding medium shall not be higher than+40 ℃ and not lower than -10 ℃;
(3) The relative humidity of the air shall not exceed 85% (when the medium temperature is 20 ℃± 5 ℃);
(4) A place without conductive dust;
(5) An environment without explosive hazards;
(6) An environment that does not contain gases or vapors that can corrode metals or damage insulation;
(7) In places without rain or snow invasion;
(8) In places where the vertical inclination does not exceed 5 degrees and there is no severe vibration or impact.

Main technical parameters of HGC173 series automatic constant current and constant voltage charger