1. Introduction
This manual provides essential instructions for the safe and effective operation of your HTRC 10A 12V/24V Fast Battery Charger. This intelligent charger is designed for 12V 10A and 24V 5A lead-acid batteries (AGM, Calcium, Gel, MF, EFB, SLA, VRLA, WET), as well as Lithium and LiFePO4 batteries. It features automatic sulfation detection, pulse repair, an LCD screen for visual charging status, and automatic temperature compensation for optimal charging in varying conditions.
Please read this manual thoroughly before first use and retain it for future reference.

Image 1.1: HTRC 10A 12V/24V Fast Battery Charger with battery clamps.

Image 1.2: Supported battery types and voltage systems.
2. Safety Information
Always prioritize safety when operating electrical equipment. This charger incorporates multiple protection features, but user vigilance is crucial.
2.1 Integrated Protections
- Short Circuit Protection: Prevents damage from accidental short circuits.
- Over Discharge Protection: Safeguards batteries from excessive discharge.
- Reverse Connection Protection: Protects against incorrect polarity connections.
- Over-Load Protection: Prevents damage from drawing too much current.
- Over-Temperature Protection: Shuts down if internal temperature exceeds safe limits.
- High-Voltage Protection: Guards against excessive input voltage.
- Low-Voltage Protection: Ensures stable operation with adequate input voltage.
- Overcharge Protection: Prevents battery damage from overcharging.

Image 2.1: Overview of the 8 smart protection features.
2.2 General Safety Guidelines
- Ensure adequate ventilation during charging to prevent gas buildup.
- Do not charge completely discharged batteries that cannot be activated.
- Avoid sparks or flames near the battery during charging.
- Keep the charger away from water, moisture, and flammable materials.
- Do not attempt to open or modify the charger.
- Always disconnect the AC power before connecting or disconnecting battery clamps.
- Wear appropriate personal protective equipment, such as eye protection and gloves.
3. Setup
Follow these steps to set up your HTRC battery charger:
- Connect Battery Clamps: Connect the red positive (+) clamp to the positive (+) terminal of the battery and the black negative (-) clamp to the negative (-) terminal of the battery. Ensure a secure connection.
- Connect to Power: Plug the charger's AC power cord into a suitable electrical outlet. The LCD screen will illuminate.
- Select Charging Mode: Press the 'MODE' button to cycle through the available charging modes until the desired mode is selected. The charger will automatically detect 12V or 24V batteries.
- Begin Charging: The charger will automatically begin the charging process. Monitor the LCD screen for status updates.

Image 3.1: Charger modes and specifications.
4. Operating Instructions
4.1 Charging Modes
The charger offers four selectable modes, chosen with a single button press:
- Motorcycle Mode (1A-3A): Suitable for smaller 12V batteries typically found in motorcycles.
- STD (Standard) Mode (1A-10A): For standard 12V/24V lead-acid batteries (Flooded, WET, EFB, SLA).
- AGM/GEL Mode (1A-10A): Specifically designed for 12V/24V AGM and GEL batteries. This mode also supports Lithium and LiFePO4 batteries.
- Repair Mode: Used to increase battery health status or activate weak, old, and idle batteries through pulse repair.
4.2 LCD Display Information
The large LCD screen provides real-time charging status and information:
- Battery Full (FUL): Indicates the battery is fully charged.
- Standby (OFF): Charger is in standby mode.
- Repair Process Ended (End): Repair cycle is complete.
- Wrong Polarity (Ero): Indicates incorrect battery clamp connection.
- Battery Real-time Voltage (V): Displays the current battery voltage.
- Charger Inside Temperature (°C/°F): Shows the internal temperature of the charger.
- Charging Current (A): Displays the current flowing into the battery.
- Already Charged Capacity (AH): Shows the accumulated Ampere-hours charged.

Image 4.1: Detailed view of the LCD screen display.
4.3 Automatic Temperature Compensation
The charger automatically adjusts charging parameters based on ambient temperature to ensure optimal and safe charging:
- Winter Mode (below 10°C/50°F): Provides powerful charging suitable for cold conditions.
- Summer Mode (above 28°C/82°F): Ensures safe charging in warmer environments.

Image 4.2: Automatic Winter and Summer charging modes.
4.4 Memory Function
The charger includes a memory function. After a power interruption or completion of a charge cycle, the charger will default to the last selected mode when powered on again. This simplifies repeated charging tasks.
5. Maintenance
5.1 Smart Pulse Repair Function
The integrated pulse repair function helps to maintain and potentially reactivate weak, old, or idle batteries by addressing sulfation and acid stratification. Select 'Repair Mode' to initiate this process. Note that completely dead batteries may not be recoverable.

Image 5.1: Smart Pulse Repair function in action.
5.2 General Care and Storage
- Clean the charger casing with a dry, soft cloth. Do not use solvents or abrasive cleaners.
- Inspect the battery clamps and cables for any damage before each use.
- Store the charger in a cool, dry place, away from direct sunlight and extreme temperatures.
- Ensure the charger is disconnected from both the AC power and the battery when not in use.
6. Troubleshooting
If you encounter issues with your HTRC battery charger, refer to the following common problems and solutions:
- Charger does not turn on: Ensure the AC power cord is securely plugged into a live outlet. Check for power at the outlet.
- Battery not charging: Verify that the battery clamps are correctly and securely connected to the battery terminals (red to positive, black to negative). Ensure the correct charging mode is selected for your battery type.
- 'Ero' displayed on LCD: This indicates a wrong polarity connection. Immediately disconnect the charger from AC power and the battery, then reconnect the clamps correctly.
- Completely discharged batteries: Note that batteries that are completely discharged or deeply sulfated may not be activated or charged by this unit. The charger automatically identifies faulty batteries.
- Over-temperature shutdown: If the charger becomes too hot, it will automatically shut down. Allow it to cool down in a well-ventilated area before resuming operation.
If problems persist, please contact HTRC customer support.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | HTRC |
| Model Number | 10A CHARGER |
| Color | Red |
| Input Voltage | 100-240V~50/60Hz |
| Output Current (12V) | Max 10A |
| Output Current (24V) | Max 5A |
| Output Voltage | 12 Volts (DC) / 24 Volts (DC) |
| Max Input Power | 120W |
| Battery Compatibility | 12V/24V Lead-Acid (AGM, Calcium, Gel, MF, EFB, SLA, VRLA, WET), Lithium, LiFePO4 |
| Product Dimensions | 8P x 22L x 10H centimeters (approx. 3.15 x 8.66 x 3.94 inches) |
| Compliance | ETL |

Image 7.1: Product dimensions and included accessories.

Image 7.2: Versatile applications of the HTRC battery charger.
8. Warranty and Support
Specific warranty details are not provided in the product information. For warranty claims, technical support, or any inquiries regarding your HTRC 10A 12V/24V Fast Battery Charger, please contact the manufacturer or your point of purchase. Retain your proof of purchase for any warranty-related services.




