RJ-C121001A

10-Amp Car Battery Charger, 12V and 24V Smart Fully Automatic Maintainer Trickle Charger

Instruction Manual

Brand: Generic | Model: RJ-C121001A

Introduction

This manual provides essential information for the safe and effective operation of your 10-Amp Car Battery Charger. This intelligent, fully automatic charger is designed to maintain and charge various 12V and 24V lead-acid batteries, including Calcium, Gel, AGM, Wet, and EFB types. It features microprocessor control, multiple safety protections, and advanced charging modes to ensure optimal battery health and longevity.

Key features include:

Important Safety Information

Please read all safety warnings and instructions before using this product. Failure to follow these instructions may result in electric shock, fire, or serious injury.

Product Overview

Familiarize yourself with the components of your battery charger.

Front view of the 10-Amp Car Battery Charger with cables and clamps.

Figure 1: Overall view of the 10-Amp Car Battery Charger, showing the main unit, power cord, and battery clamps.

Close-up of the charger's LCD display and touch-sensitive mode selection buttons.

Figure 2: Detailed view of the charger's control panel, featuring the LCD display, mode selection button, and indicators for various charging modes (STD, AGM/GEL, WET, MOTORCYCLE, REPAIR).

Key Components:

Setup and Connection

  1. Prepare the Battery: Ensure the battery terminals are clean and free of corrosion. If charging a battery in a vehicle, ensure the vehicle is turned off and in park/neutral with the parking brake engaged.
  2. Connect Battery Clamps:
    • Connect the RED (+) positive clamp to the positive (+) battery terminal.
    • Connect the BLACK (-) negative clamp to the negative (-) battery terminal.
    • For vehicle batteries: If connecting to a battery installed in a vehicle, connect the negative clamp to the vehicle chassis away from the battery and fuel line if the negative terminal is grounded to the chassis. Consult your vehicle's manual for specific instructions.
  3. Connect to Power: Plug the charger's power cord into a standard 110-220V AC, 50-60Hz electrical outlet. The charger will automatically detect the battery voltage (12V or 24V) and begin the charging process.
  4. Initial Display: The LCD display will illuminate, showing current battery voltage, temperature, and charging status.

Operating Instructions

The charger operates automatically, but you can select specific modes for optimal charging.

Mode Selection

Press the "MODE SELECTION" touch button to cycle through the available charging modes:

Diagram illustrating the 7-stage charging process of the battery charger.

Figure 3: The 7-stage charging process, including Desulfurization, Trickle Charge, Constant Current Charge, Constant Voltage Charge, Battery Current Detection, Compensation Charging, and Floating Charging.

7-Stage Automatic Charging Process

The charger employs a sophisticated 7-stage charging process to optimize battery performance and lifespan:

  1. Desulfurization: Uses pulse voltage to break down lead sulfate crystals in sulfated batteries.
  2. Trickle Charge: Initial low current charge for deeply discharged batteries.
  3. Constant Current Charge: Charges the battery at a constant high current until it reaches a certain voltage.
  4. Constant Voltage Charge: Charges at a constant voltage, with current gradually decreasing.
  5. Battery Current Detection: Monitors battery current to ensure optimal charge.
  6. Compensation Charging: Fine-tunes the charge based on battery condition.
  7. Floating Charging: Maintains the battery at full charge with a low, constant voltage, preventing overcharge.

Temperature Compensation (Summer/Winter Mode)

The charger automatically adjusts charging parameters based on ambient temperature to prevent overcharging in hot conditions and ensure full charge in cold conditions.

Diagram showing Summer Mode for temperatures above 28°C and Winter Mode for temperatures between 0-10°C, with explanations of how the charger adjusts.

Figure 4: Automatic temperature compensation. In Summer Mode (>28°C), charging voltage is reduced. In Winter Mode (0-10°C), charging voltage is increased.

Pulse Repair Function

The "REPAIR" mode utilizes pulse technology to detect and restore lost battery performance by addressing sulfation and acid stratification. This can extend battery life and improve starting power. Note: This function cannot activate or charge totally dead batteries.

Float/Trickle Charge Mode

For long-term battery maintenance, especially during winter or extended storage:

  1. First, fully charge the battery using the appropriate mode (STD/AGM/GEL/WET). The display will show "FUL" when complete.
  2. Then, switch the charger to "MOTORCYCLE" mode. The charger will automatically enter trickle charging mode, maintaining the battery's charge without overcharging.

Maintenance

Troubleshooting

ProblemPossible CauseSolution
Charger not turning on.No power from outlet; loose connection; internal fault.Check power outlet; ensure power cord is securely plugged in; contact support if problem persists.
"FUL" displayed but battery not fully charged.Battery may be faulty or deeply sulfated; incorrect mode selected.Try "REPAIR" mode; test battery with a load tester; ensure correct mode is selected for battery type.
Charger displays "Reverse" or error.Reverse polarity connection.Disconnect from power, then reconnect clamps correctly (Red to +, Black to -).
Charger gets hot during operation.Normal operation; poor ventilation; excessive load.Ensure adequate ventilation around the charger; this is normal for high-current charging. The charger has thermal protection.
Pulse repair not working.Battery is completely dead or severely damaged.The repair function cannot revive totally dead batteries. Battery may need replacement.

Specifications

FeatureDetail
ModelRJ-C121001A
Input Voltage110-220V AC, 50-60Hz
Output Voltage12V / 24V Auto-detection
Output Current12V 10A, 24V 5A
Battery TypesLead-Acid (Calcium, Gel, AGM, Wet, EFB)
Charging Stages7-Stage Automatic
Thermal Protection65°C +/- 5°C
Dimensions15.75 x 6.1 x 9.4 cm
ComplianceCE, FC, Rohs, UL
Shell MaterialABS Flame Retardant
Image showing the flame retardant ABS shell material of the charger.

Figure 5: The charger features a flame-retardant ABS shell, providing durability and safety.

Warranty and Support

For any quality issues, a new replacement is available. Please refer to your purchase documentation for specific warranty terms and conditions. For technical support or inquiries, please contact the seller or manufacturer through the platform where the product was purchased.

Manufacturer: RJTianye

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