1. Product Overview
The Beleeb BLB-C30 Battery Charger is a versatile automotive maintainer designed for lead-acid batteries ranging from 12V to 72V and capacities of 40Ah to 200Ah. It features manual adjustment for both voltage and current, allowing precise control over the charging process. Equipped with essential safety features and a smart cooling system, this charger is suitable for a wide array of vehicles including cars, trucks, golf carts, RVs, marine vessels, yachts, mowers, and vehicles with AGM, SLA, ATV, or ISS lead-acid batteries.

Figure 1: Beleeb BLB-C30 Battery Charger with its main components and accessories.

Figure 2: The Beleeb BLB-C30 charger is suitable for a wide range of 12-72V battery charging applications across different vehicle types.
2. Safety Information
Read all safety warnings and instructions before using the battery charger. Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury.
2.1 General Safety Precautions
- Always operate the charger in a well-ventilated area.
- Keep the charger away from flammable materials and liquids.
- Do not expose the charger to rain or wet conditions.
- Ensure the charger is unplugged from the power outlet before making or breaking connections to the battery.
- Avoid touching the battery terminals or charger output terminals with bare hands when the charger is powered on.
2.2 Battery Compatibility and Warnings
- This charger is suitable for 12V/24V/36V/48V/60V/72V lead-acid batteries of 40Ah-200Ah capacity.
- WARNING: Batteries lower than 9V or over 200Ah are not suitable for this charger, as it may lead to overload or damage.
- WARNING: It is not recommended to charge lithium batteries or sealed deep cycle batteries (e.g., 6V/225Ah, 6V/240Ah, 6V/200Ah, 8V/183Ah) with this device.
- CAUTION: The charging voltage selected on the charger must match the battery voltage. Incorrect voltage selection will blow the fuse.

Figure 3: Ensure the charging voltage matches the battery voltage to prevent fuse damage. Not suitable for batteries above 200Ah.
3. Product Features and Components
The Beleeb BLB-C30 charger is designed with user-friendly controls and integrated safety features.

Figure 4: Labeled diagram of the charger's front and rear panels, highlighting key components.
- Ammeter: Displays the charging current. The needle will move towards zero as the battery charges.
- Portable Handle: For easy transport of the unit.
- Power Switch (ON/OFF): Controls the main power to the charger.
- Ampere Control Knob: Adjusts the charging speed (LOW, MEDIUM, HIGH).
- Output Terminals: Connect the red (+) and black (-) battery clips.
- Voltage Setting Button: Manually select the output voltage (12V, 24V, 36V, 48V, 60V, 72V) to match your battery.
- Smart Cooling Fan: Automatically activates when the heatsink temperature is between 104°F and 149°F (40°C - 65°C) to prevent overheating.
- Overload Reset Button: Resets the charger in case of an overload.
- Fuse Button: Access point for the internal fuse.
- AC Input 110V: Power input for the charger.
3.1 Protection Features

Figure 5: The charger incorporates multiple protection mechanisms for safe operation.
- Over Temperature Protection: The smart cooling fan helps regulate internal temperature.
- Over Voltage Protection: Prevents damage from excessive voltage.
- Over Current Protection: Safeguards against drawing too much current.
- Short Circuit Protection: Protects against short circuits at the output terminals.
- Reverse Wiring Protection: Prevents damage if battery clips are connected incorrectly.
4. Setup and Connection
Follow these steps to properly set up and connect your Beleeb BLB-C30 battery charger.
- Prepare the Battery: Before connecting, ensure your battery is a lead-acid type within the 40Ah-200Ah capacity range and its voltage is above 9V.
- Connect Charger to Battery:
- Connect the red (+) battery clip to the positive terminal of the battery.
- Connect the black (-) battery clip to the negative terminal of the battery.
- Ensure connections are secure.
- Set Voltage Level: Turn the Voltage Setting Button to match the voltage of your battery (e.g., 12V for a 12V battery, 48V for four 12V batteries in series).
- Set Ampere Level: Keep the Ampere Control Knob on "LOW" initially, especially for fully discharged batteries, to prevent blowing the fuse.
- Plug into Power Outlet: Plug the charger's power cable into a 110V AC power outlet.

Figure 6: Detailed view of the charger's controls for voltage and ampere settings.
5. Operating Instructions
Once connected, follow these steps to begin and complete the charging process.
- Power On: Turn the Power Switch to the "ON" position (the button will turn red).
- Select Charging Mode: Adjust the Ampere Control Knob to select your desired charging rate:
- "LOW" or "MEDIUM" for normal charging.
- "HIGH" for accelerated (fast) charging.
Note: The nominal theoretical maximum current varies by voltage: 12V-16A, 24V-12A, 36V-10A, 48V-8A, 60V-7A, 72V-6A.
- Monitor Charging: While charging, observe the Ammeter needle. It will constantly move towards the left (approaching zero) as the battery charges.
- Float Charging: When the ampere needle reaches almost zero, the battery is fully charged. The charger will automatically switch to float charging mode for maintenance.
- Disconnect Charger:
- First, turn the Power Switch to "OFF".
- Then, unplug the charger from the power outlet.
- Finally, remove the charging clips from the battery terminals.
Video 1: Demonstration of connecting and operating the Beleeb Battery Charger for automotive use.
6. Maintenance
Proper maintenance ensures the longevity and optimal performance of your charger.
- Cleaning: Regularly wipe the exterior of the charger with a dry, soft cloth. Do not use harsh chemicals or abrasives.
- Storage: Store the charger in a cool, dry place when not in use. Keep it away from direct sunlight and extreme temperatures.
- Cooling Fan: The smart cooling fan will automatically activate when the heatsink temperature is between 104°F and 149°F (40°C - 65°C). Ensure the fan vents are not obstructed during operation.
- Fuse Check: If the charger is not functioning, check the fuse button and overload button. Refer to the troubleshooting section for more details.
7. Troubleshooting
If you encounter issues with your Beleeb BLB-C30 charger, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger keeps tripping the breaker. |
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| Charger not charging or showing no current. |
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| Charger gets warm during operation. | Normal operation, especially during high current charging. | Ensure adequate ventilation around the charger. The smart cooling fan will activate as needed. This is normal. |
8. Specifications
| Attribute | Detail |
|---|---|
| Brand | Beleeb |
| Model Number | BLB-C30 |
| Item Weight | 14.56 pounds (approx. 6.6 kg) |
| Package Dimensions | 16.93 x 12.01 x 8.07 inches (approx. 43 x 30.5 x 20.5 cm) |
| Input Voltage | 110V AC |
| Output Voltage | 12V, 24V, 36V, 48V, 60V, 72V (DC) |
| Max Current (Nominal Theoretical) | 12V-16A, 24V-12A, 36V-10A, 48V-8A, 60V-7A, 72V-6A |
| Compatible Battery Capacity | 40Ah-200Ah Lead-Acid Batteries |
| Color | Red |
| UPC | 705124243356 |
| First Available Date | April 25, 2019 |
9. Warranty and Support
The Beleeb BLB-C30 Battery Charger is designed for long-term service when used correctly. For any questions, concerns, or support needs regarding your product, please refer to your order history on the platform where the purchase was made. This will allow you to directly contact the seller for assistance.
Please retain your purchase receipt as proof of purchase for warranty claims.





