1. Introduction
This manual provides essential information for the safe and efficient operation of your DC HOUSE 36V 25A Lithium Battery Charger. Please read this manual thoroughly before use and retain it for future reference.
Package Contents:
- DC HOUSE 36V 25A Lithium Battery Charger
- Input Power Cable (1.1m/3.6ft)
- Output Cable with 2-Pin Connector (1.1m/3.6ft)
- O-shaped M8 Terminal Adapter Cable (0.5m/1.64ft)
- Instruction Manual
2. Safety Information
Always prioritize safety when operating electrical equipment. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Read the Manual: Understand all operating procedures and safety warnings before use.
- Correct Battery Type: This charger is designed exclusively for 36V (38.4V) Lithium Iron Phosphate (LiFePO4) batteries. Do not attempt to charge other battery types, as this may cause damage to the battery or charger, and poses a fire risk.
- Ventilation: Ensure adequate ventilation during charging. Do not cover the charger.
- Connection Order: Always connect the charger to the battery first, then plug the charger into the AC power outlet. Disconnect in reverse order.
- Avoid Short Circuits: Ensure output terminals do not touch each other.
- Water and Dust: While the charger has an IP65 waterproof rating, avoid submerging it or exposing it to excessive moisture. Keep it clean and free from dust.
- Damage: Do not use the charger if it or its cables are damaged. Contact support for assistance.
- Disassembly: Do not attempt to disassemble or modify the charger. This voids the warranty and can lead to electric shock.
3. Product Features
The DC HOUSE 36V 25A Lithium Battery Charger is engineered for optimal performance and safety.
3.1. Designed for Lithium Batteries
This charger is specifically designed for 36V (38.4V) Lithium Iron Phosphate (LiFePO4) batteries, with a maximum charging voltage of 43.8V. It supports a 0V charging function to reactivate deeply discharged lithium batteries.

Image: The charger is compatible with 36V Lithium Iron Phosphate batteries and not recommended for lead-acid batteries.
3.2. Fast Charging Capability
With a 25A current and 900W power output, this charger offers high efficiency (≥ 93%) to significantly reduce charging times. It can fully charge a 36V 50AH battery in approximately 2 hours and a 36V 100AH battery in about 4 hours. It is suitable for various applications including golf carts, trolling motors, forklifts, and other devices equipped with 36V lithium batteries.

Image: A table illustrating the estimated charging times for different battery capacities with varying charger current outputs.
3.3. Multiple Safety Protections
The charger incorporates comprehensive safety features to protect both the battery and the user:
- Input Low Voltage Protection
- Input Over-voltage Protection
- Charger Overheating Protection
- Output No-load Protection
- Output Short Circuit/Reverse Connection Protection
- Output Over-current/Over-voltage Protection
- Automatic shutdown after full charge

Image: Visual representation of the various safety protections integrated into the charger.
3.4. IP65 Waterproof and Durable Design
Constructed with an aluminum alloy die-cast shell, the charger is sturdy, durable, and features an IP65 waterproof rating. This design ensures excellent performance in various complex environments, offering resistance to water, high temperatures, and shock.

Image: The charger's robust aluminum casing highlighting its IP65, drop-proof, shock-proof, and explosion-proof features.
3.5. Portable and Easy-to-Use
The charger features a convenient handle design for easy portability. With an input cable length of 1.1m (3.6ft) and an output cable length of 1.1m (3.6ft), the total cable length is approximately 2.2m (7.2ft), providing flexibility in placement. Its charging indication function is straightforward, making it a plug-and-play device.

Image: Dimensions and weight of the charger, along with cable lengths, emphasizing its compact and portable design.
4. Setup
4.1. Connecting the Charger
- Ensure the charger is unplugged from the AC power outlet.
- Connect the output cable to your 36V LiFePO4 battery. If your battery uses M8 terminals, use the provided O-shaped M8 terminal adapter cable. Ensure a secure connection to the battery terminals (positive to positive, negative to negative).
- Connect the 2-pin connector from the output cable to the charger's output port.
- Plug the AC input cable into a standard 100V-240VAC power outlet.

Image: Step-by-step visual guide for connecting the charger to a battery and power source.
5. Operating Instructions
5.1. Charging Process
Once properly connected, the charger will automatically begin the charging process. The built-in cooling fan will activate to dissipate heat, ensuring stable performance.
5.2. Charging Status Indicators
The charger features a clear LED indicator to show the charging status:
- Red Light Flashing: Precharging (0%~19% charged)
- Yellow Light Flashing: Normal Charging (80%~99% charged)
- Green Light On: Fully Charged (100% charged)
- Red/Green Light Flash Alternately: 0V Charging Wake Up Mode

Image: The charger's cooling fan and LED indicator lights for charging status.
5.3. Automatic Shut-off
The charger is equipped with an automatic shut-off feature. Once the battery reaches a full charge (100%), the charger will automatically stop charging to prevent overcharging and protect the battery's lifespan.
6. Maintenance
- Cleaning: Regularly wipe the charger's exterior with a dry, soft cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the charger in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Cable Care: Inspect cables for any signs of wear or damage before each use. Do not use if cables are frayed or broken.
7. Troubleshooting
If you encounter issues with your charger, refer to the following common troubleshooting steps:
- Charger Not Turning On: Ensure the AC power cable is securely plugged into a live outlet and the charger's input port. Check the power outlet with another device.
- Battery Not Charging (or Red Light Flashing Continuously): Verify that the output cable is correctly and securely connected to the battery terminals. Ensure the battery is a 36V LiFePO4 type. If the battery is deeply discharged (0V), the charger's wake-up mode should activate (Red/Green light flashing alternately).
- Overheating: Ensure the charger is in a well-ventilated area and not covered during operation. The built-in fan should be running.
- Unusual Noises/Smells: Immediately unplug the charger from both the battery and the AC outlet. Do not use the charger and contact customer support.
For further assistance, please refer to the warranty and support section.
8. Specifications
| Parameter | Value |
|---|---|
| Input Voltage | 100-240VAC |
| Charging Voltage | 43.8V |
| Max Charging Current | 25A |
| Working Temperature | -20℃ ~ +45℃ (-4°F ~ 113°F) |
| Storage Temperature | -40℃ ~ +70℃ (-40°F ~ 158°F) |
| Waterproof Rating | IP65 |
| Battery Type | LiFePO4 Batteries |
| Product Dimensions | 9.13 x 5.39 x 4.5 inches |
| Item Weight | 6.52 pounds |

Image: Detailed technical specifications of the charger.
9. Warranty and Support
DC HOUSE provides professional technical support and customer service for this 36V 25A Lithium Battery Charger. For any questions or issues, please contact our customer support team. We are committed to ensuring your satisfaction with our product.
Please retain your proof of purchase for warranty claims.
10. Product Video
Video: An overview of the DC HOUSE 36V 25A Lithium Battery Charger, showcasing its features and design.