Miady 100Ah
Miady LiFePO4 12V 100Ah Lithium Battery User Manual
Model: 100Ah
Introduction
This manual provides essential information for the safe and efficient use of your Miady LiFePO4 12V 100Ah Lithium Battery. Please read this manual thoroughly before installation and operation to ensure optimal performance and longevity of your battery.
Safety Information
Always observe the following safety precautions to prevent injury or damage to the battery and connected equipment:
- Store the battery at approximately 75% capacity and recharge every 6 months to maintain optimal health.
- Do not store the battery above 60°C (140°F). High temperatures can degrade battery performance and safety.
- Avoid short-circuiting the battery terminals. This can cause severe damage to the battery and pose a fire hazard.
- Do not crush, mutilate, or puncture the battery. Physical damage can lead to internal short circuits and dangerous reactions.
- Ensure correct polarity when connecting the battery. Reversing polarity can damage the battery and connected devices.
- Do not disassemble the battery. The battery contains sensitive components and chemicals that can be hazardous if exposed.
- Do not dispose of the battery in fire. Lithium batteries can explode or ignite when exposed to high heat.
- Use only a specific LiFePO4 charger. Using an incompatible charger, such as a fully automatic SLA charger, may not fully charge the battery and could cause damage.
Product Overview
The Miady LiFePO4 12V 100Ah Lithium Battery is a high-performance, deep-cycle rechargeable battery designed for various applications. It offers a long lifespan, enhanced safety features, and a lightweight design.
Key Features
- Extended Cycle Life: Provides over 2000 charge and discharge cycles, significantly outlasting traditional lead-acid batteries (200-500 cycles).
- Integrated BMS: Features a built-in Battery Management System for protection against overcharge, over-discharge, overcurrent, short-circuit, and over-temperature. It also includes internal cell balancing.
- Lightweight and Compact: Weighs less than half of a comparable lead-acid battery, simplifying installation and reducing overall load.
- Maintenance-Free: Designed for hassle-free operation without the need for regular maintenance.
- Environmentally Friendly: LiFePO4 chemistry is safer and more environmentally conscious, free from gas discharge and acid leaks.
- Wide Temperature Range: Operates effectively across a broad temperature spectrum, from -20°C to 60°C for discharge and 0°C to 45°C for charging.
- Series and Parallel Capability: Supports series connections up to 51.2V and parallel connections for increased capacity.
Components
The battery features robust construction for durability and ease of use.

Image: Close-up view of the Miady LiFePO4 battery highlighting its M8 terminals for superb conductivity, a reliable ABS case offering resistance to heat and shock, and a durable handle for easy carrying and removal.
- M8 Terminals: Provide superb conductivity for efficient power transfer.
- Reliable ABS Case: Offers resistance to heat and shock, ensuring durability and protection.
- Durable Handle: Designed for easy carrying and removal of the battery.
Specifications
Detailed technical specifications for the Miady LiFePO4 12V 100Ah battery:

Image: A comprehensive table detailing the electrical characteristics, standard charging parameters, operating conditions, and physical structure of the Miady LiFePO4 12.8V 100Ah battery.
| Category | Parameter | Value |
|---|---|---|
| General Specifications | Nominal Voltage | 12.8V |
| Nominal Capacity | 100Ah@0.2C | |
| Energy | 1280Wh | |
| Internal Resistance | ≤45mΩ | |
| Cycle Life | 2000 Cycles @ 0.2C Charging/Discharging, Until 70% Capacity | |
| Electrical Characteristics | Self Discharge | ≤3.5% per month at 25°C |
| Max. Charging Voltage | 14.0-14.6V | |
| Charging Current | 20A | |
| Max. Charging Current | 50A | |
| Max. Continuous Current | 100A | |
| Max. Pulse Current | 200A (<3S) | |
| Discharging Cut-off Voltage | 10.0V | |
| Operating Condition | Charge Temperature | 0°C to 45°C (32°F to 113°F) @60±25% Relative Humidity |
| Discharge Temperature | -20°C to 60°C (-4°F to 140°F) @60±25% Relative Humidity | |
| Storage Temperature | 0°C to 45°C (32°F to 113°F) @60±25% Relative Humidity | |
| Structure | Water Dust Resistance | IP55 |
| Cell & Format | IFR32700 N60, 4S17P | |
| Casing | Plastic | |
| Dimension (L*W*H) | 328*172*215mm (12.9 x 6.7 x 8.5 inches) | |
| Weight | Approx. 13.1Kg (28.9 lbs) | |
| Terminal Type | M8 | |

Image: Visual representation of the Miady LiFePO4 battery's dimensions: 12.9 inches (32.8 cm) length, 6.7 inches (17.2 cm) width, and 8.5 inches (21.5 cm) height.
Setup and Installation
Follow these guidelines for proper setup and installation of your Miady LiFePO4 battery:
- Unpacking: Carefully remove the battery from its packaging. Inspect for any visible damage.
- Initial Charge: It is recommended to fully charge the battery before its first use. Use a dedicated LiFePO4 charger.
- Mounting: Secure the battery in a well-ventilated area, away from direct sunlight, heat sources, and flammable materials. Ensure the battery is stable and cannot move during operation.
- Connections:
- Connect the positive (+) terminal of the battery to the positive terminal of your system.
- Connect the negative (-) terminal of the battery to the negative terminal of your system.
- Ensure all connections are tight and secure to prevent arcing and overheating.
- Use appropriate gauge cables for your application to handle the expected current.
- Series and Parallel Connections:
- For series connections (to increase voltage), ensure all batteries are of the same model, capacity, and state of charge before connecting. The battery supports series connections up to 51.2V (4 batteries).
- For parallel connections (to increase capacity), ensure all batteries are of the same model, capacity, and state of charge. The battery supports parallel connections of up to two batteries.
- Consult a qualified technician for complex multi-battery configurations.
Operating Instructions
Charging the Battery
To charge your Miady LiFePO4 battery:
- Use a dedicated LiFePO4 battery charger. Standard lead-acid chargers may not fully charge or may damage the battery.
- Ensure the charger's voltage output is within the recommended range of 14.0V to 14.6V.
- Connect the charger to the battery terminals, observing correct polarity (positive to positive, negative to negative).
- The recommended charging current is 20A, with a maximum charging current of 50A.
- Charge the battery within the temperature range of 0°C to 45°C (32°F to 113°F).
Discharging the Battery
When using the battery to power devices:
- Ensure the total current draw of your devices does not exceed the battery's maximum continuous discharge current of 100A.
- The battery can handle a maximum pulse current of 200A for less than 3 seconds.
- The battery's BMS will cut off discharge if the voltage drops to 10.0V to protect the cells.
- Operate the battery within the discharge temperature range of -20°C to 60°C (-4°F to 140°F).
Typical Applications
The Miady LiFePO4 battery is suitable for a wide range of applications, including:

Image: An illustration showcasing diverse applications for the Miady LiFePO4 battery, such as electric forklifts, UPS systems, scooters, solar power installations, telecom towers, energy storage solutions, boats, and caravans.
- Solar & Wind Power Systems
- Uninterruptible Power Supply (UPS) Systems
- Electric Vehicles (e.g., Golf Carts, E-bikes, E-rickshaws)
- Marine Applications (Boats, Trolling Motors)
- Recreational Vehicles (RVs, Caravans, Camping)
- Energy Storage
- Lighting Systems
- Industrial Equipment (e.g., Electric Forklifts)
- Telecom Towers
Maintenance
The Miady LiFePO4 battery is designed to be maintenance-free. However, adhering to these simple practices will ensure its longevity:
- Regular Inspection: Periodically check the battery terminals for corrosion or loose connections. Clean terminals if necessary.
- Storage: If storing the battery for an extended period, ensure it is charged to approximately 75% of its capacity. Recharge every 6 months to prevent deep discharge. Store in a cool, dry place between 0°C and 45°C (32°F to 113°F).
- Cleaning: Keep the battery case clean and free of dust and debris. Use a dry cloth for cleaning. Do not use solvents or harsh chemicals.
- Avoid Extreme Temperatures: While the battery has a wide operating temperature range, prolonged exposure to extreme heat or cold can affect its performance and lifespan.
Troubleshooting
If you encounter issues with your Miady LiFePO4 battery, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not charging |
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| Battery not providing power |
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| Reduced battery runtime |
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| Battery is hot |
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If the problem persists after attempting these solutions, please contact Miady customer support for further assistance.
Warranty and Support
Your Miady LiFePO4 12V 100Ah Lithium Battery comes with a 12-month warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.
The warranty does not cover damage resulting from:
- Improper installation or connection.
- Misuse, abuse, or negligence.
- Unauthorized modification or repair.
- Operating outside the specified environmental conditions.
- Damage caused by external factors such as accidents, natural disasters, or power surges.
For warranty claims or technical support, please contact Miady customer service. Have your purchase receipt and product model number ready when contacting support.
Manufacturer: Dongguan Jianshun Technology Co., Ltd.
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