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.

Miady LiFePO4 battery showing M8 terminals, reliable ABS case, and durable handle

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:

Miady LiFePO4 12.8V 100Ah battery specifications table

Image: A comprehensive table detailing the electrical characteristics, standard charging parameters, operating conditions, and physical structure of the Miady LiFePO4 12.8V 100Ah battery.

CategoryParameterValue
General SpecificationsNominal Voltage12.8V
Nominal Capacity100Ah@0.2C
Energy1280Wh
Internal Resistance≤45mΩ
Cycle Life2000 Cycles @ 0.2C Charging/Discharging, Until 70% Capacity
Electrical CharacteristicsSelf Discharge≤3.5% per month at 25°C
Max. Charging Voltage14.0-14.6V
Charging Current20A
Max. Charging Current50A
Max. Continuous Current100A
Max. Pulse Current200A (<3S)
Discharging Cut-off Voltage10.0V
Operating ConditionCharge Temperature0°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 Temperature0°C to 45°C (32°F to 113°F) @60±25% Relative Humidity
StructureWater Dust ResistanceIP55
Cell & FormatIFR32700 N60, 4S17P
CasingPlastic
Dimension (L*W*H)328*172*215mm (12.9 x 6.7 x 8.5 inches)
WeightApprox. 13.1Kg (28.9 lbs)
Terminal TypeM8
Miady LiFePO4 battery dimensions

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:

  1. Unpacking: Carefully remove the battery from its packaging. Inspect for any visible damage.
  2. Initial Charge: It is recommended to fully charge the battery before its first use. Use a dedicated LiFePO4 charger.
  3. 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.
  4. 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.
  5. 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:

  1. Use a dedicated LiFePO4 battery charger. Standard lead-acid chargers may not fully charge or may damage the battery.
  2. Ensure the charger's voltage output is within the recommended range of 14.0V to 14.6V.
  3. Connect the charger to the battery terminals, observing correct polarity (positive to positive, negative to negative).
  4. The recommended charging current is 20A, with a maximum charging current of 50A.
  5. 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:

  1. Ensure the total current draw of your devices does not exceed the battery's maximum continuous discharge current of 100A.
  2. The battery can handle a maximum pulse current of 200A for less than 3 seconds.
  3. The battery's BMS will cut off discharge if the voltage drops to 10.0V to protect the cells.
  4. 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:

Various applications for Miady LiFePO4 battery including electric forklift, UPS system, scooters, solar power, telecom tower, energy storage, boat, and caravans

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:

ProblemPossible CauseSolution
Battery not charging
  • Incorrect charger type (not LiFePO4 compatible)
  • Loose or incorrect connections
  • Charger malfunction
  • Battery BMS protection activated (e.g., over-discharge)
  • Ensure you are using a dedicated LiFePO4 charger.
  • Check all cable connections for tightness and correct polarity.
  • Test the charger with another battery or use a different charger.
  • If BMS is activated due to over-discharge, connect to a compatible LiFePO4 charger to reset.
Battery not providing power
  • Battery is fully discharged
  • Loose or incorrect connections
  • BMS protection activated (e.g., over-discharge, overcurrent, short-circuit)
  • Connected device malfunction
  • Charge the battery.
  • Check all cable connections for tightness and correct polarity.
  • If BMS is activated, disconnect the load, wait a few minutes, and then reconnect. If due to overcurrent/short-circuit, identify and fix the issue with the load.
  • Test the connected device with another power source.
Reduced battery runtime
  • Battery not fully charged
  • High power draw from devices
  • Operating in extreme temperatures
  • Battery aging (after many cycles)
  • Ensure the battery is fully charged with a compatible LiFePO4 charger.
  • Reduce the load or consider a higher capacity battery for your application.
  • Operate the battery within its recommended temperature range.
  • Battery capacity naturally degrades over thousands of cycles.
Battery is hot
  • Overcharging
  • Excessive discharge current
  • Operating in high ambient temperatures
  • Disconnect the charger immediately. Verify charger settings and compatibility.
  • Reduce the load on the battery. Ensure current draw is within specifications.
  • Move the battery to a cooler environment.
  • If overheating persists, discontinue use and contact support.

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.

© 2026 Miady. All rights reserved.

This manual is subject to change without notice.

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