12V 20Ah Lithium Battery

Our 12V 20Ah Lithium Iron Phosphate (LiFePO4) Battery is a high-performance energy solution engineered for OEM and wholesale buyers. As a trusted lithium battery manufacturer, we deliver compact, durable, and customizable power systems ideal for emergency lighting, marine equipment, and renewable energy applications.

Key Features

High Energy Density: With 12.8V voltage and 20Ah capacity, this lithium battery provides 256Wh of reliable power, supporting devices requiring stable energy output.

Extended Cycle Life: Built to endure over 4,000 cycles at 80% depth of discharge (DOD), outperforming traditional batteries in longevity.

Robust Protection: IP65-rated casing ensures resistance to dust and water, making it suitable for harsh outdoor and marine environments.

Lightweight Design: Weighing only 2 kg with compact dimensions (177x167x124 mm), it simplifies installation and portability.

Customization Ready: Tailored specifications for OEM/ODM projects, including voltage, capacity, and BMS configurations.

Product Description

The 12V 20Ah LiFePO4 Battery combines advanced lithium technology with a military-grade BMS, safeguarding against overcharging, short circuits, and thermal extremes. Its ABS construction withstands temperatures from -20¡ãC to 60¡ãC, ensuring reliable performance in diverse climates. With a minimal self-discharge rate of 1% per month, the battery retains charge during storage, reducing maintenance efforts. Designed for a 10-year lifespan and backed by a 3-year warranty, it offers cost efficiency for industrial and commercial users. Flexible delivery options (FOB, EXW, CIF) streamline bulk orders, while fast-charging support (15A continuous current) enhances operational uptime.

How Does a 12V 20Ah Lithium Battery Deliver Long Life and Reliable Power?

A 12V 20Ah lithium battery using LiFePO4 chemistry provides long-lasting, reliable power with high energy density, fast charging, and excellent safety features. It outperforms traditional lead-acid batteries in lifespan, weight, and maintenance, making it ideal for portable electronics, solar backup, electric vehicles, and other moderate power applications.

What are the technical specifications of a 12V 20Ah lithium battery?

This battery typically operates at a nominal voltage of 12.8V and a capacity of 20Ah, delivering approximately 256Wh of energy. It supports continuous discharge currents of 20A and peak discharge currents up to 50A. The battery weighs about 3.5 to 4 kg and measures roughly 180 x 70 x 100 mm. It features high-quality cylindrical LiFePO4 cells and an internal resistance below 40mΩ.

How does a 12V 20Ah lithium battery compare to lead-acid batteries?

Compared to lead-acid batteries, 12V 20Ah lithium batteries offer up to 5 times longer cycle life (over 4000 cycles), significantly lighter weight (up to 70% lighter), faster charging, and zero maintenance. They provide stable voltage output and better performance in extreme temperatures, resulting in higher efficiency and lower total cost of ownership.

What are the common applications of a 12V 20Ah lithium battery?

These batteries are widely used in portable electronics, solar power systems, emergency lighting, electric scooters, small electric vehicles, and backup power supplies. Their compact size and reliable power output make them suitable for applications requiring moderate power with long operational life.

How long is the cycle life and lifespan of a 12V 20Ah lithium battery?

The cycle life ranges from 3000 to 5000 cycles depending on depth of discharge, with typical lifespan between 8 to 10 years. Proper maintenance and moderate discharge depths extend battery longevity significantly.

What safety features and certifications ensure battery reliability?

Integrated Battery Management Systems (BMS) protect against overcharge, overdischarge, short circuits, and temperature extremes. Certifications such as UN38.3, UL1642, CE, FCC, and RoHS confirm compliance with international safety and quality standards.

How should a 12V 20Ah lithium battery be charged and maintained?

Charging follows a CC/CV (constant current/constant voltage) method with recommended charge voltages around 14.4V and charge currents near 20A. Maintenance is minimal: keep terminals clean, avoid deep discharges, and store batteries in cool, dry environments. Use chargers compatible with LiFePO4 chemistry for optimal performance.

What are the physical size and weight considerations?

Typical dimensions are approximately 180 mm long, 70 mm wide, and 100 mm high, with weights around 3.5 to 4 kg. The compact, lightweight design facilitates easy integration into portable and stationary devices.

How does temperature influence the performance of a 12V 20Ah lithium battery?

The battery performs reliably within a broad temperature range, typically -20°C to 60°C for discharge and 0°C to 50°C for charging. Extreme temperatures can reduce efficiency and lifespan, so temperature-controlled charging and storage environments are recommended.

How does the Battery Management System (BMS) improve safety and performance?

The BMS continuously monitors voltage, current, temperature, and state of charge, balancing cell voltages and preventing overcharge, overdischarge, short circuits, and thermal runaway. It enhances battery reliability and longevity, ensuring safe operation.

What advantages does LiFePO4 chemistry offer in 12V 20Ah batteries?

LiFePO4 chemistry provides superior thermal stability, longer cycle life, higher safety, and environmental friendliness compared to other lithium-ion chemistries. It delivers consistent voltage output and supports deep discharges without damage.

How do you select the right 12V 20Ah lithium battery for your needs?

Consider voltage and capacity requirements, physical size constraints, discharge current needs, and application environment. Choose batteries with integrated BMS and certifications from reputable manufacturers like Lithium-Battery-Manufacturer to ensure quality and support.

Battery Specification and Performance Chart

Charging and Temperature Range Chart