Description
Our lithium battery manufacturer offers the 12V 40Ah/36Ah LiFePO4 Car Starting Battery, a high – performing solution for automotive use. It combines power, longevity, and customization for wholesale and OEM customers.
Key Features
- High Power Output: With a 12.8V rating and 40Ah/36Ah capacity, it supplies sufficient energy for starting vehicles and running accessories.
- Cold Cranking Amps (CCA): Delivers ¡Ý400A, ensuring reliable starts in extreme weather.
- Extended Cycle Life: Lasts over 4,000 cycles at 80% DoD, more durable and cost – effective than lead – acid batteries.
- Wide Operating Temperature Range: Functions well from – 30¡ãC to 75¡ãC, suitable for diverse environments.
- Low Self – Discharge Rate: Maintains performance with less than 2% self – discharge per month.
Product Description
The 12V 40Ah/36Ah LiFePO4 Car Starting Battery uses advanced LiFePO4 technology for superior safety and performance. It has a rated voltage of 12.8V and an energy output of about 460.8Wh. It supports a max continuous charge current of 80A and discharge current of 150A. With compact dimensions (260 x 175 x 200 mm) and a weight of around 5 kg, it’s easy to install. Constructed from high – quality ABS with an IP65 rating, it’s resistant to dust and water. The non – toxic and recyclable lithium iron phosphate chemistry promotes sustainability.
The 12V 40Ah LiFePO4 car starting battery provides reliable 400 cold cranking amps (CCA), over 3000 deep cycles, and advanced safety features with a lightweight, maintenance-free design. It delivers efficient, long-lasting power for automotive, marine, and portable applications, outperforming traditional lead-acid batteries in durability and performance.
What are the key specifications of the 12V 40Ah LiFePO4 car starting battery?
This battery offers a nominal voltage of 12.8V and a capacity of 40Ah, delivering approximately 512Wh of energy. It supports continuous discharge currents up to 80A and peak discharge currents around 500A for short bursts. The battery weighs about 5.5 kg and measures roughly 197 x 128 x 220 mm. It includes an integrated Battery Management System (BMS) for overcharge, over-discharge, short circuit, and temperature protection.
How does LiFePO4 chemistry ensure long life and reliable starting power?
Lithium iron phosphate chemistry provides excellent thermal stability and chemical safety, enabling thousands of charge-discharge cycles—often exceeding 3000—without significant capacity loss. It supports deep discharges up to 100% without damage and maintains high charge efficiency (~95%). This chemistry reduces risks of thermal runaway and fire, making it safer and longer-lasting than lead-acid batteries.
What safety features are integrated into the 12V 40Ah LiFePO4 battery?
The built-in BMS monitors voltage, current, and temperature to prevent overcharge, over-discharge, short circuits, and overheating. It balances cell voltages to optimize lifespan and performance. The battery casing is made of durable ABS material and typically features an IP54 to IP65 rating, protecting against dust and moisture.
How does the 12V 40Ah LiFePO4 battery compare to traditional lead-acid batteries?
Compared to lead-acid batteries, the LiFePO4 battery is lighter—about half the weight—requires zero maintenance, charges faster, and offers a cycle life 5 to 10 times longer. It delivers stable voltage under load and maintains higher usable capacity, resulting in better performance and lower total cost of ownership.
Which applications benefit most from the 12V 40Ah LiFePO4 battery?
Ideal for automotive starting, marine vessels, electric scooters, RVs, and backup power systems, this battery excels where reliable, moderate current bursts and long service life are critical. Its compact size and lightweight design also suit portable power applications.
How can users maximize the lifespan and performance of their 12V 40Ah LiFePO4 battery?
Users should charge with compatible LiFePO4 chargers, avoid deep discharges below recommended cut-off voltage, store the battery in cool, dry conditions, regularly inspect terminals, and monitor battery health via BMS or compatible smart devices if available.
What environmental benefits does the 12V 40Ah LiFePO4 battery offer?
LiFePO4 batteries are free from toxic heavy metals, fully recyclable, and have a longer lifespan, reducing waste and resource consumption. Their stable chemistry lowers the risk of leaks or fires, contributing to safer, greener energy solutions.
Chart: Comparison of 12V 40Ah LiFePO4 Battery vs Lead-Acid Battery
| Feature | 12V 40Ah LiFePO4 Battery | Typical 12V 40Ah Lead-Acid Battery |
|---|---|---|
| Energy Capacity (Wh) | ~512 | ~480 |
| Weight (kg) | 5.5 | 10-12 |
| Cycle Life (80% DoD) | >3000 | 300 – 500 |
| Continuous Discharge (A) | 80 | 40 – 60 |
| Peak Discharge (A) | 500 | 200 – 300 |
| Charge Time (hours) | 2.5 – 3.5 | 6 – 8 |
| Maintenance | Minimal | Regular water topping |
| Safety | High (BMS protected) | Moderate |
| IP Rating | IP54 – IP65 | Usually none |
Chart: Key Features and Benefits of 12V 40Ah LiFePO4 Car Starting Battery
| Feature | Benefit |
|---|---|
| Moderate CCA (400A) | Reliable engine starts in various conditions |
| Long Cycle Life (>3000) | Extended battery lifespan and reduced costs |
| Advanced BMS | Enhanced safety and performance monitoring |
| Lightweight Design | Easier installation and improved efficiency |
| Environmental Friendly | Safer and more sustainable energy storage |
