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BYD Blade Battery: Why It's the Safest and Most Reliable Battery for Electric and Hybrid Cars

The LFP battery is designed to offer maximum safety, stable range, and an exceptional lifespan exceeding 5,000 charge cycles. It is considered one of the safest batteries in the world and is the heart of BYD's electric and hybrid vehicles.


What is the Blade Battery?

The safe heart of BYD electric and hybrid vehicles

The Blade Battery is a lithium iron phosphate (LFP) battery developed by BYD through 29 years of innovation. It is stable, safe, and designed to deliver consistent performance in both fully electric models and plug-in hybrids with DM-i technology.

Recognised as one of the world's safest batteries for electric and hybrid vehicles.


Blade Battery (LFP) vs. Traditional Batteries (NCM): The Comparison

Blade Battery's LFP technology offers significant advantages over traditional NCM (Nickel-Cobalt-Manganese) batteries:

Characteristic BYD Blade Battery (LFP) Traditional Batteries (NCM)
Safety ✓ Passes nail penetration test without smoke or flames ✗ Fire risk in extreme conditions
Cycle duration ✓ Over 5,000 charging cycles ~1,000-2,000 cycles
Thermal stability ✓ Surface temperature 30-60°C in extreme cases ✗ Possible thermal runaway above 200°C
Oxygen emissions ✓ No emissions (lower fire risk) ✗ Release of oxygen in case of overheating
Environmental impact ✓ More sustainable materials (iron and phosphate) Cobalt and nickel (limited resources)
Space efficiency ✓ Plus 50% compared to traditional parcels Standard
Degradation ✓ Very slow over time Faster after 3-5 years

Conclusion: BYD’s Blade Battery represents a quantum leap in electric vehicle battery technology, offering superior safety, greater longevity, and better performance over time than traditional solutions.

29

years of innovation

5,000+

charging cycles

50%

more space efficient

0

smoke and flames


Nail Penetration Test: The Ultimate Test for Your Safety

This test is one of the most stringent in the battery industry. It simulates what could happen in a serious accident, when metal objects could penetrate the battery's structure.

The Blade Battery passed the test with exceptional results and maximum reliability:



Strengths of the Blade Battery

Designed to last, engineered to protect you

Greater Security

Blade Battery's LFP technology offers high safety: the stable chemistry does not release oxygen, produces little heat and the long shape of the cells ensures uniform cooling.

Even in the event of impacts or overheating, heat is dissipated and the battery does not reach critical temperatures, reducing the risk of fire.

Cost Savings

BYD's Blade Battery uses long, flat blade-shaped cells nested in a honeycomb structure without intermediate modules, resulting in a compact, high-density battery pack.

In Cell-to-Body versions, the battery becomes part of the frame, optimising internal space and lowering the centre of gravity, for greater stability and safety of the vehicle.

Impact Resistance

The internal blade design increases strength and weight distribution, reducing deformation in the event of an impact.

It is a battery designed by BYD engineers to offer greater protection, safety and reliability over time, integrating into the vehicle structure and helping to provide greater stability, efficiency and daily driving comfort.


Extended Life and Consistent Performance

The LFP chemistry guarantees over 5,000 charge cycles while maintaining high performance. Thanks to superior thermal stability and reduced degradation over time, the Blade Battery retains its capacity much longer than traditional NMC batteries.

5,000+

charging cycles

10+

years of duration

70%

guaranteed capacity

500°C

thermal stability


Frequently Asked Questions about the Blade Battery

All you need to know about the BYD Blade Battery


The Blade Battery is an LFP battery designed by BYD to offer greater safety, a long lifespan, and stable performance over time. It’s the same technology used in BYD’s electric and hybrid models.

The standard warranty is 8 years or 250,000 km, with a guaranteed residual capacity of more than 70% (SOH > 70%) for the full warranty period. This is one of the most comprehensive warranties in the sector.

Because it has passed extreme tests such as the nail penetration test, maintaining a stable temperature without releasing smoke or flames. It is one of the safest batteries in the world.

It can exceed 5,000 charge and discharge cycles, ensuring many years of use with consistent performance. It retains capacity longer than many traditional battery technologies.

The Blade Battery is available across BYD’s entire range of electric vehicles (BEVs) and plug-in hybrid (DM-i) models.

Charging can be done via AC (alternating current) stations or DC (direct current) fast chargers. BYD vehicles support DC fast charging to shorten charging time.

Replacement costs depend on the specific car model and contract conditions, but the Blade Battery’s long life means replacement is typically required only after many years or hundreds of thousands of kilometres.

Yes. Blade Batteries are designed to be recyclable, with processes that help recover valuable materials and reduce electronic waste.