What Is a LiFePO4 Battery?

A LiFePO4 lithium battery, also known as an LFP battery (Lithium Iron Phosphate), is a type of rechargeable lithium-ion battery that uses lithium iron phosphate (LiFePO₄) as its cathode material. Renowned for its exceptional thermal stability, safety, and long cycle life, this chemistry avoids the risks of thermal runaway seen in other lithium-ion variants. Often dubbed the "safer lithium battery," LiFePO4 technology delivers reliable performance in extreme temperatures and maintains consistent power output even under heavy loads. With a lifespan exceeding 2,000–5,000 charge cycles (far surpassing lead-acid or standard lithium-ion batteries), LFP batteries are widely used in solar energy storage, electric vehicles, marine systems, and backup power solutions. Their lightweight design, low self-discharge rate, and minimal maintenance needs further cement their role as a sustainable powerhouse in modern energy storage.