What's a LifePO4?

How does LifePO4 relate to my battery specification? what does it mean?

This is a lithium iron phosphate battery. LifePO4 batteries are best known for their safety profile, the result of an extremely stable chemistry. They are incombustible, in the event a mishandling during the charging and discharging period. They can also withstand very harsh conditions from freezing cold to scorching heat.