Apple is also examining a chemistry for the battery called LFP, or lithium iron phosphate, the person said, which is inherently less likely to overheat and is thus safer than other types of lithium-ion batteries.

这位知情人士说，Apple 还在研究一种名为 LFP 或磷酸铁锂的电池化学物质，这种电池本来就不太可能过热，因此比其他类型的锂离子电池更安全。