There are many different types of lithium-ion battery, of which lithium iron phosphate is only one. Lithium cobalt oxide is the type that is most commonly used in small electronics, such as mobile phones and laptops, and has a higher potential to thermal runaway. Even under normal operating conditions they generate heat when charging.

Don't confuse this type of lithium-ion battery with lithium iron phosphate. They offer a much longer lifecycle, a very constant discharge voltage and are thermally and chemically much more stable. This is the battery type that everyone is now investing in for electric vehicles and materials handling equipment.