Answer:
Ambient Temperature
Age of the Battery
Float Charging Voltage
Overcharging
Explanation:
Thermal runaway begins when the heat generated within a battery exceeds the amount of heat that is dissipated to its surroundings.
If the cause of excessive heat creation is not remedied, the condition will worsen. Internal battery temperature will continue to rise - causing battery current to rise - creating a domino effect. The rise in temperature in a single battery will begin to affect other batteries in close proximity, and the pattern will continue, thus the term “runaway.”