Before revision: When in normal usage, these batteries work properly and safely, But once the battery has become damaged either through a wreck or wear and tear, an exothermic reaction from Thermal runaway causes a release of heat and fire.
After revision: When in normal usage, these batteries work properly and safely, But once the battery has become damaged either through a wreck or wear and tear, an exothermic reaction from thermal runaway causes a release of heat and fire.