The following 7 days another one went and following 3 months all of these beeped. I,dont know what goimf on with dollar shop batteries Nevertheless they was once a cut price but currently they have been rubbish. Easy Features: Scorching pad features 2-hour automobile-off; additionally the complete high-class Micromink https://www.sunbeambattery.com/industry-information/lithium-iron-phosphate-vs-ternary-lithium-37054.html