How Long Do D Size Batteries Last?
D batteries are ideal for such demanding devices because they produce a high level of current. The precise amount varies according to brand and circ*mstances, but an average D battery could be expected to produce a current of approximately 10,000 mAh (milliamps per hour).
A milliamp is 1,000th of an amp - the standard unit of electrical charge. A high current consumption rate of 500mAh (milliamps per hour) would give a battery life of around 14 hours before replacement or recharge is required.
Batteries are often listed with an ‘Ah’ rating, meaning ‘amp hour’. A 2.5 Ah rating means that the battery would last for two and a half hours if drained at a rate of precisely one amp per hour. However, it’s worth noting that this is a purely theoretical figure used for comparative purposes as real-world power usage does not take place at a steady rate.
