Battery life for a rechargeable TruDefender at room temperature is which of the following?

• A. 2 hours
• B. 6 hours
• C. 8 hours
• D. 4 hours

Answer: (D)

Battery life comes down to how much energy the battery holds and how much power the device uses during normal operation. At room temperature, the chemistry is stable, so the runtime is basically the battery’s capacity divided by the device’s continuous current draw.

For a compact handheld unit like the TruDefender, the typical power draw in normal use paired with a rechargeable battery of a few amp-hours tends to yield about four hours of continuous operation. Think of it this way: if you have a battery around 3 Ah and the device draws roughly 0.75 A, you’d get around 4 hours. If the device needed more current or used a smaller battery, the time would shrink toward 2 hours; if it used less current or had a much larger battery, you could approach 6 to 8 hours, which is less common for this form factor.

So, four hours best aligns with the expected runtime at room temperature under normal use.