Battery Energy VS Capacity:What Determines Bluetooth Speaker Runtime?

The difference between battery energy(Wh) and battery capacity(Ah)

Battery Energy(Wh):refers to the total actual electrical energy stored in a battery.

Battery Capacity(Ah):indicates the magnitude of current that a battery can discharge.

The Core Relationship Among V, Ah, and Wh

Voltage (V) determines a battery’s energy conversion efficiency; capacity (Ah) determines its energy storage capacity and discharge capability; and energy (Wh) directly determines a device’s actual performance and runtime. These three factors work together to determine the battery’s overall performance in the device.

Capacity energy calculate:

FUN300: 7.2V × 2.5Ah = 18Wh

FUN200: 3.7V × 3.6Ah = 13.32Wh

A comparison shows that although the FUN300 has a smaller battery capacity, its higher voltage delivers a much greater total battery energy than the FUN200. Theoretically, it can achieve longer battery life without considering power consumption.

However, the actual battery life of Bluetooth speakers is directly affected by the speaker output power. Higher volume and greater output power lead to faster power consumption. Equipped with a 30W high-power output, the FUN300 consumes power much faster than the 20W FUN200, resulting in shorter actual playback time.

Tips for Choosing a Bluetooth Speaker Based on Battery Life

1. When comparing speaker batteries with different voltages, never judge battery life solely by mAh. Prioritize calculating and comparing total energy (Wh).

2.For batteries of the same voltage and type, the higher the mAh rating, the more energy they typically contain.

3. Take the speaker’s output power into consideration during selection. Higher power and louder volume cause faster power consumption, which will reduce the actual playback duration.