The TOPPING G5's playtime varies depending on the source or inputs and different gain settings. It offers more than 9 hours in USB mode with the gain settings set to low or medium and more than 6.5 hours when the gain setting is high. In Bluetooth mode, G5 offers more than 10 hours of battery life with gain settings set to low or medium and more than 8 hours when the gain setting is high. TOPPING G5 offers a whopping 25 hours of battery life when operated in AUX mode with gain settings set to low or medium and more than 13 hours with gain settings high.