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The battery run duration of an Anker Power Bank (20,000mAh, 30W) before depletion depends on multiple factors, such as device charging consumption, your usage patterns, and energy conversion efficiency. Here are the details: Battery Capacity and Usage: The internal capacity is 20,000mAh at 3.7V. However, due to energy conversion, the effective rated output at 5V is lower. The estimated usable capacity for charging devices is roughly about 16,000mAh (considering typical conversion and circuit losses). Device Charging: For fast-charging smartphones, tablets, or small devices, it provides multiple charges depending on their battery capacities. For instance, a typical smartphone with a 3,000mAh battery could be charged approximately 5 times. Recharging the Power Bank: Using a 30W PD wall charger, the power bank can recharge in about 4-4.5 hours. Finally, actual battery runtime varies based on the connected device’s battery size, charging habits, and power fluctuations during use.
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