Smart power bank series(Smart Laptop & phone Power Bank)
Excellent Sales

Feature Specification Source
Brand BAVIN (sometimes branded as SMART)
Model PC021 or PC021S
Capacity 54,600mAh (also offered as 48,000mAh variant)
Max Power Output 150W (AC Socket)
Battery Type 18650 High Density Cylindrical Lithium Battery
AC Output 220V (Pure Sine Wave)
Other Outputs 4 x USB-A ports, 2 x Type-C ports, 1 x Micro-USB input port
Fast Charging Supports 22.5W Super Charging Protocol (SCP) and 30W Power Delivery (PD) via Type-C port
Weight Approx. 1773g (product weight)

Full Details & Description
This portable power bank is designed to be a versatile and robust power source, especially in situations where a wall outlet might not be available, such as during camping, travel, or power outages.
Functionality: The main appeal is its ability to provide a full 220V AC output socket, allowing users to plug in standard household appliances that draw up to 150W of power (e.g., laptops, fans, some TVs).
Design: It features a durable body made of PC and ABS materials, often silver in color as pictured. It includes a digital LED display to show the remaining battery level and a built-in LED flashlight for emergency lighting.
Safety: The device has a multi-protection safety system built-in to protect against overcurrent, overcharging, short circuits, and high temperatures.