Large-capacity power bank with 40000mAh polymer lithium-ion battery, featuring an LCD display and available in Chinese red or black colour, measuring 156 x 82 x 41 mm with an 85% conversion rate for general charging needs
Large-Capacity 40000mAh Power Bank with LCD Display for General Charging Needs

Designed for users requiring substantial portable power, this power bank delivers 40000mAh of capacity from its polymer lithium-ion battery. It is built into a plastic shell and features a practical LCD screen that displays charge status. Available in distinct Chinese red or black colourways, the unit measures 156 x 82 x 41 mm, making it a substantial yet portable power solution suitable for charging a wide array of general electronic devices during travel, outdoor activities, or power outages. Its specified 85% conversion rate indicates the efficiency of the power transfer process from the bank's internal battery to your connected gadgets.
Features and Construction

The power bank combines high-capacity battery technology with functional design elements aimed at reliable, portable charging.
Material and Build
The unit is constructed using a polymer lithium-ion battery, specified as a soft bag type, housed within a durable plastic shell. This material choice contributes to the product's overall form factor and weight. The shell is available in two colour options: a vivid Chinese red and a classic black, offering a choice based on user preference.
Size and Practical Fit
With dimensions of 156 millimetres in length, 82 millimetres in width, and 41 millimetres in depth, the power bank has a defined rectangular shape. These measurements determine its portability and how it will fit into bags, backpacks, or luggage, providing a substantial power reserve in a managed physical space.
Uses and Placement

Its high capacity and general compatibility make this power bank versatile for various charging scenarios where mains electricity is unavailable or inconvenient.
Event or Professional Use
The 40000mAh capacity is suitable for professional settings, events, or fieldwork where multiple devices like smartphones, tablets, or portable hotspots may need prolonged power. The LCD display allows for easy monitoring of remaining charge, which is useful for planning usage over extended periods away from power sources.
Everyday Home Use
At home, it serves as a reliable backup power source during outages or for conveniently charging devices in rooms without easy access to power sockets. Its capacity allows it to fully charge a typical smartphone multiple times, reducing the need to search for available wall chargers.
Benefits and Buying Value

The value of this power bank lies in its combination of high capacity, functional display, and specified efficiency, providing a practical solution for portable power needs.
Reuse and Low Maintenance
As a rechargeable unit, it can be used repeatedly. The polymer lithium-ion battery technology is common in portable electronics. Basic care involves keeping the unit clean, avoiding exposure to extreme temperatures or moisture, and following general guidelines for lithium-ion battery maintenance to support its lifespan.
Why Choose This Product
This power bank is distinguished by its explicitly stated 40000mAh capacity, the inclusion of an LCD display for charge status, and its published 85% conversion rate—a concrete specification indicating power transfer efficiency. The choice between Chinese red and black colours adds a personalisation element, while its defined 156 x 82 x 41 mm dimensions provide clear expectations for its size.
