20000mAh power bank black customised portable charger with 80% conversion rate general purpose cylindrical lithium-ion battery pack measuring 135x60x20mm includes charging cable plastic shell design
20000mAh power bank portable charger with 80% conversion rate and included charging cable

This black portable power bank provides 20000mAh of charging capacity for general-purpose electronic devices when mains power isn't accessible. Measuring 135mm long by 60mm wide by 20mm thick, it offers substantial power storage in a compact plastic casing that fits easily into bags or pockets. With an 80% conversion rate from its cylindrical aluminium-shell lithium-ion batteries, it delivers practical charging performance for everyday electronic devices. The included charging cable allows immediate use with various compatible gadgets and mobile devices.
Features and Construction

The power bank combines substantial capacity with practical design elements for portable charging needs. Its construction focuses on delivering reliable power transfer while maintaining a manageable size for transport.
Material and Build
The power bank features a plastic outer shell that provides basic protection for the internal components during handling and transport. Inside, it uses cylindrical aluminium-shell lithium-ion battery cells of the 18650 type, which are industry-standard components for portable power solutions. This combination of materials creates a lightweight yet functional power bank suitable for regular use.
Size and Practical Fit
Measuring 135mm in length, 60mm in width, and 20mm in thickness, this power bank offers substantial capacity while maintaining a compact profile. These dimensions allow it to fit comfortably in most bags, backpacks, or larger pockets. The rectangular shape with rounded edges facilitates easy packing and storage alongside other everyday carry items.
Uses and Placement

This general-purpose power bank serves multiple charging scenarios where access to mains electricity is limited or unavailable. Its substantial capacity supports extended use away from traditional power sources.
Event or Professional Use
During events, conferences, or professional situations where power outlets may be scarce or occupied, this 20000mAh power bank provides backup charging for essential devices. The included charging cable allows connection to various smartphones, tablets, or other portable electronics that professionals rely on throughout long days away from mains power.
Everyday Home Use
For home use, this power bank serves as a convenient backup charging solution during power outages or when moving between rooms without accessible power sockets. Its substantial capacity can provide multiple charges for typical smartphones, allowing family members to maintain communication and access to devices even when temporarily disconnected from wall outlets.
Benefits and Buying Value

The power bank offers practical advantages through its substantial capacity, included accessories, and general-purpose compatibility that make it a useful addition to portable power solutions.
Reuse and Low Maintenance
The power bank's design allows for repeated charging cycles, making it a reusable solution rather than single-use battery packs. Its plastic casing requires minimal maintenance beyond keeping it clean and dry, with no specialist care instructions needed beyond basic handling precautions for electronic devices.
Why Choose This Product
This power bank provides 20000mAh of capacity in a compact package that includes a charging cable for immediate use. The 80% conversion rate offers practical charging performance for general-purpose electronic devices, while the plastic casing and aluminium-shell batteries create a functional power bank suitable for everyday charging needs away from mains electricity.


