"Capacity: Typically 10000mAh (e.g., J49, J100, J108 models).
Charging Speeds: Support fast charging protocols, including Power Delivery (PD) and Quick Charge 3.0 (QC3.0), with maximum outputs often around 18W to 22.5W.
Ports: Common configurations include one or more USB-A outputs and Micro-USB/Type-C inputs and outputs.
Display: Feature either an LED digital display or simple LED indicator lights to show the remaining power level.
Material: Built with ABS + PC flame retardant materials for safety and durability. "