SPECIFICATION
Operating Voltage: Typically ranges between 2V to 6V depending on the exact variant (e.g., 5.5V or 6V are common for phone-charging kits).
Output Power: Usually between 0.5W and 2W.
Working Current: approx 60mA to 200mA.
Dimensions: Highly pocketable, ranging from roughly 30mm x 36mm to 110mm x 60 mm.
Service Life: Approximately 3 to 5 years under normal usage.

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