One of the main differences in these models is how much charging “juice” they can store, referenced in watt-hours. Watt-hours are a measure of a unit of energy (watts) that can flow over time (hours). Consider.
[pdf] Portable energy storage power supplies must achieve large-capacity energy storage and safe and stable output within a limited volume, which is inseparable from the synergy of high-performance batteries, advanced circuit management, multiple safety protections and intelligent scheduling systems.
[pdf] Power Supply Considerations: A mobile radio typically runs off a 12-volt DC power supply, which is provided by the car battery when the vehicle is running. To use the radio as a base station, you will need to provide a stable power supply. This can be done in several ways:
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