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“Compatible” describes whether it works. “Required” or “Useful” describes whether you should buy it.
Samsung · Part EP-P5400
Samsung confirms Fast Wireless Charging 2.0 across the Galaxy S25 lineup and lists its Wireless Charging Pad as a supported charging accessory.
Use a compatible Samsung USB-PD power adapter; the watch-side charging area is reserved for supported Galaxy wearables.
Samsung · Part EP-P2400
Samsung confirms Fast Wireless Charging 2.0 across the Galaxy S25 lineup and lists its Wireless Charging Pad as a supported charging accessory.
Use a compatible USB-C power adapter; actual wireless charging speed varies by model, placement, case, and conditions.
Open the evidence, limitations, and model identity for a single accessory.