When selecting accessories like chargers, cables, or power banks, prioritize technical compatibility and safety. For charging cables, ensure they support high-speed data transfer (USB 3.0 or higher) and Fast Charging protocols (PD 3.0/QC 4.0). For power banks, verify the conversion efficiency rate and the use of Lithium-polymer batteries for better safety. For protective cases, check for military-grade drop protection (MIL-STD-810G) and precise mold accuracy to ensure a perfect fit for specific phone models.