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Large Capacitance Long Cycle Life Waterproof Type Electric Double Layer 2.7V 3.0V 120f 330f 400f Supercapacitor. Long Cycle Life: Capable of 500,000 charge-discharge cycles for durable performance. Wide operating temperature range, stable performance in harsh environments. Low Internal Resistance: Internally series-connected structure ensures efficient energy transfer. High Reliability: Suitable for long-term use in high-temperature and high-humidity environments. Versatile Applications: Used in power electronics, new energy, security, and consumer electronics.