DescriptionMade of high-quality materials, not easy to corrode and age, long service life. High precision and stability, very convenient and practical. Featuring fast charges and discharges, large capacity, good low temperature and high power density.Features-Color: Blue.-Material: Aluminum Alloy.-Size: About6.20X3.50X3.50cm/ 2.44X1.38X1.38in.-Nominal capacity: 2.85V400F. -Tolerance: 10%. -Equivalent series resistance (ESR): None. -Operating temperature range: -20-75. - Long life, durable and practical, and fast charging and other advantages.-With active monomer equalizer function, general used in automotive industry.-This is a very professional and practical farad condenser, which will bring you a good experience.-Applies to car rectifier, can improve stereo/speaker, extended battery life.-Increase the engine power to make the throttle response more brisk and sensitive.