Before shipping our EDLC products, we thoroughly perform charging and inspection domestically to ensure we deliver reliable items. We also conduct thorough light emission tests and collect data. We recommend using items that have been inspected by the manufacturer, re-inspected, and have undergone additional repairs, providing assurance and peace of mind. We recommend purchasing reliable products. This is the strongest Maxwell EDLC capacitor, a breaker type, that maintains safe and stable operation with capacitors. The Maxwell 100F capacitor actually exceeds its capacity by nearly double, lasting 220 minutes. The capacitor's voltage retention is very high, maintaining voltage for a long period, resulting in high performance. Highly recommended product. We purchase products inspected by overseas manufacturers and then re-inspect and charge them before shipping. Product Description: Maxwell Super Carbon Capacitor EDLC 100A Breaker Type Label indicates 100F/16V, but the actual measured value is more than double, around 220 minutes (over 3 hours and 40 minutes), making it the strongest in this size. The actual measured value is more reliable and effective than the F (Farad) capacity number displayed. Body size: 27cm x 9cm x 6cm Includes a breaker on the positive cord. The product will be charged again before shipping and will be ready to use immediately. Purpose and Effects of Using an EDLC Reactor * Neutralization and removal of static electricity * Voltage supplementation and extension of the main battery's life * Capacity increase of the main battery * Voltage supplementation for electrical components (voltage supplementation for power amplifiers) * Ignition enhancement by increasing the voltage of spark plugs I have been using EDLCs for many years, and honestly, you can't really feel the effect unless the capacity is around 50F or more. With smaller capacity ones, it's more like "maybe it's good?" It's a placebo effect. It's just a feeling or a desire to believe it works because you spent money on it. The effects of this product include increased battery voltage, and the idling stop time is longer than with the battery alone. (The effect was not very noticeable with an old main battery.) The effect is even greater with a new battery. It also seems to increase the ignition power of the spark plugs, increasing low-speed torque, naturally reducing the accelerator opening, and improving fuel efficiency. In addition, it improves accelerator response and sound quality, increasing the impact of the sound volume. We will use recycled boxes for packaging.