Characteristics: 1. Energy saving: The farad capacitor is able to stabilize the voltage, thus greatly facilitating power supply and saving. 2. Reliable Operation: Also comes with resistance balance function or active cells, these super capacitors are very reliable. 3. Automotive Capacitor: You can use 6pcs 2.7V 500F capacitor to build a 16V 83F automotive rectifier, meeting your working needs. 4. Practical use: Suitable for car chargers, can boost, stereo, speaker balance to extend battery life, voltage, etc. 5. Easy to install: Light weight and compact size as well, simple installation can be quickly completed in a minute. Specification: Item Type: Farad Capacitor Model: 2.7V500F Black colour Size: Approx. 35 x 60mm / 1.38 x 2.36in Feature : 1. Helps optimize backup power applications. 2. Over voltage output. 3. The life of the charge discharge cycle is up to 1,000,000 times or DC 10 years. 4. Resistance or active cell balance function. Applications: Suitable for car rectifiers, can boost, stereo, balance speakers, extend battery life, voltage, plus series fuses and wires can be paralleled on the battery. Package List : 2 x Farad Capacitor