I bought this VCP12K battery and the 0 gauge Flex cable. The battery is super lightweight and for the power it supports it's very small in comparison to others in the same league. It has three positive terminals for multiple amp setups and three negative terminals for multiple ground locations. It's super versatile for all your car audio needs. There's no charging when you receive the battery, it's plug in and play making it very easily to use. It also supplies constant power on those big bursts or just easy bass drops. Voltage rated anywhere from 12 volts and up. High output alternator with high voltage is not an issue with this battery. Check out my many videos and demo's on YouTube, TikTok, Facebook and Instagram. [email protected], or subsandpaws. Factory alternator, high output alternator, this works great on either. On a factory alternator you can run about 3,000 watt's without any issues. High output alternator, I myself have run close to 10,000 watt's and barely lost any voltage and it shoots right back up even on the most demanding song's. In short this is a revolutionary battery for the car audio world and if you don't have one or more what are you waiting for. I waited year's to get a lithium battery and now I wouldn't recommend anything but. If you're debating on what to buy look no further, you found it.