20391 is a part of Varta, a German automotive and industrial battery manufacturer. 20391 is a 12 Volt, 200Ah C12 Deep Cycle Lead Acid Battery. This battery is designed for starter batteries, deep cycle applications, telecom, and outside plant applications. It features high power output, long service life, and is resistant to vibration and extreme temperatures. These batteries are usually used in golf carts, mobility scooters, marine applications, and UPS systems.