XS Power D14-31 14V AGM Battery with M6 Terminal Bolts, Max 5000Amps

The D14-31 is a 14 volt AGM battery in the larger BCI Group 31 case, built for the highest current demands in a modified vehicle. Peak output reaches 5,000 amps, with 1,130 cranking amps and 994 cold cranking amps, so a high-compression engine starts in extreme heat or cold without the system dropping out. The Group 31 footprint is what separates it from a Group 34: 98Ah of capacity and 197 minutes of reserve, roughly double the runtime, which is what a large amplifier rack needs to keep playing between bursts and with the engine off. The 14 volt nominal output keeps supply voltage up under heavy load, and amplifiers produce more power when they are not fighting a sagging system. Absorbent Glass Mat construction is sealed against spills and moisture and handles vibration, so it can be mounted in a trunk, a bed, or a rack instead of only in the engine bay. At 71.65 lb it needs a proper hold-down. Both 580 and M6 terminal hardware are included. Plan for a charging system and accessories rated for 14 volt operation before adding one to a build.