YellowTop Deep Cycle AGM Battery

The Optima D51R YellowTop is a high-performance deep-cycle AGM battery that utilizes SPIRALCELL technology to deliver reliable starting power and deep-cycle capability. With its 38Ah capacity and 450 cold cranking amps, it is an ideal power solution for dedicated track cars or vintage vehicles where weight reduction and vibration resistance are critical. Its spill-proof, maintenance-free design allows for mounting in virtually any position without the risk of acid leakage. This battery is a lighter-weight alternative to standard automotive batteries, weighing 26 lbs. It is important to note that this is a smaller battery with less capacity than a direct replacement factory BMW battery. If you have a car equipped with all standard factory electronics, this battery is not for you, even if you track the vehicle; you will need a full-size battery such as the Optima D35 or H6 for those applications. Due to its compact dimensions of 9.31" x 5.06" x 8.94", professional installation may require a dedicated battery mount kit to ensure a secure fit. Additionally, depending on the mounting location, original factory battery cables may not reach, and new, appropriately sized battery cables may be required for proper installation.