Optima YellowTop D34/78 Dual-Purpose AGM Deep Cycle Battery

The Optima YellowTop D34/78 is a premium dual-purpose AGM battery designed to deliver powerful starting performance and superior deep-cycle capability. Built with Optima’s advanced SpiralCell® Technology, it provides consistent power output, faster recharging, and enhanced durability compared to conventional flat-plate batteries.

Whether you’re running a high-performance car audio system, off-road accessories, winches, inverters, or other power-hungry electronics, the YellowTop D34/78 is engineered to handle heavy electrical loads while maintaining dependable starting power. Its sealed AGM construction is maintenance-free, spill-proof, and can be mounted in multiple positions for flexible installation.

Designed for trucks, SUVs, commercial vehicles, off-road builds, and custom audio installations, this battery offers outstanding reserve capacity and deep-cycle performance, allowing it to recover from repeated discharge and recharge cycles without compromising reliability.

Key Features

✔ Dual-purpose starting and deep-cycle AGM battery

✔ 750 Cold Cranking Amps (CCA)

✔ 870 Cranking Amps (CA)

✔ 55Ah Battery Capacity

✔ 120 Minutes Reserve Capacity

✔ Advanced SpiralCell® Technology

✔ Up to 15x More Vibration Resistant

✔ Faster Recharging Capability

✔ Maintenance-Free Design

✔ Spill-Proof Sealed AGM Construction

✔ Dual Top & Side Terminal Design

✔ Ideal for High-Power Audio Systems

✔ Suitable for Winches, Inverters & Heavy Accessories

✔ Mountable in Multiple Positions

Specifications

• Brand: Optima
• Model: YellowTop D34/78
• Battery Type: AGM (Absorbent Glass Mat)
• Voltage: 12V
• Capacity: 55Ah
• Cold Cranking Amps: 750A
• Cranking Amps: 870A
• Reserve Capacity: 120 Minutes
• Group Size: 34/78
• Terminal Type: Dual (Top Post & Side Post)
• Dimensions: 10.06″ L × 6.94″ W × 7.88″ H
• Weight: 43.5 lbs (19.7 kg)
• Application: Automotive, Trucks, SUVs, Off-Road, Car Audio Systems, Commercial Vehicles