Ignitions and Electrical Charging Systems

Optima

Yellow Top 34/78 Battery

$347.99

SKU: D78

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Overview

The Optima Group 34/78 Yellow Top Battery is a commercial-type battery featuring high-performance AGM technology and a Spiralcell design. This 12-volt battery provides 750 cold-cranking amps for reliable starting power. Its 34/78 group size ensures a precise fit for various vehicle applications.
Show original supplier description
The Optima Group 34/78 Yellow Top Battery is a commercial-grade power source engineered with high-performance Absorbed Glass Mat (AGM) technology and a unique Spiralcell design. This 12-volt battery delivers a robust 750 cold-cranking amps (CCA), ensuring dependable starting power even in demanding conditions. The battery's 34/78 group size is designed to offer a precise fit for a wide range of vehicle applications. Optima batteries are known for their exceptional performance and durability, offering up to 15 times more vibration resistance and a longer service life compared to conventional batteries. This dual-purpose battery is suitable for both starting and deep-cycle applications, making it ideal for vehicles with significant accessory loads, such as those with advanced electronics, sound systems, or auxiliary power needs. With its maintenance-free design, this Optima battery is virtually spill-proof and can be mounted in almost any position, providing flexibility during installation. It comes with a 36-month warranty, offering peace of mind for its users. The battery specifications include a voltage of 12 Volts, 750 CCA, AGM battery chemistry, and a commercial type classification. Its dimensions are L: 10.06'' x W: 6.93'' x H: 7.87'', and it weighs 43.50 lbs.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandOptima
Part NumberD78
CategoryIgnitions and Electrical

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy