Deka 9A78 Vehicle Battery

Deka Intimidator AGM Battery 9A78

The Deka Intimidator AGM battery 9A78 is built for strong starting performance, steady reserve power, and long service life in demanding electrical systems. With 750 CCA, 860 CA, and 120 minutes of reserve capacity, it supports vehicles that need reliable cranking and accessory power in one battery.

Compatible With Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, GMC Savana 3500, and many other BCI Group 78 applications, this Deka Intimidator - AGM battery uses absorbed glass mat technology for improved vibration resistance and dependable output.

Key Features

• Absorbed Glass Mat (AGM) technology for sealed, maintenance-free operation
• Dual-purpose starting and accessory power design
• 750 CCA and 860 CA for strong cold-weather cranking
• 120-minute reserve capacity for sustained electrical demand
• BCI Group Size 78 with side post terminals
• Left positive polarity and side-left positive terminal location
• OE-style case and cover configuration for easier application fitment
• Built for vibration resistance in towing, off-road, and high-load use

Product Line Overview

The Deka Intimidator - AGM line is aimed at vehicles and equipment that need both starting power and accessory support. Its tight-pack plate and separator construction helps the battery handle repeated vibration and electrical load from stereo systems, winches, hydraulic lifts, boats, RVs, and onboard electronics.

Detailed Description

Part number 9A78 is a 12-volt AGM vehicle battery with a 55 amp-hour rate and a 43-pound case designed around Group 78 dimensions: 10.7500 inches long, 6.8750 inches wide, and 7.2500 inches high. The side post end type and T048/T047 terminal type make it a direct-style replacement for many GM truck, van, SUV, and performance applications. This part cross-references Bosch S6563B and Dayco AP78 for the same application.

For buyers searching for a Deka 9A78 battery for Chevrolet Express 3500 or a Deka Intimidator AGM battery for GMC Savana 2500, this unit delivers the electrical specs and physical layout needed for a clean replacement in supported applications.

Common Uses

• Slow cranking or weak starting in cold weather
• Voltage drop under accessory-heavy electrical loads
• Battery vibration issues in trucks, vans, and off-road vehicles
• Reserve power needs for audio, electronics, and auxiliary equipment
• Replacement for worn Group 78 AGM batteries in supported fitments

Installation Notes and Tips

Verify Group 78 size, side post terminal layout, and left-positive polarity before installation. Confirm the vehicle’s OE CCA requirement against the listed fitment notes, especially on Chevrolet Express, GMC Savana, Silverado, Sierra, Tahoe, and related applications. Clean the cable ends and mounting area before connecting the battery, and make sure the battery is secured correctly to reduce vibration-related wear.

Quality Assurance

Deka’s Intimidator AGM construction uses tight-pack internal plate and separator design to improve durability under vibration and repeated electrical demand. The OE-style case and cover configuration supports easier application matching across a wide range of vehicles from 1966 through 2026 fitments listed for this part.