XS Power D3478 D Series 80AH Capacity 3300 Max Power Handling, Group 78Q Deep Cycle 12V AGM Car Battery
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Ultimate Power and Perfect Fit
Power your vehicle with confidence using this 12-Volt AGM battery, built for high performance and maintenance-free convenience. Its Group 34 size ensures a perfect fit for a wide range of vehicles, making installation hassle-free. With an incredible 3,300 max amps, it delivers the instant power you need for tough starts and heavy electrical demands.
Power Through Cold Starts and Extended Backup
Experience dependable starting power even in the harshest cold with 1,012 Cold Cranking Amps, ensuring your vehicle fires up effortlessly at 0°F. With an impressive 160-minute reserve capacity, this battery provides long-lasting backup power when you need it most. Built to keep you moving, no matter the weather or conditions.
Frequently Asked Questions (FAQ)
- • Why does the D3478 feel so heavy compared with regular batteries?
The D3478 weighs about 50 pounds, so buyers replacing a lightweight OEM battery may be surprised by the difference. Its substantial AGM construction is designed for high-output applications, but weight should be considered before installation.
- • Will the D3478 physically fit my vehicle without modifying the battery tray?
Not necessarily. Although it is commonly listed around Group 78/34 sizing, vehicle trays and hold-downs vary. One Mazda owner discussing the D3478 specifically considered whether tray cutting and mounting adjustments would be necessary because the battery could be oversized for the factory location.
- • Is the D3478 overkill for a vehicle with only a small audio system?
It can be. The battery is marketed for systems around 2,500 watts as a primary battery and up to 4,000 watts as a secondary battery, so smaller stock-style electrical systems may not need this much capacity.
- • Can the D3478 actually improve voltage stability with a large amplifier?
That is one of its intended uses. With 80Ah capacity and 160 minutes of reserve capacity, the D3478 is designed to provide substantial electrical reserve for demanding audio and accessory loads.
- • Why might installation be confusing when the battery dimensions look right?
Battery group numbers do not guarantee that every vehicle uses the same terminal orientation, hold-down arrangement, or available clearance. The D3478 includes M6 terminal hardware and side-mounting terminals, so checking cable reach and terminal placement before installation is worthwhile.
- • Is the D3478 practical for a daily driver that does not have a huge stereo?
Yes, but it may be more battery than the vehicle requires. Its 1,012 CCA rating and 80Ah capacity provide considerable starting and reserve capability, while the nearly 50-pound weight and premium price can make a conventional AGM more practical for ordinary commuting.
- • What should I check if my D3478 seems weak after installation?
Before blaming the battery, inspect the terminals, ground connections, charging system, and any aftermarket equipment that could be draining power while parked. A high-capacity battery cannot compensate for excessive parasitic draw or an underperforming charging system.
- • Does the D3478 work better as a second battery for car audio?
It is specifically rated for secondary applications up to 4,000 watts, making it a strong option when an amplifier setup places substantial demand on the electrical system. Proper wiring, fusing, grounding, and charging-system capacity are still essential.
- • Is the D3478 a good choice for vehicles exposed to vibration and rough driving?
Its sealed AGM design is intended for demanding automotive environments and avoids the spill concerns associated with conventional flooded batteries. That makes it appealing for performance and modified vehicles where vibration resistance and maintenance-free operation are priorities.
- • Why do some listings show different specifications or fitment information?
Retail listings can contain inconsistent group-size descriptions, dimensions, weights, or warranty details. For example, several retailers identify the D3478 with different group terminology despite listing similar core specifications. Buyers should verify the exact D3478 specifications and vehicle fitment before ordering rather than relying only on the title of a marketplace listing.
Features:
- 12-Volt AGM Battery: A maintenance-free Absorbent Glass Mat (AGM) battery delivering 12 volts, designed for reliable, high-performance use in vehicles requiring strong starting power.
- Group 34: Specifies the battery’s standardized size, shape, and terminal layout, ensuring it fits properly in vehicles designed for a Group 34 battery.
- Max Amps 3,300: The maximum burst of current the battery can deliver instantly, providing exceptional power for demanding starts or heavy electrical loads.
- Cold Cranking Amps (CCA) 1,012: Measures the battery’s ability to deliver 1,012 amps for 30 seconds at 0°F (-18°C) without dropping below 7.2 volts, ensuring reliable starting performance in very cold conditions.
- Reserve Capacity 160 minutes: Indicates the battery can supply 25 amps continuously for 160 minutes before voltage falls below 10.5 volts, offering extended backup power if needed.
Specifications:
- BCI Group Size: Group 78Q
- Volts: 12v
- Max Amps: 3300
- CA: 1150
- CCA: 1012
- Ah: 80
- RC: 160
- Primary Watts: 2500W
- Secondary Watts: 4000W
Dimensions:
- Length (Inches): 6.89
- Width (Inches): 3.43
- Height (Inches): 6.1
- Weight (lbs): 14.6
- Weight (kg): 6.6
- UPC: 810111135184
- Weight: 49.97
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.
