If you are searching for a "Group 34 AGM upgrade" or a "high-output 12V battery for 2500W–4000W systems," the XS Power D3400 is the street-standard benchmark. This is the BCI Group 34 workhorse — 3300A maximum current, 65Ah (C20) capacity, and a 135-minute reserve at 25A discharge — designed for the engine bays of daily-driven trucks, full-size sedans, and custom aftermarket installations. The D3400 replaces an OEM flooded Group 34 without requiring a custom tray, re-routed hold-downs, or a voltage-regulator modification. It provides the "more battery" performance required for high-current systems without forced re-engineering of the vehicle's electrical architecture.
The Group 34 Technical Floor
Standard Group 34 flooded batteries are designed for basic engine starts, not for absorbing 4000W peak-musical transients. The D3400 rewrites that ceiling. 900 Cold Cranking Amps (0°F) and 1000 Cranking Amps (32°F) provide bulletproof start-up reliability, but the real differentiator is the 65Ah (C20) capacity paired with the 135-minute reserve. This reserve defines the window during which the battery can carry the entire electrical load — amplifier rack, cooling fans, and lighting — during alternator stall. In practical terms, it is the stability required to ride through long bass-note sustains without the voltage sag that compromises equipment longevity.
The 2500W / 4000W Dual-Disclosure
The D3400 power rating is disclosed in two brackets: 2500W as a primary source and 4000W as a secondary source. The primary rating reflects the continuous musical load the battery can support as a standalone unit — critical for 2500W daily drivers. The secondary rating reflects behavior in a charging-active installation, where the battery acts as a high-current reservoir alongside a high-output alternator to absorb the instantaneous transients of a 4000W amplifier rack. A 2500W RMS system can treat the D3400 as a fully adequate single-battery solution, while a 4000W peak-musical build should treat it as the primary anchor in a multi-battery strategy.
Fitment: Group 34, Left Polarity, OEM Tray
The D3400 adheres strictly to the BCI Group 34 envelope (10.24"L × 6.75"W × 7.20"H) with a Left polarity (L) post configuration. This matches the factory orientation for most GM, Dodge, and Chrysler vehicles, ensuring that existing positive and negative cable runs, hold-down brackets, and vent routing remain compatible. When planning a drop-in upgrade, verify the vehicle's factory battery is a Group 34 and confirm the positive terminal sits on the left when oriented with the label facing outward. Vehicles with a Right polarity (R) factory configuration should instead spec the D3400R for a mirrored post layout with identical electrical ratings.
Who Should Use the D3400
The D3400 is purpose-built for daily drivers running 2500W–4000W RMS audio systems who require a single-battery upgrade within an OEM-compatible footprint. It is the correct specification for builds utilizing a factory alternator and a mid-to-large amplifier rack that demand 12V stability. Competition SPL builds running 6000W+ or dedicated 16V architectures should instead look to the Titan8 or D1600 series, while space-constrained secondary builds should consider the compact D1200. For a documented, fitment-verified, and power-adequate 12V upgrade, the D3400 remains the industry default. Build it right at Sparked Builds.
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Description
The D Series D3400 by XS Power is a 12 volt, Group 34 high-output AGM car audio vehicle battery with a maximum current capacity of 3,300A. Cold cranking amps are rated at 900CCA. Amp hour rating is 65Ah and the reserve capacity is 135min. Wattage output as the primary source is 2,500W. Wattage output as the secondary source is 4,000W. This vehicle battery’s polarity orientation is L.
PROP 65 WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. Wash hands after handling.
For more information, visit www.P65Warnings.ca.gov
Specifications
| BCI Group Number | 34 |
| Cold Cranking Amps (@ 0°F) | 900CCA |
| Battery Voltage | 12VDC |
| Battery Series | D Series |
| Battery Polarity | Left |
| Battery Application Type | Car Audio Starting |
| Amp Hours C/20 | 65Ah |
| Secondary Watts | 4000W |
| Reserve Capacity 0°F | >135min |
| Product Brand | XS Power |
| Primary Watts | 2500W |
| Maximum Amps | 3300A |
| GTIN12 | 692209012580 |
| Dimensions | 10.24"L, 6.75"W, 7.20"H |
| Cranking Amps (@ 32°F) | 1000CA |