Authorized dealer · Car Audio Bargain

12 Volt Batteries

Nearly every car, truck and powersports vehicle runs a 12V electrical system, and 12 volt car audio batteries from XS Power are built for that standard setup. Choose D series main batteries, XP secondary reserve batteries for the trunk, S series racing models or compact PSX powersports units.

All are sold by an authorized XS Power dealer in Newton, North Carolina, with free shipping on orders over $250.

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  • Free shipping over $250
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90 products

Choosing 12 Volt Car Audio Batteries

Start with the job the battery will do. Under the hood, a main battery has to start the engine and feed the system, so the XS Power D series, including the D375 and D3478 Group 78, is a natural fit. For amplifiers in the trunk or cargo area, an XP secondary reserve battery such as the XP750, XP950, XP1500, XP2000, XP2500 or XP3000 adds capacity close to the load and shortens the high-current cable run. S series racing models like the S375 and S975, plus the PSX14L, PSX14Q and PSX20Q, serve lightweight and powersports builds.

Sizing for Your Amplifiers

Higher amplifier wattage means more current on every bass note, and more battery capacity helps hold voltage up while the alternator catches up. A modest system may only need a strong main battery, while larger systems often add one or more 12 volt car audio batteries as reserves. Remember that batteries only store energy; if the system draws more on average than the alternator produces, the bank will slowly drain and a charging upgrade is needed.

Wiring Multiple 12V Batteries

When you link batteries in parallel, use the same voltage and, ideally, the same chemistry and similar age, and connect them with cable sized for the full current and run length. Put a fuse at each end of a long cable between batteries so either battery is protected against a short. If you want to mix AGM and lithium, an isolator is the safer approach. Heavy 1/0 AWG power wire is common for these runs.

Related Options

For 12-volt LiFePO4 and LTO choices, see lithium car audio batteries. A matching 12V charger keeps a reserve bank topped off, and the full electrical department has the rest of your power upgrade. Systems that outgrow the stock charging system can step up to a high-output alternator without changing battery voltage.