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Authorized dealer · Car Audio Bargain
Lower weight, high discharge capability and steady voltage under load make lithium car audio batteries popular in high-power and racing builds. XS Power offers two chemistries here: LiFePO4 in the xMAX series and lithium titanate (LTO) in the PWR, RSV and XV lines, plus Li series racing batteries.
Car Audio Bargain is an authorized XS Power dealer, and we can help you match a lithium bank to your amplifier power.
Both chemistries are lithium, but they behave differently. LiFePO4 (lithium iron phosphate) offers a lot of usable capacity for its weight and is a common choice for a reserve battery in a daily system; the xMAX 45, 67, 90 and 135 are examples. Lithium titanate, or LTO, trades some capacity for very high charge and discharge rates, long cycle life and good cold-weather performance, which suits demanding competition and starting duty. The RSV-23, RSV-46, PWR-S5-20Q and XV30Q are LTO models, while the PWR-S7-1600BMS and Li-D1600XR are 16-volt lithium racing batteries.
Lithium batteries often want a different, and sometimes higher, charging voltage than a factory system designed around lead-acid provides. Check each battery's recommended charging range against your alternator's actual output; if it falls short, a voltage boost harness or adjustable regulator can raise it. Use a charger with a lithium-specific profile from our chargers collection, and avoid lead-acid desulfation or equalization modes, which can damage lithium cells.
Lithium options here span 12V, 14V and 16V, and the higher-voltage versions are only for builds whose charging system and electronics are rated for them. Confirm BCI group size, such as Group 20/20L, 30/30L or 34, along with terminal orientation before ordering. When you combine lithium with another battery in parallel, keep voltage and chemistry matched or use an isolator. Compare the 14 volt batteries if you are planning a higher-voltage build.
Lithium car audio batteries can deliver very high current, so protect every run with correctly sized fuses and fuse holders and use cable heavy enough for the current and length. Pair the bank with a high-output alternator if the system draws more than the charging system can replace, and browse the full electrical department for wiring and accessories.
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