Batteries
Are XS Power Batteries Good? Honest Brand Review (2026)
Is XS Power good? An honest review of the car audio battery brand: AGM vs lithium vs Titan8 LTO lines, what they cost, how they hold up, and which XS Power battery fits your build.
Best Car Audio Battery in 2026: AGM & Lithium Picks by Power Level
The best battery for car audio at every power level: AGM picks under $150, lithium for 3,000W+ builds, and XS Power Titan8 LTO for competition — with honest sizing guidance by system wattage.
How to Add a Second Battery for Car Audio (Wiring Guide 2026)
Learn how to add and wire a second battery for car audio — when you need one, AGM vs lithium, isolators, and a step-by-step wiring diagram — plus the batteries you need in stock.