XS Power xMAX 135 12V Lithium Car Audio Battery
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At 135Ah of usable lithium capacity and a continuous power handling figure that dwarfs traditional batteries, the XS Power xMAX 135 is purpose-built for the most demanding high output SPL builds on the market. This LiFePO4 / LFP battery delivers sustained, stable voltage through extended competition runs and back-to-back musical hammerings without the sag that kills scores and sound quality. Builders who have graduated past the limits of lead-acid chemistry — and even past conventional lithium packs — find that the xMAX 135 simply keeps up where others tap out.
Deep Capacity, Zero Excuses
As a primary lithium car audio battery or the anchor of a multi-battery supplemental system, the xMAX 135 offers deep cycle endurance alongside explosive current delivery. Its low internal resistance keeps voltage drop minimal even when multiple amplifiers are swinging hard simultaneously, making it as effective in a wall build as it is in a competition vehicle chasing record numbers.
Specifications
| BCI Group Size | Group GC12 |
| Volts | 12 |
| Max Amps | 12400 |
| CA | 135 |
| CA Pb Eq | 540 |
| Ah | 135 |
| Ah Pb Eq | 540 |
| Energy Wh | 1782 |
| Wattage Support | 30000 |
| Polarity | L |
| Warranty | 4 Year Warranty — view warranty (PDF) |
| Instructions | Download instructions (PDF) |
| Length (Inches) | 15.12 |
| Width (Inches) | 11.5 |
| Height (Inches) | 9.25 |
| Weight (lbs) | 46.7 |
| Weight (kg) | 21.18 |
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
