XS Power xMAX 90-DIY 12V Lithium Car Audio Battery
Many in-stock orders ship within 1-2 business days, but timing varies by item. Custom, built-to-order, oversized, special-order and supplier-direct products may need extra processing time. Free shipping applies to qualifying orders over $99 in the contiguous US. Approved returns may be subject to a restocking fee.
Most products are covered by the manufacturer's warranty against defects. Damage from over-powering or improper installation isn't covered — we'll help coordinate any valid claim.
Tell us your vehicle, subwoofers and electrical setup and our team will help you match the right gear. Reach out before you buy.
Built for the installer who wants to source their own hardware and do it right, the XS Power xMAX 90-DIY delivers serious LiFePO4 / LFP battery capacity at a weight that leaves lead-acid batteries far behind. At just 25 lbs, this lightweight lithium battery packs enough capacity to support massive amplifier arrays that would crush an AGM bank twice the size.
The DIY Builder's High-Output Lithium Platform
Serious about SPL competition or just building the loudest daily on the block? The xMAX 90-DIY functions as both a primary lithium car audio battery and a standalone supplemental battery, with true deep cycle lithium capability that bounces back charge cycle after charge cycle. Its low voltage drop battery characteristics keep your headlights bright and your woofers pounding — a genuine high output SPL battery platform for builders who spec their own systems.
Specifications
| Chemistry | 12-Volt Lithium (LFP) |
| Voltage | 12V |
| Max Voltage | 14.8V |
| Max Wattage (Burst) | 20,000 |
| Amp Hours | 90 |
| Terminal Hardware | M6 (Included) |
| Balancer | Active Balancer Included |
| Mounting | In-Cabin Mounting Only |
| Weight | 26.90 lbs |
| Dimensions (L x H x W) | 13.82 in x 7.88 in x 7.46 in |
| Warranty | 4-Year |
Requires a lithium battery charger — see the Li1208, Li1215 and Li1225 here.
Authorized XS Power dealer at JS Ultimate Sounds. Free shipping on orders $99+.
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
