The JY Power NXT 2K Lithium Ion Capacitor

The NXT 2K isn’t just another lithium battery—it’s a next-gen lithium-ion capacitor system built to deliver unmatched power density, lightning-fast discharge, and ultra-stable voltage under load. 

Engineered for everyday audio enthusiasts and high-demand electrical systems, the NXT 2K gives you explosive output in a compact, lightweight footprint that fits almost anywhere.

Proudly backed by XS Power Batteries, one of the most trusted names in energy storage, JY Power products are backed by years of proven engineering, industry experience, and real-world performance. With the NXT 2K, that legacy continues—pushing the boundaries of what’s possible in high-performance 12V systems.

Key Features:

• Lithium-Ion Capacitor Technology – Offers faster discharge and recharge than traditional lithium chemistries!
• True 3,000W+ of Continuous Output – Provides the voltage stability needed for your amplifier!
• Ultra-Low ESR – Responds instantly to high-current demands without voltage sag!
• Compact and Lightweight – Packs serious power in a form factor that maximizes installation flexibility. Less than 5lbs total weight. Multiples can be ran together to further increase performance!
• Durability By Design – Compatible with: AGM batteries, stock and high output alternators, and even other lithium chemistries! A 3 year warranty is included standard!
• 3 Year Warranty

Built for:

SPL competitors, demo vehicles, daily drivers with high-performance audio systems, and anyone needing a serious auxiliary power solution.

JY Power by XS Power Batteries—when every fraction of a volt counts, count on the NXT 2K.