• NEXT-GEN LITHIUM-ION CAPACITOR POWER: Advanced lithium-ion capacitor technology delivers ultra-fast discharge and recharge, outperforming traditional lithium batteries and standard capacitors for modern high-demand 12V systems.
• STABLE VOLTAGE FOR HIGH-POWER AUDIO: Provides 3,000W+ continuous output capability with ultra-low ESR to instantly supply current during heavy bass hits, reducing voltage sag and improving amplifier performance.
• COMPACT, LIGHTWEIGHT & EXPANDABLE: Less than 5 lbs total weight with a compact footprint that fits tight installs; multiple units can be connected in parallel to scale performance as your system grows.
• BUILT FOR REAL-WORLD SYSTEMS: Fully compatible with AGM batteries, stock alternators, high-output alternators, and other lithium systems, making it ideal for daily drivers, demo vehicles, and SPL builds.
• BACKED BY PROVEN ENGINEERING: Part of the JY Power line supported by XS Power Batteries, including a 3-year manufacturer warranty for long-term reliability and confidence.

JY Power 3000 Watt Lithium Ion Capacitor 12 volt Battery For High-Demand Systems

This Listing Includes

• (1) JY Power 3000 W Lithium Capacitor Battery NXT-2KF-R2

Ultra-Fast Power Delivery for High-Demand 12V Systems

The JY Power NXT-2KF-R2 isn’t just another lithium battery. It’s a next-generation lithium-ion capacitor engineered to deliver extreme power density, lightning-fast discharge, and rock-solid voltage stability exactly when your system demands it most.

Designed for modern car audio systems and high-draw electrical setups, the NXT-2K provides explosive output in a compact, lightweight form factor that installs almost anywhere. Whether you’re chasing SPL numbers, running a hard-hitting demo vehicle, or stabilizing voltage in a daily driver, this unit is built to perform under pressure.

Proudly backed by XS Power Batteries, JY Power products benefit from decades of engineering expertise and real-world testing. With the NXT-2K, that legacy continues—pushing the limits of what auxiliary 12V power solutions can achieve.

Key Features

• Advanced Lithium-Ion Capacitor Technology: Delivers significantly faster discharge and recharge rates than traditional lithium chemistries.


• 3,000W+ Continuous Output Capability: Provides the voltage stability your amplifiers need during aggressive current spikes.


• Ultra-Low ESR Design: Instantly responds to high-current demand with minimal voltage drop or lag.


• Compact & Lightweight Construction: Less than 5 lbs total weight, making it easy to install in tight spaces. Multiple units can be linked together to scale performance.


• Durability by Design: Fully compatible with AGM batteries, stock and high-output alternators, and other lithium systems.


• Confidence Built In: Backed by a 3-year manufacturer warranty for long-term reliability.

Specifications

• Lithium-Ion Capacitor auxiliary power module


• Designed for standard 12V automotive electrical systems


• 3,000W+ continuous power output capability


• Instantaneous high-current peak discharge for voltage stability


• Technology: Lithium-Ion Capacitor (LIC)


• Continuous Output: Supports systems up to 3,000 watts


• Weight: Approximately 1.3 lbs


• Voltage Range: Operates from 8V to 16V


• Output Voltage: Typically outputs 13.5V+ during operation


• Charge/Recharge Speed: High-speed performance


• Terminal Size: Accepts up to 4 AWG power cable


• Cycle Life: Rated for 30,000–50,000 cycles


• Compatibility: Works with AGM batteries, stock/high-output alternators, and other lithium chemistries


• Form Factor: Compact and stackable for flexible installation