Solar Battery Storage Systems San Diego | Sol-Ark + ECHO LiFePO4 | 30% Tax Credit | SunFusion Energy

Sol-Ark Whole-Home Inverters

The brain of your energy system. Sol-Ark hybrid inverters seamlessly manage solar panels, batteries, grid power, and generators with industry-leading reliability.

Best Seller

Sol-Ark 15K-2P

Whole-Home Hybrid Inverter

The most versatile 48V hybrid inverter on the market. Perfect for powering entire homes with seamless backup and EV charging support.

15kW
Continuous
200A
Passthrough
275A
Battery Charge
<5ms
Transfer
  • 3 MPPT solar inputs, 19.5kW max solar
  • 48V battery agnostic - works with all chemistries
  • NEMA 3R rated for indoor/outdoor installation
  • Built-in 200A load breaker - no subpanel needed
  • Time-of-Use (TOU) optimization built-in
  • WiFi monitoring & color touchscreen
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Max Power

Sol-Ark 18K-2P

Maximum Capacity Hybrid Inverter

The most powerful 48V hybrid inverter available. Designed for large homes, commercial applications, and high-demand scenarios.

18kW
Continuous
28.8kW
Max Solar
350A
Battery Charge
IP65
Rating
  • 3 MPPT controllers with 6 DC solar ports
  • 350A battery charging - fastest in class
  • IP65 all-weather protection
  • UL 1741 & California Rule 21 certified
  • Virtual Power Plant (VPP) ready
  • Commercial-grade reliability
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🔌

48V Compatible Inverters

Flexible System Options

Beyond Sol-Ark, we support a range of quality 48V hybrid inverters to meet every budget. All compatible with ECHO batteries and Daly Smart BMS.

5-18kW
Power Range
48V
Battery Voltage
Multi
Brand Options
UL
Certified
  • Budget-friendly options available
  • All models 48V ECHO battery compatible
  • Hybrid grid-tie with battery backup
  • Off-grid capable configurations
  • Works with Guardian E2.0 Tower
  • Contact us for recommendations
Explore Options →

ECHO LiFePO4 Battery Modules

Store solar energy for use anytime with ultra-safe LiFePO4 chemistry. Integrated Daly Smart BMS provides comprehensive protection and WiFi monitoring from anywhere.

Professional
🔋

ECHO 2.0

Professional Grade LiFePO4 Module

Proven reliability with professional-grade LiFePO4 cells. Exceptional cycle life and consistent performance with integrated Daly Smart BMS.

14.3kWh
Capacity
92%
DoD
16K+
Cycles
250A
Continuous
  • Ultra-safe LiFePO4 chemistry - no thermal runaway
  • Integrated Daly Smart BMS with WiFi monitoring
  • 16,000+ cycles = 25+ years daily use
  • Stack up to 16 modules (228 kWh total)
  • Compatible with Sol-Ark & all 48V inverters
  • UL certified for safety
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Next-Gen
🔋

ECHO 3.0

Next-Generation LiFePO4 Module

Our most advanced battery module featuring Grade-A cells, 98% depth of discharge, and 400A peak power with AI-powered BMS analytics.

16.38kWh
Capacity
98%
DoD
16K+
Cycles
400A
Peak
  • Grade-A cells with 98% usable capacity
  • 400A peak discharge for high-power loads
  • Advanced Daly BMS with AI analytics
  • Extended temp range: -40°C to 60°C
  • WiFi + Bluetooth dual connectivity
  • Hot-swappable modular design
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Daly Smart BMS Technology

The intelligent guardian of your battery system. Comprehensive protection, active balancing, and WiFi monitoring from anywhere via mobile app.

Smart
🧠

Daly Smart BMS 48V

16S LiFePO4 Battery Management System

Professional-grade 48V battery management with comprehensive protection and smart connectivity. Monitor from anywhere with the mobile app.

16S
48V Config
30-500A
Current Range
±10mV
Accuracy
WiFi
Monitoring
  • Overcharge & overdischarge protection
  • Overcurrent & short circuit protection
  • Temperature monitoring & protection
  • Active cell balancing (100mA+)
  • 2-in-1 Bluetooth + WiFi connectivity
  • CAN/RS485 communication interfaces
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High Voltage

Daly 48S 144V BMS

High Voltage LiFePO4 Protection

Professional high-voltage BMS for 144V battery systems. Perfect for larger solar installations, commercial applications, and high-voltage inverter compatibility.

48S
Cell Config
144V
Nominal
60A
Continuous
Smart
Monitoring
  • 48S configuration for 144V LiFePO4 systems
  • 60A continuous charge/discharge current
  • High-voltage inverter compatible
  • Full smart BMS with WiFi/Bluetooth
  • Cell-level monitoring & balancing
  • Ideal for commercial solar systems
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Guardian E2.0 Energy Systems

Turnkey energy storage with everything included. Sol-Ark inverters, ECHO batteries, Daly Smart BMS, and NEMA 3R fire-protected enclosures with WiFi monitoring.

🛡️
48kWh Storage NEMA 3R

Guardian E2.0

Complete 48kWh Whole-Home System

The ultimate whole-home backup solution. Sol-Ark 15K or 18K hybrid inverter with three ECHO battery modules in a NEMA 3R weatherproof enclosure with integrated fire protection.

48kWh
Storage
15-18kW
Output
24+ hrs
Backup
System Includes
  • Sol-Ark 15K or 18K Inverter
  • 3x ECHO 2.0 or 3.0 Modules
  • Integrated Daly Smart BMS
  • NEMA 3R Outdoor Enclosure
  • Fire Protection System
  • WiFi Monitoring Module
  • All Wiring & Connections
  • Professional Installation
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🏢
32-96kWh Scalable

Guardian E2.0 Tower

Scalable 32kWh to 96kWh System

Modular tower design that grows with your needs. Start with 32kWh and expand to 96kWh. Compatible with Sol-Ark and other quality 48V inverters.

32-96kWh
Capacity
2-6
Modules
Your Choice
Inverter
System Includes
  • Your Choice of 48V Inverter
  • 2-6 ECHO 2.0 or 3.0 Modules
  • Daly Smart BMS per Module
  • NEMA 3R Tower Enclosure
  • Integrated Fire Protection
  • WiFi Web App Monitoring
  • Hot-Swappable Design
  • Future Expansion Ready
Configure Your System →

NEMA 3R Fire-Protected Enclosures

Professional outdoor-rated enclosures designed to protect your investment. NEMA 3R certified for all-weather installation with integrated fire protection.

🌧️

Weather Protection

NEMA 3R rated for outdoor installation. Protects against falling rain, sleet, snow, and external ice formation.

🔥

Fire Protection

Integrated fire suppression and thermal management. Multi-layer protection with fire-resistant materials.

💨

Active Ventilation

Filtered cross-flow ventilation keeps batteries at optimal temperature for longevity and performance.

🔒

Secure Access

Padlockable doors with quarter-turn latches and rubber gasket seals for security and weather resistance.

📱

WiFi Monitoring

Monitor your entire system from anywhere with WiFi. Check battery status and alerts via mobile app or web.

🏗️

Modular Design

Tower enclosures accept 2-6 battery modules with space-efficient vertical stacking. Expand anytime.

Your 24/7 Energy System

Understanding how your Sol-Ark inverter and ECHO batteries work together to power your home around the clock.

☀️

Solar Collection

Solar panels generate DC electricity during daylight hours

Smart Conversion

Sol-Ark converts DC to AC and manages all power flows

🔋

Battery Storage

Excess energy charges ECHO batteries via Daly BMS

🌙

Night Power

Batteries power your home after sunset

🛡️

Backup Ready

Automatic <5ms switch during grid outages

Frequently Asked Questions

Everything you need to know about our solar and battery storage systems.

What is the difference between ECHO 2.0 and ECHO 3.0 batteries?+
ECHO 2.0 provides 14.3 kWh capacity with 92% depth of discharge and 250A continuous discharge. ECHO 3.0 offers 16.38 kWh with 98% depth of discharge and 400A peak discharge, featuring Grade-A+ premium cells and extended temperature operation from -40°C to 60°C. Both use ultra-safe LiFePO4 chemistry with 16,000+ cycle life (25+ years) and include integrated Daly Smart BMS with WiFi monitoring.
What is a Daly Smart BMS and why is it important?+
The Daly Smart BMS (Battery Management System) is the brain of your battery storage. It provides comprehensive protection including overcharge, overdischarge, overcurrent, short circuit, and temperature protection. The Smart feature includes Bluetooth and WiFi connectivity for monitoring battery status from anywhere using the mobile app or web interface.
What does NEMA 3R rating mean for the enclosure?+
NEMA 3R is an industry standard for weatherproof outdoor enclosures. It protects against falling rain, sleet, snow, and external ice formation. You can install your system outdoors without building a separate structure. Our enclosures also include integrated fire protection and filtered ventilation.
How does Sol-Ark 15K compare to Sol-Ark 18K?+
The Sol-Ark 15K provides 15kW continuous output with 200A grid passthrough and 275A battery charging - perfect for most homes. The Sol-Ark 18K offers 18kW continuous output with 350A battery charging and supports up to 28.8kW of solar input - ideal for larger homes or commercial applications.
What is the 30% federal solar tax credit?+
The federal Investment Tax Credit (ITC) allows you to deduct 30% of your total solar and battery storage system cost from your federal taxes. This includes solar panels, inverters, battery storage, and installation. This incentive is available through 2032.
How long do ECHO batteries last?+
ECHO LiFePO4 batteries are designed for 16,000+ charge cycles, equivalent to 25+ years of daily use. Even after 10,000 cycles, they maintain 80% of original capacity. The Daly Smart BMS optimizes charging patterns to maximize lifespan.
Can I expand my Guardian E2.0 Tower system later?+
Yes! The Guardian E2.0 Tower is designed for scalability. Start with 32kWh (2 ECHO modules) and expand to 96kWh (6 ECHO modules) as your needs grow. You can also upgrade your inverter or add parallel units for more power capacity.

Ready for Energy Independence?

Get a free consultation and custom system design. Discover how much you can save with solar + storage and the 30% federal tax credit.

(800) 544-0282