Off-Grid Systems

• Lowest cost per kwh
• high capacity - 15kwh
• Total energy independence
• 12-Year US Warranty

• Highest Scalability - 15 parallel units providing 225kWh
• Smart Thermal Management - All-climate performance control
• Advanced Integrated BMS - Intelligent safety oversight

The NEXUS delivers 15kWh of high-capacity LiFePO₄ power engineered for complete off-grid independence. With 300Ah capacity, 100A continuous discharge, and peak support up to 110A, it handles heavy-duty loads with ease. Its rugged, floor-standing design and integrated BMS with thermal suppression ensure safe, long-lasting performance in any environment. NEXUS supports parallel expansion up to 15 units for 225kWh total capacity and seamless communication through RS485, CAN, and RJ45. Compatible with EG4 6000XP or 12000XP inverters, NEXUS provides flexible, scalable energy for homes, cabins, or commercial backup systems.

• Lowest System Price
• Easiest Installation
• Modular Capacity
• 12-Year US Warranty

• Reliable Redundancy – Full power from multiple independent modules
• Ultra Thin Low Profile - Save space with sleek design
• Single Person Install - Lighter modules & one person install

The BigBattery ETHOS Off-Grid System is a complete power solution for cabins, tiny homes, and homesteads. With modular & stackable 5.12kWh batteries, ETHOS effortlessly scales alongside your growing energy needs. Each unit features an IP65-rated enclosure, thermal suppression, and an advanced BMS with auto-balancing for maximum safety. Paired with EG4 inverters - 6000XP, 12000XP, or the 18kPV Hybrid - you get seamless UPS backup, smart load control, and AC coupling. ETHOS delivers reliable, expandable, and efficient off-grid energy independence.

• Most Compact
• Live App Monitoring
• Vibration resistant
• 12-Year US Warranty

• Rugged Protection – Durable weather-ready shielding
• Low Voltage Reset Technology – Prevents battery bricking
• Dual Thermal Suppression – 2 independent units in every battery

The BigBattery HUSKY 2 INV 48V ESS Kits are complete lithium power solutions for all types of off-grid residences. Built on our most energy-dense LiFePO₄ platform, they deliver safe, reliable storage with Tier 1 cells, advanced BMS protections, and IP65 durability. With options from compact to large-scale systems, each kit pairs expandable storage with high-performance inverters for dependable backup and off-grid power. Whether you’re seeking energy independence or powering remote locations, HUSKY 2 Kits provide flexible, efficient, and long-lasting energy independence.

• Rugged OutDoor
• Fewer parts
• flexible application
• 10-year us warranty

• Field-Serviceable Modules – Quick maintenance without disassembly
• Trusted – Most number of US installations
• Dual Fire Arrestors – Enhanced outdoor safety protection

The EG4 All Weather Battery packs 14.3kWh of LiFePO₄ storage with 200A output and 8,000+ cycles, delivering unmatched reliability and power in off-grid environments. Engineered for safety with internal self-heating, EMP protection, thermal suppression, and an emergency stop button. Pair it with the 6000XP inverter (6kW, 8kW PV) for mid-sized systems, or the 12000XP inverter (12kW, 24kW PV) for larger setups. Together, the kits deliver complete off-grid power for homes, cabins, and backup needs.

• High capacity storage
• Connected Ownership
• High-Density Energy
• UL Certified Whole-Home

• EG4 Smart BMS – Active cell balancing for improved efficiency and longevity
• Scalable System Architecture - Auto-Addressing Integration with closed-loop
• IP Rated – Supports to withstand dust, water, and temperature extremes

The EG4 WallMount 314Ah All-Weather Battery is a high-capacity 16kWh, 51.2V LiFePO₄ energy storage solution designed for outdoor solar, off-grid, and whole-home backup systems. Featuring a rugged IP67 enclosure, built-in cold-weather heaters, and smart Bluetooth/Wi-Fi monitoring, it delivers dependable performance in demanding environments. When paired with the FLEXBOSS18, it offers a scalable, certified platform for residential and light commercial energy storage.

• High capacity storage
• auto-id plug & play
• built for Longevity
• latest generation bms

• Quite, Compact & Efficient – Natural cooling for silent performance
• Heavy Load Support - 200A output for demanding loads
• Dual-Mount Flexibility – Supports both wall and floor installation

The EG4 WallMount 314Ah Indoor Battery delivers 16kWh of dependable energy storage with 200A continuous output-making it a powerful core component of any home or small-business ESS. Fully compatible with the EG4 FlexBoss18 and FlexBoss21 inverters, it forms a scalable, high-performance energy storage system that provides reliable backup, efficient daily cycling, and smart power management. Its compact indoor design, advanced BMS, self-heating feature, and long 10-year warranty make it a trusted solution for long-term, whole-home energy independence.

• Most Compact
• Live App Monitoring
• Vibration resistant
• 12-Year US Warranty

• Rugged Protection – Durable weather-ready shielding
• Low Voltage Reset Technology – Prevents battery bricking
• Dual Thermal Suppression – 2 independent units in every battery

The BigBattery HUSKY 2 24V ESS Kits deliver reliable, flexible power for all type of off-grid home backup. Built on our LiFePO₄ HUSKY2 platform, they pair Tier 1 cells, advanced BMS protection, and IP65 durability with the Victron MultiPlus-II inverter/charger. These systems support seamless off-grid solar integration, PowerControl and PowerAssist up to 100A, and WiFi-enabled monitoring for easy control. From road trips to off-grid living, HUSKY 2 24V Kits offer safe, scalable, and dependable energy independence.

• Most Compact
• Live App Monitoring
• Vibration resistant
• 12-Year US Warranty

• Rugged Protection – Durable weather-ready shielding
• Low Voltage Reset Technology – Prevents battery bricking
• Dual Thermal Suppression – 2 independent units in every battery

The BigBattery HUSKY 2 12V ESS Kits deliver high-capacity lithium power for all types of off-grid residences. Ranging from 5.12kWh to 20.48kWh, these kits combine Tier 1 LiFePO₄ cells, advanced BMS protection, IP65 enclosures, and cold-weather self-heating. Choose Victron MultiPlus-II inverters with WiFi monitoring or AIMS Power inverters with heavy-duty surge handling. Wherever you go, HUSKY 2 12V Kits provide safe, scalable, and reliable off-grid energy.

• High-Density LiFePO₄
• App Control
• Wireless Touchscreen
• 20+ Year Battery Life

• Trusted for Mission - U.S. Forest Service, off-grid professionals
• Portable Design - Removable battery, wheel for transport & setup
• Advanced Power Electronics - High-Surge Pure Sine Inverter

The Apollo 5K Ultra-Fast Portable Solar Power Station is a premium LiFePO₄ solar generator built for backup power, off-grid living, and mobile energy needs. Featuring a massive 5,376Wh battery, ultra-fast 90-minute solar charging, and industry-leading expandability, Apollo 5K can power essential home appliances for days. Trusted by homeowners, off-grid professionals, and the U.S. Forest Service, it delivers clean, reliable energy designed to last 20+ years.