Product Summary:
The BigBattery APEX 10K Hybrid Inverter is a powerful, off-grid-ready solution engineered for true energy independence. Delivering split-phase 120/240V pure sine-wave output at 50/60Hz, it efficiently powers homes, cabins, and remote systems with clean, stable energy.
Designed to work seamlessly with modern LiFePO₄ battery systems, the APEX 10K supports both solar and generator inputs for continuous, all-day operation. With an 80A pass-through for large appliances and critical loads, it ensures dependable performance when it matters most.
Built for real-world conditions, the APEX features a rugged, durable design, wide operating temperature range, and installer-friendly configuration—making it a reliable, efficient choice for off-grid and backup power applications.
Ships From: Texas, USA
Warranty: 5 Years
Support: Lifetime USA-Based Tech Support
Compatibility
Closed-Loop Communication with Batteries (Off-Grid Non-UL 9540 Installs):
- BigBattery NEXUS, ETHOS, HUSKY2 INV
- EG4 280Ah All Weather, 280Ah Indoor, 314Ah All Weather, 314Ah Indoor
Power Compatibility:
- Works with 48V battery systems
- Supports off-grid and hybrid installations
- Compatible with solar + generator input setups
Key Features
- 10kW Output Power – High-capacity energy for residential and off-grid applications
- Split-Phase 120/240V Output – Powers both standard and heavy-duty appliances
- Pure Sine Wave Output – Clean, stable electricity for sensitive electronics
- Solar + Generator Input – Flexible energy sources for continuous operation
- 80A Pass-Through Capability – Supports high-demand loads and appliances
- Indoor Installation Ready – Designed for installation in garages, utility rooms, and protected environments
- Wide Temperature Range – Reliable performance in varying climates
- Installer-Friendly Design – Bottom-entry wiring for simplified installation
- Smart Protection Systems – Built-in safeguards for safe, stable operation
A powerful, off-grid-ready inverter built for flexibility, reliability, and long-term energy independence.
APEX 10K Off-Grid Inverter
Choose Your Inverter Option*
Choose Your Battery Option*
Choose Your Inverter Quantity*
Standard
Large
3 Phase
Items Included
-
Introducing The APEX Inverter Series
Meet the BigBattery APEX Off-Grid Hybrid Inverter Series (6.5K & 10K)—engineered for true energy independence with two power-class options to match your build. Both models deliver split-phase 120/240V at 50/60 Hz with clean, pure sine-wave output, pairing seamlessly with modern LiFePO₄ battery banks for stable, efficient performance. Designed for real-world autonomy, APEX supports solar and generator inputs so you can stay powered day and night, season after season.
Built to handle demanding loads, the APEX Series features an 80A pass-through to keep large appliances and critical circuits running smoothly, while wide operating temperatures and an outdoor-ready enclosure provide dependable performance in harsh conditions. With installer-friendly bottom-entry wiring and intelligent protections baked in, APEX is a rugged, efficient, and practical backbone for cabins, homesteads, remote residences, and off-grid properties—delivering a streamlined path to reliable, all-day power.
Whole-Home Split-Phase Power
Delivers clean, pure sine-wave electricity to run larger appliances and essential circuits with confidence. Ideal for cabins, homesteads, and off-grid homes that need true 120/240V performance.
Solar Ready Set-Up
Designed to accept both solar and generator inputs on APEX-6.5K so you can stay powered day and night. When sunlight dips, your generator can seamlessly keep the system charging and your loads running.
Off-Grid Reliability
Installer-friendly bottom-entry wiring and built-in protections help keep your setup clean, safe, and dependable for any remote residences. Inputs vary on both inverters, read the specification sheet for more information on inputs between both inverters.
Go Big On Power
The APEX inverter series & NEXUS battery kit paired together is the ultimate solar set up for all off-grid enthusiasts, whether its a cozy log cabin, modest tiny home or a vast ranch, this ESS was designed to ensure your energy independence, protect yourself from outages & blackouts and stay powered.
| INVERTER INPUTS | APEX-6.5K | APEX-10K |
|---|---|---|
| Grid | yes | yes |
| Load | yes | yes |
| Generator | yes | yes* |
| BAT – | yes | yes |
| BAT + | yes | yes |
| PV | yes | yes |
| Parallel Connection | yes | yes |
| USB | yes | yes |
| CT | yes | no |
| WiFi | yes | yes |
| RS485/CAN | yes | yes |
| Dry Contact | yes | yes |
DOWNLOADInverter Specifications
At BigBattery, we stand behind the quality and reliability of our products. Our warranty coverage is designed to give you confidence and peace of mind with every purchase.
- Inverter: Covered by a 5-Year Limited Warranty
For full details on coverage, terms, and conditions, please visit our Policy Page.
Introducing The APEX Inverter Series
Meet the BigBattery APEX Off-Grid Hybrid Inverter Series (6.5K & 10K)—engineered for true energy independence with two power-class options to match your build. Both models deliver split-phase 120/240V at 50/60 Hz with clean, pure sine-wave output, pairing seamlessly with modern LiFePO₄ battery banks for stable, efficient performance. Designed for real-world autonomy, APEX supports solar and generator inputs so you can stay powered day and night, season after season.
Built to handle demanding loads, the APEX Series features an 80A pass-through to keep large appliances and critical circuits running smoothly, while wide operating temperatures and an outdoor-ready enclosure provide dependable performance in harsh conditions. With installer-friendly bottom-entry wiring and intelligent protections baked in, APEX is a rugged, efficient, and practical backbone for cabins, homesteads, remote residences, and off-grid properties—delivering a streamlined path to reliable, all-day power.
Whole-Home Split-Phase Power
Delivers clean, pure sine-wave electricity to run larger appliances and essential circuits with confidence. Ideal for cabins, homesteads, and off-grid homes that need true 120/240V performance.
Solar Ready Set-Up
Designed to accept both solar and generator inputs on APEX-6.5K so you can stay powered day and night. When sunlight dips, your generator can seamlessly keep the system charging and your loads running.
Off-Grid Reliability
Installer-friendly bottom-entry wiring and built-in protections help keep your setup clean, safe, and dependable for any remote residences. Inputs vary on both inverters, read the specification sheet for more information on inputs between both inverters.
Go Big On Power
The APEX inverter series & NEXUS battery kit paired together is the ultimate solar set up for all off-grid enthusiasts, whether its a cozy log cabin, modest tiny home or a vast ranch, this ESS was designed to ensure your energy independence, protect yourself from outages & blackouts and stay powered.
| INVERTER INPUTS | APEX-6.5K | APEX-10K |
|---|---|---|
| Grid | yes | yes |
| Load | yes | yes |
| Generator | yes | yes* |
| BAT – | yes | yes |
| BAT + | yes | yes |
| PV | yes | yes |
| Parallel Connection | yes | yes |
| USB | yes | yes |
| CT | yes | no |
| WiFi | yes | yes |
| RS485/CAN | yes | yes |
| Dry Contact | yes | yes |
Inverter Specifications
At BigBattery, we stand behind the quality and reliability of our products. Our warranty coverage is designed to give you confidence and peace of mind with every purchase.
- Inverter: Covered by a 5-Year Limited Warranty
For full details on coverage, terms, and conditions, please visit our Policy Page.
