• APEX-6.5K Off-Grid Hybrid Inverter
  • APEX-6.5K Off-Grid Hybrid Inverter
  • APEX-6.5K Off-Grid Hybrid Inverter
  • APEX-6.5K Off-Grid Hybrid Inverter
  • APEX-6.5K Off-Grid Hybrid Inverter
  • APEX-6.5K Off-Grid Hybrid Inverter
APEX-6.5K Off-Grid Hybrid Inverter
APEX-6.5K Off-Grid Hybrid Inverter
APEX-6.5K Off-Grid Hybrid Inverter
APEX-6.5K Off-Grid Hybrid Inverter
APEX-6.5K Off-Grid Hybrid Inverter
APEX-6.5K Off-Grid Hybrid Inverter
BigBattery | SKU: INV034

BigBattery | APEX-6.5K Off-Grid Hybrid Inverter | 6.5kW 120/240V Split-Phase | 10kW PV | 48V | INV034

$1,250.00
$1,250.00
FREE SHIPPING i Free shipping to the contiguous United States on every order. The price you see is the price you pay — no extra shipping or freight fees added at checkout.
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APEX-6.5K Off-Grid Hybrid Inverter APEX-6.5K Off-Grid Hybrid Inverter APEX-6.5K Off-Grid Hybrid Inverter APEX-6.5K Off-Grid Hybrid Inverter APEX-6.5K Off-Grid Hybrid Inverter APEX-6.5K Off-Grid Hybrid Inverter
APEX-6.5K Off-Grid Hybrid Inverter APEX-6.5K Off-Grid Hybrid Inverter APEX-6.5K Off-Grid Hybrid Inverter APEX-6.5K Off-Grid Hybrid Inverter APEX-6.5K Off-Grid Hybrid Inverter APEX-6.5K Off-Grid Hybrid Inverter
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Product Description

The BigBattery APEX-6.5K is a rugged off-grid hybrid inverter that delivers 6,500W of clean, split-phase 120/240V pure sine-wave power for homes, cabins, homesteads and remote properties. It pairs seamlessly with 48V LiFePO4 battery banks for stable, efficient, all-day operation.

Dual MPPT solar inputs accept up to 10kW of PV, and separate grid and generator inputs keep batteries charging when the sun goes down. An 80A pass-through supports large appliances and critical loads, while bottom-entry wiring and integrated breakers make for a clean, installer-friendly build.

Key Features

  • 6.5kW continuous / 13kVA peak split-phase 120/240V output
  • Up to 10kW PV input across 2 MPPTs (550V DC max)
  • Separate grid AND generator AC inputs
  • 80A pass-through for large appliances and critical loads
  • Up to 140A battery charging
  • Parallel up to 6 units, including three-phase configurations
  • Installer-friendly bottom-entry wiring with integrated breakers

Compatibility

  • Closed-loop communication with BigBattery NEXUS, ETHOS and 48V HUSKY 2 INV batteries
  • EG4 WallMount 280Ah and 314Ah batteries (All-Weather and Indoor)
  • Off-grid, non-UL 9540 installations

Specifications

Rated Output Power 6,500W
Max Output Power 13,000VA
Motor Load Capacity 4 HP
Rated Output Voltage 120/240V AC split-phase (single-phase capable)
Output Waveform Pure sine wave
Frequency 50/60Hz
Transfer Time 10 ms (typical)
Battery 48V nominal (40–60V DC); lithium-ion, lead-acid or user-defined
Max Solar Charge Current 140A
Max Grid/Generator Charge Current 80A
Max PV Input Power 5,000W + 5,000W
Max PV Input Current 18A + 18A
MPPT Trackers 2 (1 + 1)
Max PV Open Circuit Voltage 550V DC per MPPT
MPPT Voltage Range 125 – 450V DC
AC Input Voltage Range 65 – 140V AC
AC Inputs 2 (grid and generator)
Bypass Overload Current 40A
MPPT Tracking Efficiency 93%
Max Efficiency 99.9%
Parallel Capability Up to 6 units (3+ units can form three-phase output)
Protection Degree IP20 (indoor only)
Operating Temperature 14 – 131°F (derates above 113°F)
Communications RS485 / CAN / USB / dry contact; optional Wi-Fi / GPRS
Integrated Breakers Utility / Load / Battery / PV
Certifications UL1741, IEC62109-1/-2, FCC Part 15 Class B, RoHS
Noise < 60 dB
Dimensions 25.51 × 16.14 × 5.51 in
Weight 48 lb
UPC 00199874185712

Warranty & Support

5-year BigBattery warranty with lifetime USA-based technical support. Ships from Texas, USA.

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