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BigBattery APEX 10K Off-Grid Hybrid Inverter

SKU: INV035
Save $419.99 Save $419.99
Original price $2,099.99
Original price $2,099.99 - Original price $2,099.99
Original price $2,099.99
Current price $1,680.00
$1,680.00 - $1,680.00
Current price $1,680.00
Availability:
in stock

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Product Highlights

Meet the APEX 10K off-grid hybrid inverter engineered for true energy independence. Delivering split-phase 120/240 V at 50/60 Hz with clean, pure sine-wave output, APEX pairs flawlessly with modern LiFePO₄ banks and accepts both solar and generator inputs for seamless, all-day autonomy. An 80A pass-through keeps large appliances and critical loads humming, while wide operating temps and an outdoor-ready enclosure mean reliable performance in real-world conditions. Installer-friendly bottom-entry wiring and smart protections round out a system that’s rugged, efficient, and ready to power your cabin, homestead, or remote residences to deliver the ultimate source of energy independence.

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BigBattery APEX 10K Off-Grid Hybrid Inverter

BigBattery APEX 10K Off-Grid Hybrid Inverter

Introducing The APEX Inverter Series

Meet the BigBattery APEX Off-Grid Hybrid Inverter Series (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.

APEX-10K INVERTER INPUTS

Specifications:

BigBattery APEX 10K Off-Grid Hybrid Inverter
Model APEX-10kW
Inverter Output
Rated Output Power 10,000W
Surge Capacity (Peak Power) 20,000W
Rated Output Voltage 120/240 Vac (single-phase/split-phase)
Load Capacity of Motors 6 HP
Rated Frequency 50 / 60Hz
Output Wave Pure sine wave
Switching Time 10ms (typical value)
Battery
Battery Type Lithium-ion battery / Lead-acid battery
/ User-defined battery
Rated Battery Voltage 48V
Voltage Range 40–60Vdc
Max. Solar Charging Current 200A
Max. Grid / Generator Charging Current 120A
Max. Hybrid Charge Current 200A
Solar Input
No. of MPPT 1 + 1
Max. Input Power 5,500W + 5,500W
Max. Input Current 22A + 22A
Max. Open Circuit Voltage 550Vdc + 550Vdc
MPPT Voltage Range 125–450Vdc
Grid / Generator Input
Input Voltage Range 65–140Vac
Input Frequency Range 50 / 60Hz
Bypass Overload Current 63A
AC Inputs 1 Input – Grid or Generator
THD (V) <5%
Efficiency
Max. Efficiency 99.9%
MPPT Tracking Efficiency 92%
Parallel Capacity Up to 6 units (More than 3 units in
parallel can form a three-phase output)
General Data
Dimension 28.46 in × 17.64 in × 5.91 in
Weight 62 lbs
Protection Degree IP20 (Indoor Only)
Temperature 14 – 131°F, >113°F Derate
External Module (Optional) Wi-Fi / GPRS
Certificate UL1741 / RoHS / EN61000-6-1 / EN61000-6-3 /
FCC Part 15 Class B / IEC62109-1 / IEC62109-2
Noise <60dB
Cooling Method Intelligent fan
Communication RS485 / CAN / USB / Dry Contact
Integrated Circuit Breaker Utility / Load / Battery / PV
Overload Protection
Overload Protection Behavior After overload protection is enabled, the inverter output
will be restored after 3 minutes, and after 5 times of overload,
the output will be off until the inverter is restarted.
(102% < APEX-10K load < 110%): an error will be reported
and the output will be turned off after 5 minutes.
(110% < load < 125%): an error will be reported and the output
will be turned off after 10 seconds. Load > 125%: an error will
be reported and the output will be turned off after 5 seconds.
Protection Features Has PV input current limiting protection, PV input over-voltage
protection, PV night reverse current protection, AC input
over-voltage protection, AC input under-voltage protection,
battery over-voltage protection, battery under-voltage protection,
battery over-current protection, AC output short-circuit
protection, heat sink over-temperature protection, inverter
over-load protection.

Frequently Asked Questions

Can the inverter work on-grid and off-grid?

Yes. The APEX is a true hybrid inverter. It syncs with the utility for grid use and runs independently from solar + batteries during outages, switching automatically for uninterrupted power.

What batteries are compatible with the APEX inverter?

The Apex series inverters support most lithium batteries and are designed to work best with BigBattery batteries such as NEXUS, ETHOS, and HUSKY 2. RS485 and CAN enable smart integration; without communication, they operate in voltagecontrolled mode. Tip: use a CAN-enabled BigBattery pack for optimal protection and performance reporting.

How much solar input can the APEX inverter handle?

The APEX inverter supports a wide PV input range of up to 600 VDC, with dual independent MPPT trackers to optimize energy harvest from multiple solar strings. This design allows flexible array configurations, ideal for installations with varying roof angles or mixed sunlight exposure. The high input voltage and dual MPPT architecture ensure maximum solar utilization and stable operation under changing conditions.

Product Documents:

BigBattery APEX 10K Off-Grid Hybrid Inverter Specification Sheet

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BigBattery APEX 10K Off-Grid Hybrid Inverter User Manual

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