Inverters

BigBattery APEX 10K Hybrid Off-Grid Inverter | 10,000W 120/240V Split-Phase | Dual MPPT 11kW PV | 48V | UL1741 | 5-Year Warranty

$ 1,990USD · price may vary

BrandBigBattery

Model: INV035
Specifications: 0

Size your system More from BigBattery

Overview

Meet the BigBattery APEX 10K—a high-output hybrid off-grid inverter built for reliable 120/240V split-phase power with clean pure sine wave performance. Designed to pair smoothly with 48V lithium (LiFePO₄) or lead-acid battery banks, the APEX 10K combines inverter + solar charger + battery charger in one DIY-friendly powerhouse—so you can build an energy-independent system with fewer components and cleaner wiring.

Key Features & Benefits:

10,000W rated / 20,000VA max output for demanding whole-home loads and 240V appliances

120/240V split-phase, 50/60Hz pure sine wave for stable, utility-quality power

Dual MPPT solar charging (1+1) with up to 11,000W PV input and 125–450VDC MPPT range for flexible array design

Up to 200A max solar charging and up to 120A grid/generator charging to keep batteries topped off fast

Single AC input (Grid or Generator) for simple integration (not simultaneously)

Parallel up to 6 units (3+ can form three-phase output) for scalable system expansion

Built-in protections + integrated breakers (PV/utility/load/battery) for safer installs and smarter operation

Connectivity & monitoring-ready: Wi-Fi/GPRS optional, plus RS485/CAN/USB/Dry Contact

Indoor-rated (IP20) with intelligent fan cooling and <60dB noise

Certified & compliant: UL1741, FCC Part 15 Class B, IEC62109-1/-2, RoHS, EN61000 standards

5-year warranty for long-term confidence

Specs at a Glance:

Battery Voltage: 48V (40–60VDC range)

Bypass/Overload Current: 63A

Dimensions / Weight: 28.46 × 17.64 × 5.91 in / 62 lbs

Operating Temp: 14–131°F (derate above 113°F)

User Manual / Documents:

BigBattery APEX 10K Hybrid Off-Grid Inverter Spec Sheet

BigBattery APEX 10K Hybrid Off-Grid Inverter User Manual

How to read this datasheet

Detailed specifications for BigBattery APEX 10K Hybrid Off-Grid Inverter | 10,000W 120/240V Split-Phase | Dual MPPT 11kW PV | 48V | UL1741 | 5-Year Warranty have not been published yet. BigBattery lists this inverter in the Inverters, and we add fields as the manufacturer releases them — in the meantime, ask your distributor for the datasheet before ordering.

For an inverter, the figures that matter most are maximum PV input and the number of MPPT trackers, which set how many panel strings you can connect, the MPPT voltage window, which decides how many panels go in a string, peak and weighted (European/CEC) efficiency, typically 96–98.5% and topology — on-grid, off-grid, hybrid or micro. It is the component that decides what a solar system can do: how much power you can draw at once, whether you can export to the grid, whether the system keeps running in a blackout, and how well the panels and battery are managed day to day.

Before you buy an inverter

The checks below apply to any inverter. Run them against the specification table above — most disappointing solar purchases are compatible-on-paper units that fail one of these in practice.

Size the inverter against the loads you need to run simultaneously, not against the total wattage of every appliance in the building — a 5 kW inverter comfortably runs a fridge, fans, lights and a couple of ACs, but not all of them plus a water pump starting at the same time.
Keep the panel array between roughly 1.0 and 1.3 times the inverter's rating. Slight oversizing (a higher DC-to-AC ratio) captures more energy on cloudy mornings and winter days; going far beyond it wastes generation through clipping.
Check the surge rating if you run motors — deep-well pumps, compressors and older air conditioners can draw two to three times their running current for a few seconds at start-up.
Choose a hybrid inverter if a battery is in your plan now or later; retrofitting storage onto a pure grid-tie inverter usually means buying a second unit or an AC-coupled battery system.

What people get wrong

Assuming any grid-tie inverter keeps the lights on during an outage. Standard on-grid units shut down for safety unless they have a dedicated backup or islanding output.
Overlooking the IP rating. An outdoor installation needs at least IP65; indoor-rated units mounted outside fail early.
Buying on peak-watt price alone. A cheap inverter with a narrow MPPT window forces awkward string layouts and can strand a portion of the array.

Price and availability in United States

BigBattery APEX 10K Hybrid Off-Grid Inverter | 10,000W 120/240V Split-Phase | Dual MPPT 11kW PV | 48V | UL1741 | 5-Year Warranty is listed at $ 1,990 (USD) for United States. Solar pricing moves with supply, import duties and exchange rates, and distributors set their own margins, so treat this as a comparison reference and confirm the current figure before you order.

SolarBazaar compares equipment rather than selling it. Shortlist here on specification and price, then buy from an authorised distributor or installer in United States: warranty cover on solar hardware is normally honoured through the channel you bought from, so confirm who supports BigBattery locally before ordering.

BigBattery APEX 10K Hybrid Off-Grid Inverter | 10,000W 120/240V Split-Phase | Dual MPPT 11kW PV | 48V | UL1741 | 5-Year Warranty — frequently asked questions

BigBattery APEX 10K Hybrid Off-Grid Inverter | 10,000W 120/240V Split-Phase | Dual MPPT 11kW PV | 48V | UL1741 | 5-Year Warranty is listed at $ 1,990 (USD) for United States. The figure is indicative — solar prices move with supply, duties and exchange rates, and each distributor sets its own margin — so confirm the current price with a supplier before ordering.

BigBattery APEX 10K Hybrid Off-Grid Inverter | 10,000W 120/240V Split-Phase | Dual MPPT 11kW PV | 48V | UL1741 | 5-Year Warranty is a BigBattery product, listed under inverters with model reference INV035. The BigBattery brand page lists the rest of its range so you can compare across the catalogue.

That depends on what it has to connect to. For an inverter, check maximum PV input and the number of MPPT trackers, which set how many panel strings you can connect, the MPPT voltage window, which decides how many panels go in a string and peak and weighted (European/CEC) efficiency, typically 96–98.5% against the rest of your equipment before price enters the decision. Choose a hybrid inverter if a battery is in your plan now or later; retrofitting storage onto a pure grid-tie inverter usually means buying a second unit or an AC-coupled battery system.

SolarBazaar lists and compares equipment rather than selling it. Use the specifications and price here to shortlist, then buy through an authorised distributor or installer in United States — buying in-channel is what keeps the manufacturer's warranty valid.

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