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BigBattery

BigBattery APEX-6.5K Off-Grid Inverter | 6.5kW 120/240V Hybrid

SKU INV034
$1,490.00
$1,490.00
🔥 — sold in the last —
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Estimated shipping time

You can typically expect your items to arrive within 4–7 business days, depending on your location and product availability.

What is your Return Policy?

At Northgrid Supply, we want every customer to shop with confidence. If something doesn’t go as planned, we’ve made returns and refunds simple and fair. Here’s how it works:

1. Return Window

You can request a return within 30 days of receiving your order. Unfortunately, we’re unable to accept returns after that time frame.

2. Who Pays for Return Shipping?

  • If your item arrives damaged, defective, or incorrect, we’ll cover the return shipping cost.
  • If you’re returning an item because you changed your mind, you’ll be responsible for return shipping fees.

3. Damaged or Defective Items

Received something broken or not working properly? Contact us within 30 days. We’ll provide a prepaid return label and once the item is returned and inspected, we’ll issue either a full refund or a replacement—including any original shipping costs.

4. Changed Your Mind?

If you no longer want the item, you can return it within 30 days—as long as it's unused, in its original packaging, and in resellable condition. You’ll need to handle the return shipping, and once we receive and inspect it, we’ll refund the product cost (excluding shipping).

5. Refund Processing

Once we receive and approve your return, we’ll send a confirmation email and issue a refund to your original payment method within 7 business days. Please allow additional time for banks or credit card companies to process and reflect the refund.

If it’s been over 10 business days since your refund was approved and you still don’t see it, contact us at support@northgridsupply.com and we’ll look into it immediately.

6. Restocking Fees

In some cases, a restocking fee may apply depending on the item and return reason. If applicable, we’ll clearly communicate this during your return request process.

APEX-6.5K Off-Grid Inverter

The APEX-6.5K Off-Grid Inverter is a rugged hybrid inverter built for reliable off-grid and backup power applications. With 6,500W rated output power, split-phase 120/240V output, and pure sine-wave performance, it provides clean, stable energy for homes, cabins, homesteads, remote residences, and off-grid properties. Designed to work with modern LiFePO4 battery systems, it supports solar and generator input setups to help keep essential loads powered day and night.

Product Highlights

  • Residential Power: 6,500W rated output power for residential, backup, and off-grid energy systems.

  • Surge Capacity: 13,000VA max output power for handling demanding loads.

  • Appliance Compatibility: Split-phase 120/240V output for standard and heavy-duty appliances.

  • Clean Energy: Pure sine-wave output for clean, stable power.

  • Hybrid Inputs: Solar + generator input support for flexible energy sources.

  • Heavy Duty Circuitry: 80A pass-through capability for large appliances and critical circuits.

  • System Integration: 48V battery system compatibility for off-grid and hybrid installations.

  • Scalable Output: Supports up to 6 units in parallel for larger system configurations.

  • Rapid Transfer: 10ms typical switching time for fast backup power transfer.

  • Trusted Support: 5-year limited warranty with lifetime USA-based tech support.

Key Features

  • Reliable Off-Grid Power: Delivers 6,500W rated output power with clean pure sine-wave performance for homesteads and remote residences.

  • Whole-Home Split-Phase Output: Provides 120/240V output, allowing it to power both everyday household loads and larger appliances with confidence.

  • Solar-Ready Setup: Supports solar input with 1 + 1 MPPTs and up to 5,000W + 5,000W max input power.

  • Generator Input Support: Designed to work with generator input for charging when solar production is low.

  • Strong Charging Capability: Supports up to 140A max solar charging current and 80A max grid/generator charging current.

  • Fast Power Transfer: Features a 10ms typical switching time to provide quick transition support during backup use.

  • Installer-Friendly Design: Built with bottom-entry wiring to help simplify installation and keep the setup organized.

  • Built-In Protection Systems: Includes PV over-voltage, battery protection, short-circuit, over-temperature, and overload protection.

  • Parallel Expansion Capability: Supports up to 6 parallel units; 3 or more units can form a three-phase output.

  • Communication & Monitoring: Includes RS485, CAN, USB, and dry contact support with optional Wi-Fi/GPRS modules.

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    Total price$9,799.97