EG4
$1,499.99
$250 / kW
Sale · Up to 10% Off
Up to 10% Off Select Inverters
Take up to 10% off select off-grid and hybrid inverters, from the 6000XP to the FlexBOSS21. The discount is applied automatically when the inverter is in your cart. No code needed.
- 180,000+ Products Installed
- 2.4+ TWh Energy Delivered
- Up to 10% Off Applied in Cart
- UL-9540 & CEC Certified
All inverters sale
7 of 7 products
EG4
$2,589.29
$1,899.99
$158 / kW
EG4
$2,999.99
$375 / kW
BigBattery
$1,680.00
$1,550.00
$155 / kW
EG4
$3,499.99
$3,199.99
$246 / kW
EG4
$5,763.00
$3,999.99
$333 / kW
EG4
$4,199.99
$3,599.99
$225 / kW
Nothing matches those filters.
EG4 add-ons
The EG4 parts most inverter installs need alongside the unit.
Indoor Conduit Box
Buildable box for a tidy, code-friendly install
$92.99
Add
Parallel Cable Kit
Wire two units together
$164.99
Add
GridBOSS Breaker Kit
Breakers for a GridBOSS microgrid build
$249.99
Add
GridBOSS 200A MID
Microgrid controller for multi-inverter and generator builds
$1,799.99
Add
Common questions about the EG4 inverter sale
How do I get up to 10% off?
Add the inverter to your cart. The discount comes off automatically there and at checkout, with no code to enter, and each inverter’s card shows how much it takes off. The price on this page and on the product page is the regular price before the discount.
Can I use a coupon code as well?
No. Applying a coupon code switches the automatic discount off for that cart, so you get one or the other, never both. If you have a code worth more than the discount on your inverter, use the code; otherwise leave it off.
Are these genuine EG4 products with the EG4 warranty?
Yes. BigBattery is an authorized EG4 dealer, so every unit is new, ships from our Texas warehouse and carries the full EG4 manufacturer warranty.
Do EG4 batteries and inverters work together?
Yes. The EG4 WallMount batteries run closed-loop with every EG4 off-grid and hybrid inverter we sell, so the inverter reads the battery state of charge directly. They also run closed-loop with BigBattery APEX inverters and ETHOS and NEXUS batteries if you mix brands.
Want your EG4 design checked first?
Send us your loads and array size. A Texas-based technician will confirm the inverter and battery match before you spend anything.
Or call (818) 280-3091 · Mon–Fri 8am–5pm CT
