Check the listed compatible models and specs before you order. Questions? Email us.
OLTEANP
OLTEANP 3500W Pure Sine Wave Inverter with Transfer Switch – 12V to 120V, 7000W Peak, RV & Off-Grid
Free U.S. shipping and free 30-day returns. Check the compatible models in the description below.
$357.24
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Free 30-day returns
Free tracked shipping and secure checkout on every U.S. order.
Free shipping
iFree tracked shipping on every order. Most orders arrive within 3–8 business days.
Free 30-day returns
iReturn eligible items within 30 days of delivery for a full refund. We email you a prepaid return label.
Peak-demand shipping delays
iDuring high demand, deliveries may experience short carrier delays. Tracking updates remain active for every order.
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Questions about fit or an order? Email nexoltic@gmail.com. We reply on business days (Mon–Fri).
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Free returns within 30 days of delivery: full refund with a prepaid return label.
Every U.S. order ships free. Eligible items can be returned within 30 days of delivery for a full refund, with a free prepaid return label.
Product details
Power you can rely on, wherever you go
The OLTEANP 3500W Pure Sine Wave Inverter with a built in transfer switch is designed for life on the move. It converts 12V DC from a battery into clean 120V AC power, making it a practical companion for RVs, trucks, and off grid cabins. Its rugged build and intelligent design aim to keep your essential devices running smoothly in environments where stable power matters most.
Why this inverter stands out
- 3500W continuous output with up to 7000W peak to handle startup surges and multiple devices.
- Built in auto transfer switch switches between battery power and shore power in roughly 12 milliseconds for seamless operation.
- Pure sine wave output ensures compatibility with sensitive electronics like laptops, TVs, and other daily tools.
- Remote LCD monitoring provides clear voltage and system status at a glance from a distance of up to 15 ft.
- 12V DC to 120V AC conversion without energy storage; battery not included, designed as a high capacity power converter.
- Comprehensive protections safeguard against overload, overheating, short circuit, over voltage, and low voltage.
- Includes essential accessories and is supported by professional help when you need it.
Smart, practical use cases
Whether you are cruising in an RV, working off grid, or operating a fleet vehicle, this inverter is built to support everyday needs without overcomplicating the setup. Its clean power and quick switching make it a flexible choice for dynamic environments.
- RV living: power a fridge, microwave, coffee maker, and entertainment devices with confidence.
- Off grid cabin: run common tools and devices without relying on a single battery configuration.
- Truck/overland use: maintain a stable AC supply while charging and operating multiple devices on the road.
What you get and important notes
- 1 × 3500W 12V power inverter
- Battery cables and user manual
- 12-month professional support with 24/7 customer service
Important: this unit does not store energy or charge a battery. It functions as a high capacity power converter that requires an external battery and appropriate safety practices for mobile and emergency power setups.
FAQ
Q: What can I power with OLTEANP 3500W inverter?
A: Supports refrigerators, microwaves, laptops, TVs, and other devices when connected to a suitable 12V battery system.
Q: How fast does the auto transfer switch respond?
A: The built-in switch transfers from battery to shore power in about 12 milliseconds, keeping the AC output uninterrupted.
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