Mastervolt CombiMaster 24V - 3000W - 70 Amp (120V)
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Estimated Delivery:Aug 30 - Sep 03
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Free Shipping: On all orders over $150
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Mastervolt CombiMaster 24V - 3000W - 70 Amp (120V)
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Mastervolt CombiMaster 24V - 3000W - 70 Amp (120V)
Mastervolt CombiMaster 24V - 3000W - 70 Amp (120V) delivers uninterrupted power supply tailored for heavy-duty applications. Designed for both automotive and RV use, this powerful inverter/charger drives even the most sensitive loads effortlessly, ensuring reliability wherever you go.
Featuring:
- 3000W Power Output: Provides a robust and reliable power supply, perfect for high-demand devices.
- 70 Amp Charger: Efficiently charges batteries, reducing downtime and ensuring optimal performance.
- User-Friendly Design: Intuitive interface for easy operation, making it suitable for all skill levels.
Perfect for avid travelers, campers, or anyone needing a dependable power solution in their automotive or RV setups, the Mastervolt CombiMaster is backed by Mastervolt's reputation for quality and reliability.
Invest in the Mastervolt CombiMaster today for peace of mind during your adventures and enjoy a 2-year warranty for added confidence in your purchase!


Mastervolt CombiMaster 24V - 3000W - 70 Amp (120V)
Mastervolt CombiMaster 24V - 3000W - 70 Amp (120V) offers uninterrupted power supply tailored for heavy-duty applications. Designed with user-friendliness in mind, this powerful inverter/charger drives even the most sensitive loads effortlessly.
Key Features:
- Compact & Lightweight: The most compact and lightweight combi in its class, perfect for limited spaces.
- Intelligent Battery Charger: Features an intelligent 3-step+ battery charger for faster, safer charging.
- Automatic Switching: Automatic AC transfer system seamlessly switches between mains and inverter mode.
Ideal for marine and RV enthusiasts, this product is supported by Mastervolt’s exceptional quality guarantee, ensuring reliability and satisfaction. Experience peace of mind with the CombiMaster, where power dips and failures belong to the past.

CombiMaster 24V - 3000W - 70 Amp (120V)
Designed with the customer in mind and using the latest technology, the CombiMaster range is all about user-friendliness and reliability. But don’t let that friendly appearance misguide you: the powerful CombiMaster range drives even the heaviest and most sensitive loads with ease!
With the CombiMaster, power dips and failures belong to the past. The automatic AC transfer system switches between generator or mains and inverter output, ensuring a constant power supply. Its Power Assist function prevents tripping of the mains fuse in case you’re connected to a weak land line or small generator.
The CombiMaster range delivers unmatched performance and value for money. As you would expect from Mastervolt, the CombiMaster is completed with MasterBus, CZone and NMEA 2000 compatible communication, allowing for a broad range of monitoring and system integration options.
Features:
- Most compact and lightweight Combi in its class.
- Reliable, hum-free and longer operation from your batteries.
- Starts even the heaviest and most sensitive loads.
- Intelligent 3-step+ battery charger for faster and safer charging.
- Automatic switching between mains and inverter mode.
- Power Assist prevents blown mains fuses.
- Generator compatible.
- Integrated CZone*, MasterBus and NMEA 2000 communication.
- Quick installation with heavy duty connections.
- E-mark certified.
Remote Control & Monitoring Options:
- MasterBus compatible via SmartRemote or EasyView 5 display.
- CZone* / NMEA 2000 compatible via Touch 5 or Touch 10 display.
- NMEA 2000 compatible via 3rd party multifunctional display.
WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
Shipping Policy
Thank you for choosing Outdoors.Supply. We aim to deliver your gear efficiently and reliably.
Carriers
We ship all orders via UPS Ground or FedEx Ground, depending on availability and destination.
Shipping Rates
- Orders under $150: Flat shipping rate of $15
- Orders $150 and above: Free shipping
Note: A handling fee of $7.50 may apply to certain items. If applicable, it will be clearly stated during checkout.
Order Processing
- Orders placed before 12:00 PM ET (Monday–Friday): Processed the same business day
- Orders placed after 12:00 PM ET or on weekends/holidays: Processed the next business day
Delivery Time
All orders are delivered within 3–7 business days from the date of shipment, depending on your location.
For any questions or concerns about your order, please contact us at [hello@outdoors.supply]. We’re here to help!
Discover more in our FAQ
How long does it take to process an order?
All orders are processed the same business day if placed before 12 PM EST. Orders placed after 12 PM EST are processed the following business day.
Do you ship internationally?
No! Currently we are only supporting shipments to contiguous United States. We do not ship to PO Boxes or Internationally.
What is your return policy?
No Returns
Due to the nature of our products and our commitment to ensuring the highest quality standards, we do not accept any returns under any circumstances.
No Refunds
We do not offer refunds for any reason, including but not limited to:
- Change of mind
- Incorrect size or style ordered
- Delayed shipping
- Product dissatisfaction
Please refer to our Refund Policy
What are your sizing options?
We have a size chart displayed on most products to reflect the sizing as accurate as possible. Please review the size chart and ensure you are leveraging the closest size possible.
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Why You'll Love Mastervolt CombiMaster 24V - 3000W - 70 Amp (120V)
Premium Quality
Mastervolt is known for exceptional quality and attention to detail in every product.
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Fast and reliable shipping to get your Mastervolt CombiMaster 24V - 3000W - 70 Amp (120V) to you quickly.
Satisfaction Guarantee
Backed by our comprehensive warranty for complete peace of mind.
Expert Support
Our dedicated support team is here to help with any questions about Mastervolt CombiMaster 24V - 3000W - 70 Amp (120V).