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For Your Every Summer RSVP, with Code: SUMMER15
Description
Mastervolt Mass Combi Ultra Inverter/Charger (12V / 3000W / 150A)The Mastervolt Mass Combi Ultra combines a 3 step battery charger, a true sine wave power inverter as well as a solar charge regulator. The unit has two AC inputs and can be connected up to shore power, generators or solar panels for charging and the AC output will automatically switch between mains and inverter mode. It has two separate AC outputs, allowing critical equipment to be put on a different circuit to other appliances to protect them from
The Mastervolt Mass Combi Ultra combines a 3 step battery charger, a true sine wave power inverter as well as a solar charge regulator. The unit has two AC inputs and can be connected up to shore power, generators or solar panels for charging and the AC output will automatically switch between mains and inverter mode. It has two separate AC outputs, allowing critical equipment to be put on a different circuit to other appliances to protect them from heavy loads. The inverter/charger is built to be reliable and user friendly, and is equipped with MasterBus Combi integration for easy operation along with the rest of your Mastervolt system. The Mass Combi Ultra features the Power Assist function, which prevents main fuses or breakers being tripped in the event of a weak power supply. It also eliminates power failures and dips to maintain reliable performance. The unit is equally capable at handling heavy loads and more sensitive loads, and with a true sine wave output will not cause harm or damage to your appliances. The high frequency technology used eliminates noise typically associated with power inverters, such as buzzing or humming. This unit can provide up to 50% of charging current or inverter capacity without using any fan cooling, and so runs very quietly. Even when operating at maximum capacity, or performing in high ambient temperatures, the fan speed is regulated to only run in a linear way, meaning it wont spin too fast or make unnecessary noises. The solar regulator will prioritise solar energy over other sources of AC, ensuring you get the most cost effective and efficient method of energy input into the system. The regulator also uses MPPT technology to yield 30% more energy from solar power compared to others on the market using PWM. This model can be used in a 3 phase system, or you can combine up to 10 units in parallel for higher power outputs. Specifications sine wave inverter Nominal DC voltage: 12 V (9.5-16 V) Output voltage: 180-260 V, adjustable Output frequency: 50/60 Hz (� 0.005 %), configurable Output waveform: true sine Continuous power at 40 C / 104 F, cos phi 1: 3000 W Max. peak load: 6000 W Max. efficiency: �� 90 % Max. ripple on DC (battery at full load): < 5 % No-load power consumption on DC (ON/inverter OFF/OFF): 26 W / 4 W / 0 W Energy saving mode consumption: 7 W Parallel configuration: yes, up to 10 units (for larger systems, an external transfer system is required) 3-Phase configuration: yes, up to 3x3 Synchronise with mains/generator: yes Specifications battery charger Input voltage range: 184-275 V Max. input current: 12 A Max. charge current at 40 C / 104 F: 150 A at 14.25 V, adjustable Secondary charger output voltage: 12 V Secondary charger output current: 10 A Battery temperature sensor: yes, included Battery voltage sense: through MasterShunt, otherwise automatic compensation Specifications transfer system AC input (generator): 50 A (switched) AC input: 30 A (switched) AC output 1: 67 A AC output 2: 50 A (switched) AC input fuse: no Transfer speed: seamless (< 1 ms) Transfer voltage range: 184-275 V, adjustable Transfer frequency range: 35-68 Hz, adjustable Specifications solar input (DC) Input voltage range: 15-100 V Max. PV peak power: 375 Wp Max. input current: 19 A Max. charge current: 25 A at 14.25V MPP Tracker: full power at 15-80 V General specifications Galvanisedanic isolation: yes Display/read-out: LED display Dimensions, hxwxd: 472 x 318 x 178mm (18.6 x 12.5 x 7.0 inch) Weight: 15.3 kg (33.7 lb) Compliance: CE, E-mark, ABYC, RMRS Technical specifications Charge characteristic: IUoUo, automatic / 3-step+ for Gel/AGM/MLI/ flooded/spiral/traction Recommended battery capacity: ~ 300-900 Ah (based on gel batteries, may differ for other types) Ground relay: yes, configurable Temperature range (ambient temp.): -25 C to 60 C, derating > 40 C (-13 F to 140 F) Cooling: vario fan Protection degree: IP23 (vertical mounting) Safety class: IEC protection class I Humidity protection: conformal coating, max. 95 % relative humidity, non condensing Protections: over temperature, overload, short circuit, high/low battery voltage Power Assist: yes MasterBus compatible: yesShipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
Delightful Addition to My Bathroom!
Size: 3' (Round), Color: Light Blue, Size: 3' (Round), Color: Light Blue
I absolutely love this bath rug! The color is beautiful, and it is incredibly soft underfoot. What truly sets it apart for me is the round shape—it is such a refreshing and stylish change from the standard square or rectangular mats.
I actually love the look and feel of it so much that I purchased a second one and placed them side by side. It creates a wonderful, unique aesthetic in the room. Highly recommended!
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Reviewed in the United States on May 26, 2026
★★★★★ 5
So soft and pretty!
Size: 2' x 6' (Sheepskin), Color: White
Really happy with this rug! It’s super soft and looks amazing in my space. The color is perfect and goes with everything. Great quality for the price. Definitely recommend!
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Excellent Rug & Unbeatable Customer Service!
Size: 6 x 8 ft Rectangle, Color: White
I absolutely love this rug! It has completely transformed my living room—it looks surprisingly glam and feels wonderfully soft underfoot.
The feature that really sold me was that it's fully washable. I was nervous about cleaning it, but the process was surprisingly easy. I strongly recommend skipping the dryer and letting it air dry. I simply hung mine over my shower door, and it was completely dry overnight. I used a brush to gently separate the fibers, leaving it looking just as vibrant and feeling just as soft as it did when new.
Additionally, I had an interaction with their customer support team, and they were fantastic. They responded to my inquiry quickly, were respectful, and resolved my issue completely and professionally.
I highly recommend this product for anyone looking for a beautiful, practical, and soft rug with stellar customer service backing it up. Five stars!
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Reviewed in the United States on October 25, 2025
★★★★★ 4
Soft but no cushion
Size: 2' x 8' (Runner), Color: White
This rug is nice and soft but too thin for me.
It’s very beautiful, it’s soft and fluffy but not enough cushion for my taste
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Reviewed in the United States on January 28, 2026
★★★★★ 5
SOFT, SILKY,Like Butter
Size: 3' (Round), Color: Light Yellow
This rug is the perfect size for the side of my bed. It is so soft, and the lightest, prettiest yellow.
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Reviewed in the United States on April 27, 2026