SKU: 42355018363

Mastervolt Mass Combi Ultra Inverter/Charger (48V / 3500W / 50A)

Sale price$2403.90 Regular price$2671.00
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Description

Mastervolt Mass Combi Ultra Inverter/Charger (48V / 3500W / 50A)The Mastervolt Mass Combi Ultra combines a 3 step battery charger, able to charge a second 12v or 24v battery simultaneously, along with a heavy duty true sine wave power inverter. The unit has two AC inputs and can be connected up to shore power and generators 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

The Mastervolt Mass Combi Ultra combines a 3 step battery charger, able to charge a second 12v or 24v battery simultaneously, along with a heavy duty true sine wave power inverter. The unit has two AC inputs and can be connected up to shore power and generators 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. 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: 48 V (38-62 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: 3500 W Max. peak load: 7000 W Max. efficiency: �� 93 % 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: 16 A Max. charge current at 40 C / 104 F: 50 A at 57 V, adjustable Secondary charger output voltage: 12/24 V selectable 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 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: ~ 100-300 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: yes
Shipping Notes
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SKU: 42355018363

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4.1 ★★★★★
Based on 16 reviews
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A
Verified Purchase
Aimee C.
Waukegan, US
★★★★★ 4
Perfect size and weight with compact size
Style: Rack with 3 Pairs (3, 5, and 8 Pound)
I purchased the Amazon Basics Neoprene Dumbbell Hand Weights specifically for Pilates, and they’ve been a great addition to my routine. The size and weight are perfect for controlled movements, helping with muscle toning without feeling too bulky or awkward. The neoprene coating gives them a comfortable, non-slip grip, which is especially important during longer sessions or when your hands get a little sweaty. They feel secure and easy to hold through a full workout. I also like the shape—they don’t roll around on the floor, which makes transitions between exercises smoother and less frustrating. They’re compact enough to store easily but still feel durable and well-made. Overall, these are a simple, affordable, and effective option for Pilates or light strength training. I’d definitely recommend them for anyone looking to add a little resistance to their workouts without overcomplicating things.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
J
Verified Purchase
J. saroukhan
Pawtucket, US
★★★★★ 5
Well made , gym quality
Style: 10 Pound, Pair
Color is nice and bright . The weights grips are good they do not slip . Prices reflect quality
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Reviewed in the United States on May 29, 2026
K
Verified Purchase
Kim Wood
Louisville, US
★★★★★ 5
Good purchase
Style: 3 Pound, Pair
These are just the right weight for me to start gaining muscle back in my arms, after a large weight loss. They are of good quality, they are covered in a nice rubber like coating that is soft to the touch. They are small enough that i can take them with me when I travel. My dog has got hold of them a couple times and played with them, and they held up just fine without any damage.
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Reviewed in the United States on April 28, 2026
K
Verified Purchase
Ky Mogg
Natrona Heights, US
★★★★★ 5
Solid, grippy, and they don’t roll away!
Style: 10 Pound, Pair
I bought these because I’m finally trying to build a consistent home workout routine and didn't want to drop a fortune on name-brand weights. I’ve been using this 10lb pair for about a month now for everything from overhead presses to lunges, and honestly, they’re exactly what I was looking for. The Pros: • That Neoprene Grip: The coating is fantastic. Even when my hands get pretty sweaty halfway through a workout, I don’t feel like I’m going to drop them. It’s a much "softer" feel than cold metal or hard plastic. • The Hex Shape: This is a small detail that makes a huge difference. Since the ends are hexagonal, they don't roll across the floor when I set them down between sets. They also stay put if I’m using them for "renegade rows" or floor work. • Compact Size: They aren’t bulky. I can easily shove them under my bed or in the corner of the closet when I’m done. • No Weird Odor: I was worried they might smell like a tire factory (which happens with some rubber-coated weights), but these had almost no scent right out of the box. The Cons: • Handle Diameter: The handles are a little on the thicker side. I have medium-sized hands and it’s fine, but if you have very small hands, they might feel a bit chunky to wrap your fingers all the way around. • Color Scuffs: The navy blue looks great, but if you clank them together or drop them on concrete, the coating can scuff or show dust pretty easily. The Verdict: If you just need a reliable set of weights for HIIT, Pilates, or general strength training, these are a no-brainer. You're basically getting gym-quality equipment for a fraction of the price. I’ll probably be back for the 15lb set in a few months!
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Reviewed in the United States on January 27, 2026
D
Verified Purchase
Diamond Butterfly
Louisville, US
★★★★★ 5
Love my mat!
Color: Pink, Style: 1/2 Inch
I’m new to stretching and recovery classes, and there is a lot of floor work. I was using the gym mats, but my knees, lower back, and glutes were hurting from being on the floor. This mat is the perfect thickness and feels wonderful during floor exercises. It gives me the extra cushion I need without being difficult to use. It’s also lightweight, durable, easy to clean, and easy to roll up for transport. The pink makes me smile. That said , the mat makes the classes more enjoyable.
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Reviewed in the United States on May 2, 2026

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