Inductive loads, such as TVs and stereos, require more current to operate than do resistive loads with the same wattage rating. Induction motors, as well as some TVs, may require two to six times their rated wattage to start up. Because the MAXX SST™ inverters have a peak watt power rating, many such appliances and tools may be safely operated. The equipment that needs the highest starting wattage are pumps and compressors that start under load. This equipment can be safely test- ed. If an overload is detected, the inverters will simply shut down until the over- load situation is corrected. Use the front panel switch to turn OFF the inverter, then ON, to reset the inverter.

CAUTION: NO USER-SERVICEABLE COMPONENTS INSIDE. OPENING UNIT WILL VOID WARRANTY.

4.2 DETERMINING BATTERY SIZE:

To determine the minimum battery size that you will need to operate appliances from MAXX SST™ Models, follow these steps:

1.Determine the wattage of each appliance and/or tool you will need to simultaneously operate from the inverter. To do this, read the labels on the equipment to be operated. Usually, power consumption is shown in watts. If it is shown in amps, multiply by 110 to determine the wattage.

2.Estimate the number of hours the equipment will be in use between battery recharges.

3.Determine the total watt-hours of energy use, the total running time and the average power consumption.

To get an estimate of the current (in amps) that the battery must be capable of delivering, divide the load consumption power (in watts) by (10). Keep in mind that most appliances are not operating for long periods of time. For example, a typical home-use coffee maker draws 500 watts during it’s brew time of 5 minutes, but it maintains the temperature of the pot at about 100 watts. Typical use of a microwave is only for a few minutes, sometimes at low power. Some exceptions to brief operating times are lamps, TVs and computers.

4.3 BATTERY OPERATING TIME

FIGURE 6 is a set of curves that show how appliance load in watts or in amperes affects operating time. These curves are only estimates of operating time, dependent upon:

•The condition of the batteries

•The state of charge on the batteries

•The amount of other DC appliances drawing current from the batteries

Three curves were developed for a battery of 50 Ampere Hours (AH) capacity, and three for multiple batteries in parallel. The higher capacity curves are for 120 AH, 200AH and 400AH capacities. These large capacity batteries clear- ly extend operating time at full load. To extend operating time in general, reduce the heavy appliance load to a minimum. Remember, you are operating on stored energy and probably under power loss conditions. All operating time curves assume permanent installation with the correct DC input wire (See Specs Page 18) and a full charge on the batteries.

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Vector VEC049C owner manual Determining Battery Size, Battery Operating Time
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VEC049C specifications

The Vector VEC049C is a sophisticated and portable power inverter designed for rugged automotive and emergency applications. This inverter converts 12V DC battery power into a stable 120V AC power source, making it ideal for powering a variety of electronic devices while on the go. It serves as an essential tool for outdoor enthusiasts, travelers, and those in need of backup power solutions during emergencies.

One of the main features of the VEC049C is its robust construction, which ensures durability in challenging environments. This inverter is equipped with multiple output options, including standard AC outlets as well as USB ports, catering to a wide array of devices such as laptops, smartphones, and small appliances. Its capacity to deliver up to 400 watts of continuous power makes it suitable for charging devices or running equipment like lights and fans.

The Vector VEC049C incorporates advanced technology to enhance both performance and safety. The unit features built-in protection mechanisms against overload, short-circuit, and over-temperature, providing peace of mind during operation. Furthermore, the inverter employs a modified sine wave output, which is often sufficient for less sensitive electronics and ensures efficient energy conversion.

The design of the VEC049C is both compact and lightweight, allowing for easy transport and storage. Users can conveniently stow it in their vehicle or carry it in a backpack, making it a practical option for road trips, camping adventures, and outdoor activities. The unit can easily be plugged into a car’s 12V outlet, allowing for easy access to power whenever it's needed.

In terms of user-friendliness, the Vector VEC049C features an LED status indicator that provides real-time information about the power condition and operation status. This usability aspect is crucial for individuals who may not have technical backgrounds but require reliable power solutions.

Overall, the Vector VEC049C stands out for its combination of portability, safety features, and versatility. With its capacity to bridge the gap between 12V DC and 120V AC power needs, this inverter is an invaluable asset for anyone seeking reliable energy solutions in a mobile format. Whether on a road trip, at a campsite, or during a power outage, the VEC049C ensures that essential devices remain operational and accessible.
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