Ewent EW3991 User Manual
EW3991
150W Power Inverter 12V to 230V
2 | ENGLISH
EW3991 - 150W Power Inverter 12V to 230V
Table of contents
1.0 Introduction ........................................................................................................... 2
1.1 Functions and features .................................................................................. 2
1.2 Packing contents........................................................................................... 3
2.0 Using the inverter .................................................................................................. 3
2.1 Using the Inverter with cigarette lighter input (CLA) ....................................... 3
2.2 Using the built-in USB port ............................................................................ 4
2.3 Hints for optimal battery usage ...................................................................... 4
3.0 Frequently Asked Questions and other related information .................................... 4
4.0 Service and support............................................................................................... 5
5.0 Warning and points of attention ............................................................................. 5
6.0 Warranty conditions ............................................................................................... 7
1.0 Introduction
Congratulations with the purchase of this high-quality Ewent produc t! This product
has undergone extensive testing by Ewent’s technical experts. Should you
experience any problems with this product, you are covered by a two-year Ewent
warranty. Please keep this manual and the receipt in a safe place.
Register your product now on www.ewent-online.com and receive product updates!
1.1 Functions and features
The EW3991 is a 12 Volts DC inverter. Combined with a battery, such as the battery in
your car, boat or camper, you are able to power a 230-Volt AC device. You can use a
lot of devices on the EW3991 such as your television, your media player (EM7180),
notebook, cool box, radio and many other devices.
The EW3991 also offers an extra USB port which allows you to charge many types of
USB devices such as your mobile Phone, MP3 Player, portable game console and
many more.
Since the EW3991 also has a built-in fan to prevent overheating, this device can be
used in warm environments . I deal when you are on holiday.
The EW3991 has a power surge protection, low voltage protection and the EW3991
has an extra fuse for optimum protection. Thanks to this 3-way security system, there
is no need to worry about your (connected) devices.
3 | ENGLISH
The EW3991 offers the following specifications:
• Input power: 12V DC
• Output Power: 230V AC, 50Hz
• Maximum capacity: 150W, 300W Peak Power (Peak Power: Some devices
require more power at start-up compared to the average power consumption of
the device. The EW3991 can handle peak power up-to 300W for a short
amount of time.)
• USB port: 5V, 500mA
1.2 Packing contents
The following parts need to be present in the packing:
• EW3991 12V Inverter with cigarette lighter input (CLA)
• User manual
2.0 Using the inverter
Turn off your EW3991 using the switch on the back, when not in use.
2.1 Using the Inverter with cigarette lighter input (CLA)
Follow the instructions below to use your EW3991 with the cigarette lighter input
(CLA).
1. Check if the Watt requirement of the device you want to use with the EW3991
does not exceed 1500 Watts. (The wattage should be shown on the device you
want to use, or on the power adapter of the device.)
2. Check if the EW3991 is powered off. The red switch on the back needs be set
to the ‘Off’ position.
3. Take the inverter with cigarette lighter input (CLA). You will notice two cables,
each cable has it’s o wn color.
4. Connect the inverter with cigarette lighter input to the cigarette lighter of your car,
boat, camper or another power source.
5. Connect the device you want to use to the 230V power output of your
EW3991. Do not turn the device on yet if possible.
6. Turn the ignition of your car or boat to the ‘On’ position using the ignition key.
7. Switch the power button of the EW3991 to the ‘On’ position. The green power
LED of the EW3991 will be lit.
8. The connected device should receive power. Turn on the device.
Please check the Watt requirements of the device you wish to use with your
EW3991. Do not use your EW3991 in combination with devices that require more
than 150 Watts. Although the EW3991 can handle peak power up-to 300W, the
average power consumption may not exceed 150W. Eminent is not responsible for
direct or indirect damage to equipment that is used with the EW3991, or damage to
the EW3991itself as a result of improper use.
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