Magnum MS2000-20B Inverter/Charger

Magnum MS2000-20B Inverter/Charger

On the market, you can find thousands power inverters that look identical to each other. Now please check the Magnum MS2000-20B inverter that looks totally apart from the crowd. Yes, it has a unique design from the outside that will surely catch your attentions.

The Magnum inverter/charger is solidly built so it is a robust unit. It will surely withstand any outer strokes, bumps and other similar stuffs.

Also, the uniquely designed power inverter delivers 2000 watts output power. Using this 2000W power, you will be able to run several appliances at the same time. To connect it with a battery, you need a 12V battery because it requires 12V DC input power, which is further converted to 110V AC power.

The 12V/100A inverter and charger can solve most of your remote power requirements because it delivers good performance and the 2000W power is huge to run most of the appliances.

The Magnum 2000W power inverter is highly protective because it has 20 breakers and transfer relay mechanism. It also features an LED indicator and an optional remote control.

If you have bought this power inverter, you will be enjoying your life because it offers seamless AC power to a wide range of appliances. You will be able to connect any 110V appliance you want. Please make sure that total output power draw does not exceed its total capacity that is 2000W.

Magnum MS2000-20B Inverter/Charger is easy to install. However, you have to follow four steps. According to the manufacturer, you need to connect the inverter to your distribution circuits then connect your shore power cable to the inverter’s easy-to-reach terminal block and then connect the batteries. After that, you need to switch on the power and start supplying electricity to your desired appliances.

About Inverter Review

InverterReview.com lets you read reviews on a wide range of power inverters and electrical appliances! You will be able to find a power inverter of your choice from small to large size inverters. So, if you need an in inverter for your vehicle, home or solar system, InverterReview.com may serve you well.

View all posts by Inverter Review →

Soyond 2000W Pure Sine Wave Inverter Charger, 12V DC to 120V AC Surge 6000W, with 50A Battery AC Charger, Power Inverter w/LCD Remote Panel for RV, Boat,Truck, Compatible with Lifepo4 Battery


Soyond 2000W Pure Sine Wave Inverter Charger, 12V DC to 120V AC Surge 6000W, with 50A Battery AC Charger, Power Inverter w/LCD Remote Panel for RV, Boat,Truck, Compatible with Lifepo4 Battery

$429.00 @ Amazon.com

Product Description

【Pure Sine Wave Inverter Charger】Delivers continuous power of 2000W and surge power up to 6000W, effortlessly driving your everyday electrical appliances with an impressive conversion efficiency of over 92%. Inverter charger can save installation space, You can do this without additional purchases a charger and an ATS! Simplify connection operation and reduce wire cost.

【Multiple Modes】 inverter charger is a key component of backup power (UPS) and energy storage systems (ESS). According to the priority setting of switching between grid mode and inverter mode, Easily charge your battery and power your load. Specially designed for building ups, it automatically switches grid supply to the battery, when the power grid fails, Keeps your devices from losing power.

【Versatile Compatibility】 Seamlessly compatible with a wide range of battery types including GEL, AGM, SLA, FLD, CAL, and LI, providing powerful connectivity for various energy storage needs.You can choose the charging current from 5A to 50A as required. Super wide mains input voltage range of 90-135V,Which is more user-friendly design.

【Reliable Inverter Charger】Provides comprehensive protection against under-voltage, overvoltage, overload, overheating, and short circuits, ensuring peace of mind and safety for your electrical system. The CE/FCC/ROHS/ETL certified products guarantee both safety and quality assurance

【LCD Remote Panel】32FT cable makes easily to control your device, even if installed in another room. The monitoring screen provides instant access to the real-time status of the battery, inverter, and loads. Buy with Confidence!

Product Details
Brand: soyond
Model #: 2000 Watt 12V DC to 120V AC
Warranty: 1 year
Color: 2000 Solar Inverter Charger
Dimensions: 20 X 11 X 7.6 Inches (Length X Width X Height)
Price: $429.00
Soyond 2000W Pure Sine Wave Inverter Charger, 12V DC to 120V AC Surge 6000W, with 50A Battery AC Charger, Power Inverter w/LCD Remote Panel for RV, Boat,Truck, Compatible with Lifepo4 Battery

ECO-WORTHY 1000W Pure Sine Wave Inverter Charger, Power Inverter with 55A LiFePO4 Battery Charger, 12V to 110V for UPS Deep-Cycle Batteries RV Boat Home


ECO-WORTHY 1000W Pure Sine Wave Inverter Charger, Power Inverter with 55A LiFePO4 Battery Charger, 12V to 110V for UPS Deep-Cycle Batteries RV Boat Home

$199.49 @ Amazon.com (Save 5%)

Product Description

1000W Inverter & 55A Charger 2-in-1: ECO-WORTHY inverter charger combines both an inverter and battery charger in one unit, delivering a powerful 55A charging capability for 12V LiFePO4 batteries and 1000W output (peak power 2000W) to efficiently power appliances such as microwaves and refrigerators

Uninterrupted Power Supply (UPS): This inverter charger features an automatic switch to battery power within 20ms during grid failures, ensuring a reliable and uninterrupted power supply to your device while protecting it from damage

Full System Protection: Utilizing pure sine wave technology, the inverter charger provides stable and efficient output while protecting your electronic devices. It includes multiple protections such as high/low voltage, overload, overcurrent, overtemperature, and output short circuit, making it safer to use

Intelligent LiFePO4 Charger: Equipped with 0V charging capability, this charger can effectively activate BMS-protected lithium batteries, along with smart 3-level and trickle charging to maintain optimal battery health

LED Indicators and Cooling Fan: The inverter charger includes error LED indicators and a buzzer for real-time alarm. An internal cooling fan activates automatically when the temperature is >45°C or the RMS value of the AC current is >2.5A, ensuring stable output performance

Product Details
Brand: ECO-WORTHY
Warranty: 1 year
Color: black
Dimensions: 3.9 X 13.2 X 8.4 inches (Length X Width X Height)
Price: $199.49 (Save 5%)
ECO-WORTHY 1000W Pure Sine Wave Inverter Charger, Power Inverter with 55A LiFePO4 Battery Charger, 12V to 110V for UPS Deep-Cycle Batteries RV Boat Home

VEVOR Pure Sine Wave Inverter Charger, 2000 Watt, DC 12V to AC 120V, Battery Charger with LCD Display, Remote Control, Solar Inverter for Off-Grid Solar RV Boat Home, Compatible with Various Batteries


VEVOR Pure Sine Wave Inverter Charger, 2000 Watt, DC 12V to AC 120V, Battery Charger with LCD Display, Remote Control, Solar Inverter for Off-Grid Solar RV Boat Home, Compatible with Various Batteries

$292.99 @ Amazon.com

Product Description

2000W Pure Sine Wave Inverter: Our inverter charger provides reliable, uninterrupted power for devices such as refrigerators and medical equipment. Whether it's an unexpected home power outage or an off-grid adventure, this charger ensures a secure and stable power supply. (It is recommended to keep the load on each outlet below 1.2KW.)

5 Working Modes: The solar inverter charger includes Unattended Mode, Grid Priority Mode, Battery Priority Mode, Energy-Saving Mode, and Generator Mode, catering to various lifestyles, especially for RV travel, outdoor camping, and backup power during home outages.

Wide Compatibility: Our pure sine wave inverter charger is designed for 12V battery systems! Compatible with a variety of battery types, including LiFePO4, lithium-ion, AGM, sealed lead-acid, and flooded lead-acid batteries.

Remote Control: The power inverter charger comes with a 32.8ft/10m remote cable and a detachable controller, allowing you to place the charger in the optimal location via wiring. Easily control and monitor the device remotely for more convenient power management!

Comprehensive Security Features: The DC to AC inverter charger is equipped with multiple built-in protection functions, including overload protection, short-circuit protection, over-temperature protection, over-current protection, battery high/low voltage protection, and grid high/low voltage protection. These security mechanisms ensure both your equipment and batteries are secured from electrical risks.

Product Details
Brand: VEVOR
Model #: BL-W2012V-L
Size: 12V 2000W
Price: $292.99
VEVOR Pure Sine Wave Inverter Charger, 2000 Watt, DC 12V to AC 120V, Battery Charger with LCD Display, Remote Control, Solar Inverter for Off-Grid Solar RV Boat Home, Compatible with Various Batteries

ExpertPower 2000W Pure Sine Wave Inverter Charger | Peak 6000W | DC 12V - AC 110V | LifePO4/ Lithium Battery Compatible | Auto Transfer Switch | LCD Display


ExpertPower 2000W Pure Sine Wave Inverter Charger | Peak 6000W | DC 12V - AC 110V | LifePO4/ Lithium Battery Compatible | Auto Transfer Switch | LCD Display

$449.99 @ Amazon.com

Product Description

Wide-Spectrum Compatibility: The ExpertPower Pure Sine Wave Inverter/ 40A Charger is designed to meet the needs of all battery systems including AGM, Wet, Gel, and LiFePO4 with 8 profiles and built-in 30A transfer switch with UPS functionality that automatically switches between shore power and battery power in an industry leading 5ms.

Intelligence Driven CPU: An LED display provides a methodical user interface that streamlines data on system status (i.e. Priority Mode, Frequency, Error Codes) and battery status (i.e. voltage, load) in an easy to understand way without compromising its practical capabilities of 90-99% efficiency. Power-Save mode consumes max. 10W with no load.

Convenient Prioritization: The inverter-charger includes priority settings that automatically switch between shore power and battery power to easily charge your battery system with ease and even able to be utilized without battery hookup for shore-power-only maintenance days, ensuring your power is ready when you need it. The package also includes a 26ft Smart Controller that allows you to adjust the inverter's settings from any comfortable range within your RV/Camper.

Premium Quality: The unit is composed of a clean-cut, steel-hardened iron case equipped with copper terminals and a double ball-bearing fan for maximized low-audibility cooling of the unit under high-power loads.

System-Wide Protection: The CPU utilizes a complex series of algorithms that detect dangerous conditions protecting both the unit and your battery system from overloading, overcharging, overheating, deep discharge, and short circuits for full peace of mind.

Product Details
Brand: ExpertPower
Model #: IVOCH2KW
Size: 2KW
Dimensions: 18.38 X 7.63 X 7.8 inches (Length X Width X Height)
Price: $449.99
ExpertPower 2000W Pure Sine Wave Inverter Charger | Peak 6000W | DC 12V - AC 110V | LifePO4/ Lithium Battery Compatible | Auto Transfer Switch | LCD Display

ECO-WORTHY 2-in-1 Inverter Charger, 25A LiFePO4 Battery Charger Automatic Battery Maintainer & Trickle Charger, 600W Pure Sine Wave Inverter Output, 20ms UPS Backup Power for Houses RV Camp Off-Grid

ECO-WORTHY 2-in-1 Inverter Charger, 25A LiFePO4 Battery Charger Automatic Battery Maintainer & Trickle Charger, 600W Pure Sine Wave Inverter Output, 20ms UPS Backup Power for Houses RV Camp Off-Grid

$129.99 @ Amazon.com

Product Description

Lifepo4 Charger with Inverter Function: ECO-WORTHY 25A battery charger provides full-speed charging for 12V Lifepo4 battery;Features 600W inverter output function, peak power of 1200W, conversion efficiency of over 90%, easy to drive daily electrical appliances such as microwave ovens, computers, etc

Uninterruptible Power Supply (UPS): The inverter charger has UPS function and automatically switches to inverter mode within 20ms of power outage, preventing sudden power outage from affecting normal working and protecting electrical equipment from damage

Lifepo4 Battery Activation: The charger has 0V charging mode; When the lithium battery is protected by BMS, it can be reactivated to restore normal voltage; Intelligent 3-level charging mode, trickle charging to maintain battery health

Pure Sine Wave Technology: Pure sine wave technology ensures AC power equivalent to grid power, providing efficient and stable output to protect electronic devices;Cooling fan starts when the inverter charger's temperature is detected to be >45°C or the RMS value of the AC current is >2.5A

Full System Protection: Error LED indicators and buzzer, real-time alarm to protect device safety; It has multiple protections such as high and low voltage, overload, overcurrent, over temperature, and output short circuit, making it safer to use

Product Details
Brand: ECO-WORTHY
Model #: 25A
Warranty: 1 year
Color: Black
Dimensions: 11.02 X 5.71 X 2.72 inches (Length X Width X Height)
Price: $129.99
ECO-WORTHY 2-in-1 Inverter Charger, 25A LiFePO4 Battery Charger Automatic Battery Maintainer & Trickle Charger, 600W Pure Sine Wave Inverter Output, 20ms UPS Backup Power for Houses RV Camp Off-Grid

BESTEK 150W Power Inverter 12V to 110V Voltage Converter PD30W QC18W Car Charger Power Adapter with Charging Ports


BESTEK 150W Power Inverter 12V to 110V Voltage Converter PD30W QC18W Car Charger Power Adapter with Charging Ports

$24.99 @ Amazon.com

Product Description

BESTEK Advantages: America's leading power inverter brand. Provides 150-watt continuous DC 12V to AC 110V power inverter, featuring 1 AC outlet, 1 30W PD USB-C port, and 1 18W QC USB-A port for convenient use.

Efficient Independent Fast Charging: The total USB power is 48W. When both USB ports are used simultaneously, they do not affect each other's power output. This fast Type-C car inverter supports 30W PD and 18W QC high output, enabling simultaneous fast charging of mainstream phones. The PD port is 6X faster than a 2.4A charger.

Multiple Protections: Built-in cooling fan and auto-shutdown functions prevent overheating, overloading, low load, short circuit, low voltage, and overvoltage of devices and vehicles.

Rotating Cigarette Lighter Design: It can be adjusted up to 90 degrees, making it convenient for use in tight spaces. The smart cooling fan automatically rotates at different speeds according to power load and temperature, which helps to reduce fan noise. Moreover, the high-speed cooling fan protects the inverter from overheating.

Portable and Compact Design: This lightweight inverter is space-saving and easy to store, making it ideal for long car trips, family vacations, and camping. It can be used to charge string lights, laptops, tablets, breast pumps, GoPro cameras, game consoles, Kindles, lights, iPhones, iPads, dashcams, car vacuum cleaners, LED table lamps, mini-fridges, and other electronic devices.

RELIABLE QUALITY WARRANTY: ETL-certified product ensures safety and quality. If you have any questions or dissatisfaction with your purchase,24H x 7D technical and friendly customer service support, BESTEK guarantees you a refund within 180 Days, and an 18-month Product Replacement Warranty.

Product Details
Brand: BESTEK
Model #: MRI1511C
Warranty: No
Size: 150W
Dimensions: 2.56 X 1.5 X 5.5 inches (Length X Width X Height)
Price: $24.99
BESTEK 150W Power Inverter 12V to 110V Voltage Converter PD30W QC18W Car Charger Power Adapter with Charging Ports

ECO-WORTHY 3000W 12V Pure Sine Wave Inverter Charger,2 in 1 Solar Inverter/Battery Charger,12V DC to 120V AC Converter,25A~100A Adjustable Current Charge,UPS Mode(30ms)Ideal for Off Grid,RV,Home,Cabin


ECO-WORTHY 3000W 12V Pure Sine Wave Inverter Charger,2 in 1 Solar Inverter/Battery Charger,12V DC to 120V AC Converter,25A~100A Adjustable Current Charge,UPS Mode(30ms)Ideal for Off Grid,RV,Home,Cabin

$559.99 @ Amazon.com

Product Description

[ Max 100A Charge and 3000W Inverter 2 IN 1 ]:ECO-WORTHY Inverter charger combines 3000W inverter and 25A to 100A battery charger into a complete device with peak conversion efficiency ≥90%. A pure sine wave inverter with a rated power of 3000W and a peak power of 6000W. Inverter chargers save installation space, simplify connection operations and reduce wiring harness costs, making them more suitable for home and RV, trailer, truck, boat, mobile business, etc

[ Charge And Use At The Same Time ]:ECO-WORTHY Inverter charger features backup power supply (UPS) and current regulation. Easily charge the battery and power the load depending on the priority setting for switching between grid mode and inverter mode. When the grid fails, it automatically switches the grid power to the battery to provide uninterruptible power to the load. When charging batteries of different capacities, different current sizes can be selected for charging

[ Compatible with 12V LiFePO4 GEL SEL AGM ]:DC 12V to 120V AC inverter chargers are compatible with 12-volt lithium batteries (LiFePO4 lithium batteries), AGM, GEL, etc. The ECO-WORTHY inverter charger is compatible with almost all popular 12-volt battery types and features lithium battery activation, trickle maintenance, and automatic disconnect with full charge. You can choose charging current from 25A to 100A according to your needs

[ Six Types Protection, Safer Electricity Use ]:3000W pure sine wave inverter charger with battery undervoltage protection, battery overvoltage protection, output overload protection, output overcurrent protection, over-temperature protection, output short-circuit protection and other functions, to provide all-round protection for all equipment. It can also run coffee makers, microwaves, air conditioners, water heaters, water pumps, refrigerators and other appliances

[ LED screen ]:An optional LED display (sold separately) can be installed on the front, allowing user to view and set different modes. User can monitor the screen to gain real-time view of the battery, inverter and load status. You can purchase this display with 16FT Remote Control Cable separately(The bundled product is visible at the front desk). It makes it easier to control your device, even if installed in another room

Product Details
Brand: ECO-WORTHY
Model #: US-L03NBCDQ3KWUS-1
Warranty: 1 year manufacturer
Color: Yellow
Dimensions: 17 X 11.3 X 4.3 inches (Length X Width X Height)
Price: $559.99
ECO-WORTHY 3000W 12V Pure Sine Wave Inverter Charger,2 in 1 Solar Inverter/Battery Charger,12V DC to 120V AC Converter,25A~100A Adjustable Current Charge,UPS Mode(30ms)Ideal for Off Grid,RV,Home,Cabin

BMK 200W Car Power Inverter Newly Car Plug Adapter Outlet Charger DC 12V to 110V Car Inverter with 1.2A&2.4A USB, 1 QC3.0 USB and 1 Type C Ports Black


BMK 200W Car Power Inverter Newly Car Plug Adapter Outlet Charger DC 12V to 110V Car Inverter with 1.2A&2.4A USB, 1 QC3.0 USB and 1 Type C Ports Black

$27.99 @ Amazon.com

Product Description

【Powerful 200W Charging Inverter】This car power inverter offer continuous DC to AC power which featuress with dual 110V AC outlets and 4 USB ports(2.4A USB+1.2A USB+QC3.0+Type-C), 4 USB ports can charge your phones and tablets simultaneously. Cigarette lighter socket design great for your string lights, laptop, game console, kindle,DVD, iPad etc. NOTE: Please kindly make sure that your device's power and its instantaneous power are less than 200W, otherwise, your devices will not be supported.

【4 USB Fast Charging and Switches ON/OFF for AC Outlets】 Four usb ports can work at the same time without opening switches and the total current is 6.2A when you use simultaneous; QC ports can shorten your charging time and refill your battery in one hours; USB C working as both input and output and let you fast refuel your charger which is perfectly fit your newest iPhone, Android. Built in on/off switch to control the car adapter electric plug for safer usage.

【Smart Cooling fan and LCD screen】 Built-in smart temperature-controlled cooling fan helps reduce heat and prevent shortages, and the frequency of rotation will become faster as the temperature rises, but that is normal phenomenon. In addition, the LCD screen will show you the dc input voltage and then you can detect the status of the car outlet adapter when connected with the cigarette lighter plug and charge your electric devices.

【Superior Safety】 Built-in fuse to protect your device and comprehensive multiprotect safety system includes overcharge protection, short circuit protection,temperature control, under voltage charging,over voltage overloads protection.It helps protect your charging devices and extends the time of being used. Can be use for DC 12V cars and Tesla!

【Support Services 】Pouring our heart into serving for providing the best power inverter t you! We accept return & replacement and 24-hour consulting. Any problem can be solved within 12 hours and please feel free to contact us with any question.

Product Details
Brand: BMK BMK
Model #: A2LG37GR6X8NOG
Warranty: 2 Year Manufacturer
Size: 5.9 *3*1.3 inches
Color: Black
Dimensions: 5.9 X 3 X 1.3 inches (Length X Width X Height)
Price: $27.99
BMK 200W Car Power Inverter Newly Car Plug Adapter Outlet Charger DC 12V to 110V Car Inverter with 1.2A&2.4A USB, 1 QC3.0 USB and 1 Type C Ports Black

BESTEK 300W Power Inverter DC 12V to 110V AC, Durable Aluminum Housing Car Charger Adapter with 4.8A Dual USB Fast Charging Port, 3ft Car Plug in Cigarette Lighter Outlet for Phone, Laptop


BESTEK 300W Power Inverter DC 12V to 110V AC, Durable Aluminum Housing Car Charger Adapter with 4.8A Dual USB Fast Charging Port, 3ft Car Plug in Cigarette Lighter Outlet for Phone, Laptop

$29.99 @ Amazon.com (Save 25%)

Product Description

BESTEK Advantage: America's leading power inverter brand. Provides 300 Watts continuous DC to AC power and 700 Watts instantaneous power, featuring 2 AC outlets and 2 USB ports

Fast Charging: two 110V AC outlets for charging larger devices such as laptops and tablets, 2 USB charging ports (0-2.4A) for powering USB compatible devices, a good choice as requisite car accessories

Ultra Compact and Lightweight: iPhone-sized design ideal for use on vacations, work trips, and camping. 24 inch cigarette lighter plug makes the power inverter can be plugged into almost any vehicle

Multi-Protection: built-in 40 amps fuse to protect your device. Safe charging design provides protection against, overheating, under and over voltage charging, short circuiting

Durable metal housing provides advanced protection from drops and bumps.Smart cooling fan system makes the car power inverter very silent when operating,and the fan runs faster when the device gets warmer or output power exceeds 70W

Product Details
Brand: BESTEK
Model #: MRI3011BU
Warranty: 18 Months
Size: 1 - Power Inverter
Color: Red
Dimensions: 4.8 X 3.1 X 1.9 inches (Length X Width X Height)
Price: $29.99 (Save 25%)
BESTEK 300W Power Inverter DC 12V to 110V AC, Durable Aluminum Housing Car Charger Adapter with 4.8A Dual USB Fast Charging Port, 3ft Car Plug in Cigarette Lighter Outlet for Phone, Laptop

300W Power Inverter 20V to 110V for Dewalt Battery: VoLtTech Battery Inverter DC Charger Adapter with 2 AC Outlet & 2 USB Ports for Car, Vehicles, Laptop, Computer, Phone, String Light, Fan


300W Power Inverter 20V to 110V for Dewalt Battery: VoLtTech Battery Inverter DC Charger Adapter with 2 AC Outlet & 2 USB Ports for Car, Vehicles, Laptop, Computer, Phone, String Light, Fan

$35.99 @ Amazon.com (Save 10%)

Product Description

Premium 300W Power Inverters: This VoLtTech 300W Car Power Inverter is a versatile device that combines a car plug in adapter outlet, a power converter, and a charger in one compact unit. It features 2 AC outlets, 3 USB-A port (27W 5V 2.4A/3A), and 1 USB-C (18W 5V 3A) port, allowing you to power multiple devices simultaneously while on the go.

Fast and Efficient Charging: Equipped with PD 18W USB-C and QC 27W USB-A ports, this battery adapter can rapidly charge most phones and tablets (Max 5.4A total output). Additionally, the AC 110v outlets are perfect for powering laptops, computers, game consoles, TVs, DVD players and other electronic devices. With its high power output and fast charging capabilities, it is an essential accessory for road trips, camping, or everyday use.

Compatible with DeWalt 20V Batteries: Works seamlessly for dwalt 20v batteries, enabling you to charge your devices on the go—even in areas without power. Just bring your battery (Note: battery NOT included). Compatible models include DCB206, DCB204, DCB181, DCB182, DCB200, DCB203, DCB204-2, DCB206-2, and more.

High Quality Metal Housing: This power supply provides strong protection and efficient heat dissipation, ensuring long-lasting performance. This power adapter equipped with advanced intelligent chips that automatically detect the voltage and current requirements of different devices, preventing overheating, undervoltage, overcurrent, overvoltage, overload, and short circuits. Your safety is always our top priority.

Compact and Portable Design: Just about cell phone size - 5 x 3 x 1.5 inches, this charger adapter is extremely portable and space-saving.

Product Details
Brand: VoLtTech
Model #: 458a9acc-99f5-4d93-be18-a6491505730e
Warranty: 1 Year
Dimensions: 5 X 3 X 1.5 inches (Length X Width X Height)
Price: $35.99 (Save 10%)
300W Power Inverter 20V to 110V for Dewalt Battery: VoLtTech Battery Inverter DC Charger Adapter with 2 AC Outlet & 2 USB Ports for Car, Vehicles, Laptop, Computer, Phone, String Light, Fan

Please share this:

Facebook         Twitter         Linkedin         Pinterest        

Leave a Reply

Your email address will not be published. Required fields are marked *