Southwire Elite 500 Series Solar Generator

The Southwire Elite 500 Series Solar Generator offers robust and reliable portable power, making it an indispensable solution for various needs. This impressive unit features a 515Wh Backup Lithium Battery, providing substantial energy storage for prolonged use. Indeed, its 120V/500W Pure Sine Wave AC Outlet ensures clean and stable power, safeguarding sensitive electronics from potential damage, a critical factor for modern devices. Moreover, with its continuous 500W output and 1000W peak surge capability, it can power a wide array of small appliances and essential electronics, from laptops and phones to mini-fridges and medical equipment. Thus, the Southwire Elite 500 Series is perfect for home backup power during unexpected outages.

Southwire Elite 500 Portable Lithium Power 515Wh 500W AC with 100W Solar Panel

View on Amazon

Furthermore, this versatile Solar Generator comes complete with a 100W Solar Panel, transforming it into an eco-friendly and self-sufficient power source. Therefore, off-grid charging becomes effortlessly achievable. The bundled 100W solar panel can fully recharge the power station in as little as 6 hours under optimal sunlight. This makes it an ideal companion for outdoor adventures. Consequently, whether you’re embarking on a camping trip, an RV excursion, or simply need emergency power during a blackout, this portable powerhouse delivers. Additionally, its lightweight design, weighing around 11 pounds, enhances its portability, allowing you to take reliable electricity wherever your journey leads.

Ultimately, the Southwire Elite 500 Series is engineered for convenience and durability. It offers six diverse charging methods, including AC wall outlet, car DC outlet, USB Power Delivery, and even via another generator, ensuring you can always recharge it, regardless of your location. Beyond its impressive technical specifications, the unit boasts an intuitive high-contrast LCD screen displaying crucial power metrics and a built-in LED light with an SOS function for emergencies. For any situation requiring dependable off-grid power or a reliable home backup power solution, the Southwire Elite 500 Series Solar Generator stands out as a leading choice among portable power stations. Read more…

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 →

Southwire Elite 500 Series, 515Wh Backup Lithium Battery, 120V/500W Pure Sine Wave AC Outlet, Solar Generator (Solar Panel Not Included) for Home Backup Power, Emergency Power, Camping and more


Southwire Elite 500 Series, 515Wh Backup Lithium Battery, 120V/500W Pure Sine Wave AC Outlet, Solar Generator (Solar Panel Not Included) for Home Backup Power, Emergency Power, Camping and more

$275.00 @ Amazon.com

Product Description

An industry-best with its six ways to charge including a car DC outlet, solar panel, wall outlet, USB Power Delivery, PD + AC, or a generator

Conveniently charges from 0% to 100% in as little as 4 hours

Features a 515 watt-hour capacity UL-certified lithium-ion battery for optimal power on-the-go

Enjoy running a 32” LED TV for more than 9 hours at a time

Industry best! 6 ways to charge - car DC outlet, solar panel, wall outlet, USB Power Delivery, PD + AC or with a generator

Product Details
Brand: SOUTHWIRE
Model #: PEP-S500
Warranty: 2 year manufacturer
Size: 515 Watt Hours
Color: Black/Copper
Dimensions: 13 X 8.8 X 11.4 inches (Length X Width X Height)
Price: $275.00
Southwire Elite 500 Series, 515Wh Backup Lithium Battery, 120V/500W Pure Sine Wave AC Outlet, Solar Generator (Solar Panel Not Included) for Home Backup Power, Emergency Power, Camping and more

Southwire Elite 500 Series, 515Wh Backup Lithium Battery, 120V/500W Pure Sine Wave AC Outlet, Solar Generator, with 100W Solar Panel Included for Home Backup Power, Emergency Power, Camping and more


Southwire Elite 500 Series, 515Wh Backup Lithium Battery, 120V/500W Pure Sine Wave AC Outlet, Solar Generator, with 100W Solar Panel Included for Home Backup Power, Emergency Power, Camping and more

$409.47 @ Amazon.com (Save 49%)

Product Description

Features a 515 watt-hour capacity UL-certified lithium-ion battery for optimal power on-the-go

Perfect for emergency backup power, camping, RVs, and remote power

2 AC Outlets (3 Prongs), 4 USB-A Ports, 1 USB-C Ports, PD input/output port rated power 60W + 27W Outlet, 2 separate DC output with 12V/5A (max) and one DC car output with 12V/10A (max)

Six ways to charge the Portable Power Station including a car DC outlet, solar panel, wall outlet, USB Power Delivery, PD + AC, or a generator

100-Watt Solar Panel charges the Portable Power Station from 0% to 100% in as little as 6 hours

Product Details
Brand: Southwire
Model #: PEP-S500
Warranty: 2 year manufacturer
Size: 515 Watt Hours
Color: Black/Copper
Dimensions: 15.75 X 19.5 X 12.4 inches (Length X Width X Height)
Price: $409.47 (Save 49%)
Southwire Elite 500 Series, 515Wh Backup Lithium Battery, 120V/500W Pure Sine Wave AC Outlet, Solar Generator, with 100W Solar Panel Included for Home Backup Power, Emergency Power, Camping and more

Jackery Solar Generator 300, 293Wh Backup Lithium Battery with 1XSolar Panel SolarSaga 100W, 110V/300W Pure Sine Wave AC Outlet for RV Outdoors Camping Travel Blackout


Jackery Solar Generator 300, 293Wh Backup Lithium Battery with 1XSolar Panel SolarSaga 100W, 110V/300W Pure Sine Wave AC Outlet for RV Outdoors Camping Travel Blackout

$499.00 @ Amazon.com

Product Description

SPEED UP YOUR RECHARGEABILITY: It takes only 2 hours to recharge 80% battery of the power station through the wall outlet and 60W PD USB-C port simultaneously. You can also recharge your power station with an AC adapator when at home, through the car outlet during a road trip or simply use a Jackery SolarSaga 100.

SAFE & STEADY POWER SUPPLY: Armed with a 293Wh lithium-ion battery pack, the Explorer 300 features 2 Pure Sine Wave AC outlets that deliver stable and safe 300W power. The portable power station weighs only 7.1 pounds. You can simply rest assured in outdoor off-grid activities.

POWER YOUR EXPECTATIONS: Featuring 2* AC outlet, 1* PD 60W USB-C port (input/output supported) , 1* fast charge 3.0 port, 1*USB-A port and 1* DC car port, the power station can recharge itself and charge (up to) 6 devices (e.g.Drones, Macbook, Cameras, etc.) at the same time to satisfy your outdoor needs.

GREEN POWER SUPPLY: The power station is compatible with the Jackery SolarSaga 100 solar panel. The integrated MPPT controller enables the solar generator set to operate at its max power point, so that it speeds up the battery recharge, making them ideal portable power kits for tent camping, overland journey and etc.

WHAT YOU GET: 1* Jackery Explorer 300 Portable Power Station , 1*Solar Panel SolarSaga 100W, 1*AC adapter, 1* car charger cable, 1* user guide (Note: The Explorer 300 Generator and the 100W Solar Panel are shipped separately.)

𝐈𝐦𝐩𝐨𝐫𝐭𝐚𝐧𝐭: 𝐏𝐥𝐞𝐚𝐬𝐞 𝐩𝐫𝐨𝐯𝐢𝐝𝐞 𝐚𝐧 𝐚𝐜𝐭𝐮𝐚𝐥 𝐚𝐝𝐝𝐫𝐞𝐬𝐬 𝐟𝐨𝐫 𝐚𝐧𝐲 𝐨𝐟 𝐲𝐨𝐮𝐫 𝐨𝐫𝐝𝐞𝐫𝐬. 𝐔𝐧𝐟𝐨𝐫𝐭𝐮𝐧𝐚𝐭𝐞𝐥𝐲, 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬 𝐜𝐚𝐧𝐧𝐨𝐭 𝐛𝐞 𝐝𝐞𝐥𝐢𝐯𝐞𝐫𝐞𝐝 𝐭𝐨 𝐣𝐮𝐬𝐭 𝐚 𝐏𝐎 𝐁𝐨𝐱 𝐚𝐝𝐝𝐫𝐞𝐬𝐬.

Product Details
Brand: Jackery
Model #: Explorer 300
Warranty: 2 year manufacturer
Size: ‎9.1"L x 5.2"W x 7.8"H
Color: Solar Generator 300 100W
Dimensions: 9.1 X 5.2 X 7.8 inches (Length X Width X Height)
Price: $499.00
Jackery Solar Generator 300, 293Wh Backup Lithium Battery with 1XSolar Panel SolarSaga 100W, 110V/300W Pure Sine Wave AC Outlet for RV Outdoors Camping Travel Blackout

Jackery Portable Power Station Explorer 500, 518Wh Outdoor Solar Generator Mobile Lithium Battery Pack with 110V/500W AC Outlet for Home Use, Emergency Backup,Road Trip Camping (Solar Panel Optional)


Jackery Portable Power Station Explorer 500, 518Wh Outdoor Solar Generator Mobile Lithium Battery Pack with 110V/500W AC Outlet for Home Use, Emergency Backup,Road Trip Camping (Solar Panel Optional)

$499.00 @ Amazon.com

Product Description

LONG LASTING ENDURANCE: The Explorer 500 portable power station is built with the lithium-ion battery pack, in a safely designed frame structure to maximize, and long last the power for every single use of outdoor adventures and home use.

SUPPORT PASS-THROUGH CHARGING: This power station features 1* AC outlet (110V 500W 1000W Peak), 3*USB-A ports, 2* DC ports, and 1*car port. Its Battery Management System governs each individual cell, improving the battery life cycle while being pass-through charged.

DESIGNED FOR PORTABILITY: Same size as a basketball, this Explorer 500 is easy to carry with its solid handle, making it a compact and reliable choice for scenarios of camping, road-trip, RV, and home backup.

WHAT YOU GET: 1* Jackery Explorer 500 Portable Power Station (518Wh Power Station), 1*AC adapter, 1* car charger cable, 1* user manual.

Important: Please provide a physical address for orders - products cannot be delivered to just a PO Box address.

Product Details
Brand: Jackery
Model #: Explorer 500
Warranty: 2 year manufacturer
Size: ‎11.8"L x 7.6"W x 9.2"H
Color: Black
Dimensions: 11.83858266509 X 7.59055117336 X 9.20078739219 inches (Length X Width X Height)
Price: $499.00
Jackery Portable Power Station Explorer 500, 518Wh Outdoor Solar Generator Mobile Lithium Battery Pack with 110V/500W AC Outlet for Home Use, Emergency Backup,Road Trip Camping (Solar Panel Optional)

MARBERO 237Wh Solar Generator with Solar Panel Included Portable Power Station 300W Pure Sine Wave with Foldable Solar Panel 60W Set for Camping Outdoor Hiking Fishing Emergency

MARBERO 237Wh Solar Generator with Solar Panel Included Portable Power Station 300W Pure Sine Wave with Foldable Solar Panel 60W Set for Camping Outdoor Hiking Fishing Emergency

$162.44 @ Amazon.com

Product Description

SOLAR POWERED GENERATOR WITH SOLAR PANEL INCLUDED: With a 237Wh/64000mAh high-quality lithium-ion battery pack, this MARBERO portable power station M823 is ideal for charging small devices like smartphones, tablets, laptops, and headphones and it's also perfect for outdoor adventures, even for overnight stays or extended periods off the grid. (NOTE: Using devices that exceed 300W may damage this portable generator, particularly those with heating elements and etc.)

MULTIPLE OUTPUTS FOR VERSATILE CHARGING: This portable power station with solar panel included is equipped with a variety outputs. With 2* AC wall outlets with pure sine wave (300W rated, 375W peak; includes 2-prong and 3-prong), 2*USB-A QC3.0 ports(5V/3A, 9V/2A, 12V/1.5A, up to 18W), 2*USB-A ports(5V/2.1A, 15W Max), 1*USB-C port(5V/3A, 9V/2A, 12V/1.5A, 18W PD), and 1*DC output port(12-16.8V/10A, 14A Max). The portable power kit allowing you to charge your devices directly from a wall AC outlet.

BRIGHT LED FLASHLIGHT: MARBERO M823 solar powered generator power station with solar panels included features LED flashlights with three modes: flashlight, strobe, and SOS. These modes are highly practical and convenient, providing reliable illumination during emergencies, whether indoors or outdoors, on dark nights.

OPTIMAL PERFORMANCE: This foldable solar panel features high-efficiency solar arrays with a conversion rate of 21.5-23.5%, effectively converting solar power into electricity. It also includes a smart chip that recognizes your device, ensuring optimal charging speed while protecting against overcharging and overloading. Enjoy reliable and efficient charging for all your devices with peace of mind.

HOW TO USE TOGETHER: 1) Start by connecting the provided DC cable to the solar panel's DC port; 2) Next, select the appropriate DC adapter from the other end of the cable and attach it securely to your MARBERO portable power station solar generator M823; 3) Finally, place the solar panel in direct sunlight. The panel will efficiently convert solar power into electrical energy, which will then be transferred to your solar powered generator, ensuring you have reliable power whenever you need it.

Product Details
Brand: MARBERO
Model #: M823SL60
Warranty: 12 MONTHS WARRANTY: Marbero portable power supply can offer 12 months warranty and 7*24 customer service after your purchase. If you have any problem, please feel free to contact us via Amazon's message.
Color: SOLAR GENERATOR M823 WITH 60W SOLAR
Dimensions: 12 X 10 X 16 inches (Length X Width X Height)
Price: $162.44
MARBERO 237Wh Solar Generator with Solar Panel Included Portable Power Station 300W Pure Sine Wave with Foldable Solar Panel 60W Set for Camping Outdoor Hiking Fishing Emergency

Jackery Solar Generator 5000 Plus with 500W(85Wx6) Solar Panels, 5040Wh LiFePO4 Battery Power Station, 120V/240V 7200W AC Output, Portable Generator for Home Battery Backup, Power Outages


Jackery Solar Generator 5000 Plus with 500W(85Wx6) Solar Panels, 5040Wh LiFePO4 Battery Power Station, 120V/240V 7200W AC Output, Portable Generator for Home Battery Backup, Power Outages

$5,199.00 @ Amazon.com

Product Description

Home Backup: With 7200W to 14400W expandable output and 5kWh to 60kWh capacity, the Solar Generator 5000 Plus powers your whole home for over 1 day with a single unit. Based on average daily electricity usage during blackouts in American households, when expanded to 30kWh, it provides backup for up to 7 days, and with 60kWh, it can last up to 15 days.

Versatile for All: Equipped with 120V/240V dual voltage output, the Jackery Solar Generator 5000 Plus easily powers everyday devices and heavy-duty equipment like dryers, water pumps, and ovens, while also serving as a reliable solution for recharging RVs.

0ms UPS: Thanks to its 0ms response time in Online UPS mode, the Solar Generator 5000 Plus automatically switches to stored power during blackouts, ensuring your critical devices like your refrigerator, WiFi, aquarium, computer, and data center, remain powered and functional.

Smart App Control: The Jackery App allows you to monitor your solar generator in real-time and adjust charge/discharge settings via WiFi or Bluetooth. Features like automatic off-peak charging and peak shaving with the smart transfer switch help lower your energy bills.

Quiet and Clean: The Solar Generator 5000 Plus is your sustainable, zero-emission alternative to diesel generators, eliminating CO and pollution risks. Charging silently at under 30dB, this whisper-quiet solar generator creates a peaceful environment for reading or other activities—even during power outages.

Product Details
Brand: Jackery
Model #: JE-5000A
Warranty: 5
Dimensions: 14.1 X 14.7 X 18.6 inches (Length X Width X Height)
Price: $5,199.00
Jackery Solar Generator 5000 Plus with 500W(85Wx6) Solar Panels, 5040Wh LiFePO4 Battery Power Station, 120V/240V 7200W AC Output, Portable Generator for Home Battery Backup, Power Outages

EBL Portable Power Station 500, 110V/500W Solar Generator(Surge 1000W), 519.4Wh Backup Lithium Battery for Outdoor Home Emergency


EBL Portable Power Station 500, 110V/500W Solar Generator(Surge 1000W), 519.4Wh Backup Lithium Battery for Outdoor Home Emergency

$279.99 @ Amazon.com (Save 30%)

Product Description

【3 Ways to Charge】: EBL Power Station 500W supports multiple charging modes, can charge with one compatible 100W solar panels, from AC wall outlet, or from car outlet. With latest fast charging technology, the device can be fully charged in 6-9 hours.

【Multifunctional Charging Ports-Up to 10】: EBL portable solar generator equipped with 3*14V DC outlets, 2 *110V AC outlets, 1*USB-C PD Quick 60W port, 3*Quick charge 3.0 port and 1* Wireless charging for phone. Can power your devices up to 10 at the same time with all popular ports on the market.

【Perfect Real Capacity】: With 500w high capacity, EBL Voyager 500 is ready to power for most home and outdoor needs, such as Electric Grill, Coffee Maker, Frage, Microwave, Electric Stove.

【Portable Size & Foldable】: Nearly 6KG weight can be carried with one hand easily, and also very comfortable for ladies to move. Mucher lighter than other name brand stations. Also with foldable handle, much easier to carry. Meet various needs for camping, traveling, home emergency and so on.

【Contains & Services】: WHAT YOU GET: 1×EBL Voyager 500 Portable Power Station, 1× MC4-7909 Connector Cable, 1×AC 100-240V Wall Plug Power Adapter, 1×12V Car Charger Cable, 1×User Manual. EBL Official offers you 12 months warranty and high-quality customer service.

Product Details
Brand: EBL
Model #: MP500
Warranty: 1 Year
Size: 500W
Color: Black, Orange
Dimensions: 11.5 X 7.95 X 7.64 inches (Length X Width X Height)
Price: $279.99 (Save 30%)
EBL Portable Power Station 500, 110V/500W Solar Generator(Surge 1000W), 519.4Wh Backup Lithium Battery for Outdoor Home Emergency

MARBERO Solar Generator 167Wh Camping Portable Power Station 200W Peak with Foldable Solar Panels 30W with AC Outlet 110V Multi-Port LED Flashlights for CPAP Home Camping Hurricane Emergency


MARBERO Solar Generator 167Wh Camping Portable Power Station 200W Peak with Foldable Solar Panels 30W with AC Outlet 110V Multi-Port LED Flashlights for CPAP Home Camping Hurricane Emergency

$79.86 @ Amazon.com (Save 23%)

Product Description

SOLAR GENERATOR WITH SOLAR PANEL: The combination of MARBERO solar panel 30W and MARBERO power station M168 is ideal for overnight stays outdoors or long periods of time away from home where charging is not possible. The large capacity makes them ideal portable power kits for tent camping, road trip and many other outdoor activities which needs electric power.

MULTI-OUTPUT OF POWER STATION: Lithium backup battery pack is equipped with 167Wh capacity(45,000mAh), 2*USB ports(5V/3A,9V/2A,12V/1.5A QC18W), 1*USB C port(5V/3A,9V/2A,12V/1.5A PD18W), 2*AC ports(110V/60Hz, 100W, peak 200W), 2*DC ports(12-16.8V/10A, Total 150W MAX).

COMPACT AND LIGHTWEIGHT: The power station weighs 3.6lbs while the 30W foldable solar panel is 2.18lbs; The size is also compact for both respectively are 8.3*3.5*7.5inches(power station), 8.3*11.9*1.2inches(folded panel), 25.4*11.9*0.8inches(unfolded panel). Perfect for outdoor activities and home power outages.

3 CHARGING METHODS: The laptop power charger is designed with 3 methods to recharge. On the wall, you can fully charge the solar power bank via AC outlet(adapter included) within 5 hours. And the power bank could be recharged by cigarette 12V outlet. Or it can be charged under the sun with a MARBERO solar panel(15V-24V, 1.2A).

COMPACT&LIGHTWEIGHT: Super small size(5.7*5.6*2.7 inches) and light weight(2.2 lbs). This mini generator with compact handle design is not only for emergency electricity at home, but also for camping or wherever you need power such as extreme weather : hurricane, flood, storm, wild fire

Product Details
Brand: MARBERO
Model #: M168SL30
Warranty: 12 MONTHS WARRANTY: MARBERO solar generator will offer 12 months warranty and 7*24 customer service after your purchase. If you have any problem, please feel free to contact us via Amazon's message.
Color: SOLAR GENERATOR M168 WITH 30W SOLAR
Dimensions: 6.6 X 4.1 X 3.7 inches (Length X Width X Height)
Price: $79.86 (Save 23%)
MARBERO Solar Generator 167Wh Camping Portable Power Station 200W Peak with Foldable Solar Panels 30W with AC Outlet 110V Multi-Port LED Flashlights for CPAP Home Camping Hurricane Emergency

Jackery Portable Power Station Explorer 550, 550 Wh Lithium-ion Battery, 500W Output, Solar Generator for Outdoors Camping Travel (Renewed)


Jackery Portable Power Station Explorer 550, 550 Wh Lithium-ion Battery, 500W Output, Solar Generator for Outdoors Camping Travel (Renewed)

$200.00 @ Amazon.com (Save 20%)

Product Description

500-Watt Output with a 550Wh Capacity: The Explorer 550 is perfect for devices like a laptop, TV, drone, CPAP, rice cooker, etc. You don't have to worry about any devices running out of power.

Better Than A Car Inverter: Running appliances like a car fridge requires the engine to be constantly running. The Explorer 550 can keep your car fridge and other devices running while protecting your car's battery.

RV/Camping/Fishing/Off-Road/Hunting/Getaway/Emergency: With its eco-friendly and quiet features, the Explorer 550 is one of the best investments for your outdoor life. With the touch of a button, the Explorer 550 supplies the power you need, where you need it without harmful fumes, unlike gas generators.

Built-In MPPT Controller: The built-in MPPT module constantly monitors your solar panels' voltage and current output, adding up to 23% more solar recharging efficiency.

6-month Warranty: Every Refurbished product completes a rigorous refurbishment process that includes full functional testing and is backed by a 6-month warranty.

Product Details
Brand: Jackery
Model #: Explorer 550
Color: Orange
Price: $200.00 (Save 20%)
Jackery Portable Power Station Explorer 550, 550 Wh Lithium-ion Battery, 500W Output, Solar Generator for Outdoors Camping Travel (Renewed)

DaranEner Portable Power Station 600W with Solar Panel 80W, 288Wh LiFePO4 Battery Backup w/2 AC Outlets, 1.7H Fast Charging Solar Generator for Camping, RV Travel, Home Emergencies


DaranEner Portable Power Station 600W with Solar Panel 80W, 288Wh LiFePO4 Battery Backup w/2 AC Outlets, 1.7H Fast Charging Solar Generator for Camping, RV Travel, Home Emergencies

$399.99 @ Amazon.com

Product Description

【Portable & Powerful】600W (1200W Surge) Pure Sine Wave, 288Wh Capacity, 8 Output Ports, Weight 8.4 LB, this power station is the perfect companion for your outdoor adventures, camping, RV trips or even home backup power. Suitable for use during hurricanes, snowstorms and severe weather outages, easy to carry, transfer, and daily storage does not take up space

【8-Device Charging Hub】 Charge everything at once: 2×600W AC outlets, 1×120W car charger (ideal for coolers or air pumps), 2×100W USB-C (fast-charge laptops/phones), 2×DC5521 ports, and 1×18W USB-A. Perfect for group camping or multi-device households

【Super Fast Charging】With DaranEner smart fast charging technology, it can quickly charge from 0% to 80% in just 1 hour, 1.7 hours full(max 170W). Or fully charged by car charger or solar panel (max 100W)

【Safe LiFePO4 Power Station】With its LFP battery, it can be charged and discharged over 3,500 times before its capacity drops to 80%. This is equivalent to nearly 10 years of regular use. With advanced BMS protection that monitors voltage, current and temperature to give your LFP batteries years of life

【LED Light Bar & LED Switch Button】With 2 levels of brightness, strobe mode, and SOS mode.Long press for1second to light up (50% brightness), and long press again to switch between 100% brightness, SOS mode, and strobe mode. Short press to turn off the LED light.With LED Display to Display the working status of the power station

Product Details
Brand: DaranEner
Model #: NEOK
Warranty: 2 Year Manufactuer
Dimensions: 10 X 6.6 X 8.22 inches (Length X Width X Height)
Price: $399.99
DaranEner Portable Power Station 600W with Solar Panel 80W, 288Wh LiFePO4 Battery Backup w/2 AC Outlets, 1.7H Fast Charging Solar Generator for Camping, RV Travel, Home Emergencies

Please share this:

Facebook         Twitter         Linkedin         Pinterest        

Leave a Reply

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