What are the best solar charger usb 3.0 currently available to purchase? This article attempts to give you some answers to guide you in the process of purchasing the best solar charger usb 3.0 to suit your needs. In our buying guide, we outline certain features to consider when buying solar charger usb 3.0. It is important to take time and research before you commit to purchasing.

Best solar charger usb 3.0

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Best solar charger usb 3.0 reviews

1. RAVPower Solar Charger 24W Solar Panel with 3 USB Ports Waterproof Foldable Camping Travel Charger Compatible iPhone Xs XS Max XR X 8 7 Plus, iPad, Galaxy S9 S8 Note 8 and More, Black

Feature

Signature Solar Cells: Our 24W SUNPOWER solar charging technology increases the efficiency of charging by up to 21.5% - 23.5%
Easy To Carry: Half the weight of similar solar chargers but equal in power so you can bring it anywhere
Exclusive iSmart Technology: All three USB ports are equipped with iSmart technology, which automatically detects and delivers the optimal charging current for connected devices; up to 2.4A per port or 4.8A overall when used under direct sunlight
Triple Port Power: Smart IC frequency technology detects and evenly distributes output current to all three USB ports ensuring every device is evenly charged
Weather Wear: Constructed with a durable and waterproof nylon and equipped with four hooks to hang anywhere; packaged with two micro-USB cables for added convenience

Description

Give a kiss goodbye to power sockets and embrace the power of the sun. The RAVPower RP-PC005 is a solar powered portable charger that utilizes the sun's rays to charge your smartphones and tablets.

Constructed with our premium SUNPOWER solar charging cells that have an increased charging efficiency of 21.5% - 23.5%, you can power your portable devices from sunrise to sundown whenever you are outside.

Light and Portable
Chunky and cumbersome solar chargers are a hassle to carry, set up, and use. For something much easier, this 26.4 oz (754g) solar charger is half the size of similar chargers yet capable of generating just as much energy without the extra baggage.

Charge Smarter
iSmart technology automatically detects and delivers the optimal charging current for any connected device, ensuring the fastest and most efficient charge. When under direct sunlight, all three ports are individually capable of reaching 2.4A; with a total of 4.8A being reached when all three devices are simultaneously charging.

Power for All
Having an option for more than one USB port can result in an uneven distribution of power where one device charges faster than the other. With our built-in Smart IC chip, the flow of energy is regulated resulting in every device charging at an even and constant rate.

Hang It High or Lay It Low
Whether you're placing it on the ground, stretching it across a tree, or hanging it off your backpack via the four stainless steel hooks, as long as it's directly under the sun, your devices will charge. When outside and the elements suddenly turn on you, the waterproof nylon covering protects the solar panels while the pouch ensures your devices stay dry.

What's In the Box:
1 x RAVPower 24W Triple-Port Outdoor Solar Charger
4 x Stainless Steel Hooks
2 x Micro USB Cables

2. Solar Charger, 25000mAh Battery Solar Power Bank Portable Panel Charger with 36 LEDs and 3 USB Output Ports External Backup Battery for Camping Outdoor for iOS Android

Feature

25000mAh Ultra High Capacity Solar ChargerThe solar panel charger built-in 25000mAh Li-polymer battery, it's enough to charge an iPhone XS for 7.4 times, a Galaxy S9 Plus for 5.7 times, an iPad Pro for 1.6 times!
Two Charging MethodsThe Solar charger power by Adapter or Solar. The blue indicator light is on when charging with the adapter, and the green indicator light is on when charging with solar panel.
3-USB Ports for ChargerThe solar charging powerbank has three USB ports that can charge three devices at the same time, which is convenient for yourself and your friends.
ABS Material with 36 LEDsThe USB power bank used ABS environmentally friendly material, stylish and decent. Built-in 36 LED lights with powerful lighting function,this Solar phone charger is the best choice for outdoor enthusiasts.
ONE-YEAR WARRANTY for Solar Power BankWe've got you covered by our One-Year warranty if anything goes wrong, our fast, friendly and hassle-free customer service team is here for you.

Description


Still worrying about the phone being out of power? Power bank capacity is too small? Is it inconvenient to carry?
The ES-982 solar power bank supply meets all your needs. Today, the power bank has become a must-have for people to go out. Our product can be charged by DC5V and solar energy, especially for users who enjoy outdoor sports or travel. And there are three USB ports that can charge three devices at the same time, both for yourself and your friends. In addition, 36 LED high-illumination lights make it easy to deal with power outages or nights.
It is a nice gift for outdoor or travel enthusiasts.

Specification:
Capacity: 25000 mAh
Battery: Lithium Polymer
Input: DC5V/2A
Output 1: DC5V/1A
Output 2: DC5V/2A
Output 3: DC5V/2A
Shell material: ABS
Product size: 7*3.8*1.1in
Product net weight: 19oz

Package:
1* Solar Power Bank
1* Carabiner
1* Manual
1* USB Cable

3. Solar Charger 26800mAh, ORYTO Qi Wireless Portable Solar Power Bank External Backup Battery, 3 Outputs-5V/3.1A & 2 Inputs Huge Capacity Phone Charger for Smartphones, 18LED Flashlights for Outdoor

Feature

Wireless Solar Charger26,800mAh solar charger is especially for outdoor enthusiasts,provides large battery backup for usage during outdoor activities.More than portable solar power bank but qi portable charger as well compatible with iPhone XR/ XR MAX/ XS/ X/ 8/ 8plus, Samsung Galaxy S9/S9plus S8/S8plus and all qi-enabled devices. Truly cable-free and tangle-free.
Upgrade 26800mAh Power BankHuge Capacity Power Bank With 26800mAh capacity, automatically adjust the output to deliver the most suitable current, keep your devices from overcharging, over-current, over-voltage and short circuit. A must for outdoor activities, don't need worry if your mobile device is out of power even in the hurricane days.
Type-c & Dual USB 3.1A OutputThe solar charger with wireless function can charge 4 devices simultaneously with 3.1A high-speed charging, which can charge your phone for 10+ times. Auto-detect your devices' current to pair the optimal output.
Designed for OutdoorsRugged construction is dustproof, shockproof and waterproof,built-in 18 LED flashlights with Strong/Weak lights-Flash-SOS mode, awesome for outside activities such as camping, hiking, traveling and other emergency use.
Package List 26,800mAh Wireless Power Bank, a micro USB cable, a Carabiner, User Manual.

Description

ORYTO 26800mAh Portable Power Bank Solar Charger

Has Three 3.1A Outputs & Dual 2A Inputs Fast Charging.

QI Wireless Charging Function & 18LED Flashlights can be used as a torch which is suitable for EMERGENCY Outdoor Camping Travel.


Specification:

Battery capacity: 26800mAh

Battery type: polymer lithium ion battery

Solar panel specification: 5.9*2.8in (300mA) material: ABS+TPU

charging time: 13h

Product Dimensions: 6.9*3.7*1.1in

Product Weight: 545g

Operation temperature: -10~+60

Flashlight: 3W(198 lumens)

Wireless charging power: 5W (5V/1A)

Receiving distance: 10MM

Working frequency: 110-250KHz

Power conversion: 72%


Package List:

1 x 26800mAh Solar Charger

1 x Micro USB Charging Cable

1 x Lanyard

1 x User Manual


Kind note:

1. Three UBS ports Fast charging(5V 3.1A) charges the power bank much faster than Smartphone adapter(5V 3A).

2. Take AC charging as daily power sources, please. The energy transformation from solar to electricity is rather slow and the solar charging speed is subject to sunlight intensity and panel conversion rate. It takes 6-8 hours to solar charging 5-10% of the battery, which is designed to make emergency phone calls for outdoor activities.

3. For safety, DO NOT leave the power bank charging in car in case of high temperature and avoid crashing. Do not make charge while charging itself.

4. DC5V/1Ais not enough to input this power bank normally, it will be more than 3 times slower. Therefore, it is required to useDC5V/2Aadapter.

4. Solar Charger 26800mAh, Solar Power Bank, Portable Charger Battery Pack with 3 Outputs & 2 Inputs(Micro USB Type-C) Huge Capacity Backup Battery Compatible Smartphone, Tablet and More

Feature

HIGH CAPACITY SOLAR POWER CHARGERNEWEST 26,800mAh power bank especially for outdoor enthusiasts. Itself can be fully recharged around 6hours with 5V/2A adapter, It can charge iphone7 up to 13times,Galaxy S10 up to 8.5times, Huawei P30 Pro up to 6times,Ipad Air2 up to 3times. Best choice for resources of emergency power. Truly cable-free and tangle-free.
FRIENDLY REMINDERS ON SOLAR POWERThe solar power bank itself can be charged via power outlet(micro usb and type C input port) and sunlight. Yet its recommended to take the solar charging feature as the emergency back-up solution instead of main power sources. It's difficult to produce intensive power via sunlight due to sunlight intensity and panel conversion rate.
Super bright Led Emergency Flashlight18 LED light on the back side of the power bank, great illumination. (Long press the power button to turn the light on) Great choice for camping Hiking and other outdoor activities, light up your outdoor life.
STURDY DURABLE AND STREAMLINED APPEARANCEThe solar power bank is made of premium ABS fireproof materials and premium lithium polymer battery, highly sturdy and durable. IPX6 Waterproof, Dustproof, Shockproof. Its equipped with MICRO and type C inports, three outports(3.1A). Light weight and Streamlined appearance. NOTE: The output ports has a smart bc1.2 fast charging protocol, for example, it can quickly charge the iPhone 8 or higher version of the mobile phone 2A.
AONIDI QUALITY & BRAND DECLARATIONAONIDI offers 100%money-back and timely & considerate customer services, eliminating all your worries about getting the solar power bank. PLEASE NOTE: AONIDI is the exclusive seller and manufacturer of the solar power bank. Be careful about other counterfeits and we are not responsible for products sold by other sellers. Please make sure you buy it only from AONIDI.

Description

26800mAh Fast Charging Portable Power Bank Solar Charger

Three 3.1A Outputs & Dual 2A Inputs Compatible for all smart phones


Specification:

Battery type: Rechargeable Li-polymer battery

Battery Capacity: 26800mAh

Solar panel specification: 150.8*71.3mm(300mA) material: ABS+TPU

charging time: 13h

Product Dimensions: 176*95*29mm

Product Weight: 564g

Operation temperature: -5~+50

Flashlight: 3W(198 lumens)


Package List:

1 x 26800mAh Solar Charger

1 x Micro USB Charging Cable

1 x Lanyard

1 x User Manual


Warning Tips:

1. BC1.2 fast charging(5V 3.1A) charges the power bank much faster than iPhone adapter(5V 3A).

2. Take AC charging as daily power sources please. The energy transformation from solar to electricity is rather slow and the solar charging speed is subject to sunlight intensity and panel conversion rate. It takes 6-8 hours to solar charging 5-10% of the battery, which is designed to make emergency phone calls for outdoor activities.

3. For your safety, please don't leave the power bank in your car,or expose it to intensive sunlight for too long.

4. The power bank is IPX6 rainproof but not totally waterproof,please don't use it underwater or wash it with water.

5.Keep the solar power bank out of the reach of children and avoid inappropriate use by children.

5. BigBlue 3 USB Ports 28W Solar Charger, 5V Foldable Waterproof Outdoor Solar Battery Charger With SunPower Solar Panel Compatible with iPhone X/8/7/6s, Samsung Galaxy LG etc.

Feature

Clean Energy Power: Foldable Solar Charger Panel Bag--For Camping, Hiking, Climbing or Any Outdoor Activities, With A 21.5-23.5% Solar Efficient.
Wide Compatibility: Attached Micro Usb Cable For Almost All Android Devices & Some DSLRs. Or Apple Devices (Needs Extra Apple'S Cable)
Easy & Compact Power: Two 2.4 Amps Ports & One 1 Amp Port Under Direct Sunlight.Automatically Adjust Current and Auto-Restart Function,No Need to Connect Again When Passing Under Shadow or Cloudy Days.
Ipx-4 Waterproof Level: Special Pet Polymer Surface Protects it From Occasional Rain Or Wet Fog. Light Weight & Foldable Size Make it Easy to Carry, Stash in Your Bag.
Package & Warranty: Bigblue Package, Industrial-Strength Pet Polymer Fabric,24-Month Warranty And Friendly & Customer Service.

6. Solar Charger 26800mAh Hiluckey 18W Power Bank with 3.0A Outputs USB C Waterproof Battery Pack for Smartphones, Tablets, MacBook

Feature

26800mAh Gigantic Capacity: It can charge your phones 10-12 times or tablets 4-5 times for an average of 9 days of usage per charge. Please note the solar charging function is only used for emergency because it has only one panel.
Fast Charging: With 18W power delivery and QC3.0 tech, it can quick charge a 3000mAh phone around 1.5 hrs or a 6000mAh laptop around 2.5 hrs.
PD&QC Tech: The blue USB port and USB C port can work with a 12V laptop. And use a PD or QC adapter to fully charge the power bank within 8 hrs via USB-C port. (USB C port can work as input and output)
Outdoor Use: Built in LED flashlight with SOS mode which can be used as an emergency light in dark, easily lighting up an entire room or focus in on objects up to 33 feet. Waterproof, dustproof and shock design is ideal for outdoor use.
Important Note: Our brand is "Hiluckey", please make sure that the products you purchase are from "Hiluckey". If someone sells our products at a low price, that must be fake and we are not responsible for the products sold by them. Please do not buy their products (They won't send any product to you)

Description

Why Choose Us
1. Hiluckey solar charger with 26800 colossal capacity can charge your phone for multiple times.
2. Its max charging power which can support for your devices is 5V /3.0A(Max); 9V / 2.0A(Max); 12V / 1.5A(Max), you can quick charge your devices.
3. Built in LED flashlight with SOS mode. Waterproof, dustproof and shock design is ideal for outdoor use.
4. We provide our customers with 18 month warranty. Any issue arises, please contact me at our official mailbox that is used for dealing with after-sales problem, and we will do our best to solve your problem.

Product Specification
Solar panel:5.5V / 1.9W
Output USB port: 5V / 3.0A (Max)
PD& QC output port (blue): 5V / 3.0A(Max); 9V / 2.0A(Max);12V / 1.5A(Max)
USB C port: Output: 5V /3.0A(Max); 9V / 2.0A(Max); 12V / 1.5A(Max) Input: 5V /2.3A(Max); 9V / 2.0A(Max)
Micro USB Input port5V /2.3A(Max); 9V / 2.0A(Max)
LED flashlight
Capacity indicator lights (blue)
Solar indicator light (green)
On / Off button
Hanging ring

7. RAVPower Solar Charger 24W Solar Panel with 3 USB Ports Waterproof Foldable Camping Travel Charger Compatible iPhone X 8 7 6 Plus, iPad Pro Air Mini, Galaxy S9 S8 Note 8, Nexus, LG, HTC and More

Feature

Signature Solar Cells: Our 24W solar charging technology increases the efficiency of charging by up to 21.5% - 23.5%
Easy To Carry: Half the weight of similar solar chargers but equal in power so you can bring it anywhere
Exclusive iSmart Technology: All three USB ports are equipped with iSmart technology, which automatically detects and delivers the optimal charging current for connected devices; up to 2.4A per port or 4.8A overall when used under direct sunlight
Triple Port Power: Smart IC frequency technology detects and evenly distributes output current to all three USB ports ensuring every device is evenly charged
Important Note: Please DO NOT lay the solar panel directly on CONCRETE, SAND, ROCK or other high heat conduction surfaces in direct sunlight - this will cause the solar panel to overheat and significantly reduce the conversion rate and output wattage

Description

Important Note:
1. Please DO place the solar panel in direct sunlight to get the most efficient energy converation.
2. Please DO NOT place solar panels behind windows. This may significantly reduced energy converation.
3. Please DO NOT lay the solar panel directly on CONCRETE FLOOR, SAND OR other easy-heat-conduction place when charging. Doing so will overheat the solar panel. This may significantly reduced the conversion rate to prevent.

Give a kiss goodbye to power sockets and embrace the power of the sun. The RAVPower 24W solar panel is a solar powered portable charger that utilizes the sun's rays to charge your smartphones and tablets.
Constructed with our premium solar charging cells that have an increased charging efficiency of 21.5% - 23.5%, you can power your portable devices from sunrise to sundown whenever you are outside.

Light and Portable
Chunky and cumbersome solar chargers are a hassle to carry, set up, and use. For something much easier, this 26.4 oz (754g) solar charger is half the size of similar chargers yet capable of generating just as much energy without the extra baggage.

Charge Smarter
iSmart technology automatically detects and delivers the optimal charging current for any connected device, ensuring the fastest and most efficient charge. When under direct sunlight, all three ports are individually capable of reaching 2.4A; with a total of 4.8A being reached when all three devices are simultaneously charging.

Power for All
Having an option for more than one USB port can result in an uneven distribution of power where one device charges faster than the other. With our built-in Smart IC chip, the flow of energy is regulated resulting in every device charging at an even and constant rate.

What's In the Box:
1 x RAVPower 24W Solar Charger
4 x Stainless Steel Hooks
2 x Micro USB Cables

8. Feelle Solar Charger 24000mAh, Solar Power Bank with 3 Solar Panels Portable Phone Chargers for Smart Phones, Tablets and More

Feature

24000mAh Capacity : Built in A-grade Li-Polymer battery, it can charge an iPhone 6s for 10 times, iPhone 7 for 9 times, Samsung S7 for 5.5 times, ipad Air for 3 times.
Solar Power : with 3 highly efficiency solar panels, which could recharge itself expeditiously under the sun, which is 3 - 4 times faster than the other solar chargers.
2.1A Dual USB: Controlled by intelligent IC, it matches various phones. It can quickly charge your phone and tablet. Most phones can be fully charged around 1- 1.5h, tablet is about 2 - 2.8 hours.
Outdoor Necessity: With built-in super bright LED emergency lights and waterproof, dust and shock construction, It can last for more than 5 years, meeting the various electricity needs of outdoor travel.
100% Warranty: 12 months warranty for refund or replacement. Feel free to contact us if you have any question, we will reply you in 24 hours.

Description

Feelle 24000mAh solar charger with plenty of power to meet your a week charge for your phone, and it can be packed in your luggage and use it on the airplane. It's an useful gift item to those who are fond of outdoor activities like camping and hiking.

Solar Charger with 3 Solar Panels
This solar charger with 3 solar panels can be recharged via sunlight for emergency purpose. Don't need worry about out of power at outdoor.

2 USB Quick Charging
Dual USB ports are enabled to charge 2 devices at the same time. With 2.1A high speed charging output, saving at least 50% on the recharge time compared to using 1A adapters.

Thoughtful and Durable Design
Good design is just as important as function. the 24000mAh power bank made of durable ABS+PC material and features a waterproof PU-leather cover, sturdy waterproof charger can be used for long time.

3 LED Light Modes for Emergency
Press the ON/OFF button you can get 3 light modes(steady LED light - SOS flashing light - SOS fast flashing light), very suitable for emergency.

Charge Faster, Charge Safer
Built-in intelligent protection system automatically detects and delivers the optimal charging current to fast charge your devices. And automatically shut down after full charged to avoid unnecessary damage.

Specification:
Capacity:24000mAh
Solar panel:5V/3.75W
Battery: Li-polymer battery
Input: 5V/1.8A
2 Output: 5V/2.1A
Solar panels3 foldable solar panels
Application: iPhone Samsung Android Smartphone Gopro Camera GPS ipad Tablets and etc.

For Optimal Use:
1. Due to the limitation of the size of solar panels and weather, the charging efficiency will be influenced, ordinarily recommend to charge by outlet, which is more fast to get full charged.
2. Putting the solar panel faces the sun directly, which make the solar charger absorbing solar energy better.

9. AMAES Solar Charger 20000mAh, Portable Phone Charger External Battery Pack, Compatible with iPhone Samsung Tablets & More, Type-C and Micro USB Inputs, 3 Outputs, Flashlight, Carabiner, IP54 Rainproof

Feature

20000mAh High CapacityBuilt in Eco-friendly 20000mAh Li-Polymer battery, work with all iPhone/iPad/Tablets, other cell phones and electronic devices. No worry about power off in Hurricane Days. Automatically adjust the output power to deliver the optimal charging current keep your devices from overcharging, over-current, over-voltage and short circuit. Ideal choice for hiking, camping trips or other outdoor activities.
Solar Charging & Dual Input PortsThis portable charger has two high speed input ports: Micro USB port(5V/2A) and type-C port(5V/3A) which support to full charge itself in about 10 hours. Support Solar energy technology which could recharge itself under sunshine. Note: Solar charging is for emergency use, not primary charging source. It is highly recommend you fully charge via wall charger upon first use.
3 Output Ports ChargingBuilt-in dual 5V/2.4A(Max) USB output ports and a 5V/3A type-C output port, allow you to safe charge 3 electronic devices with high speed charging simultaneously, provide you with more charging options and fast charging needs than most other similar power banks, sharing the juice with your family and friends.
Design for OutdoorsThe outer case is made from durable ABS material better protect battery from rain, dust, crashes or drops. Moreover, the built-in super LED emergency light can be used as a torch or emergency lighting in darkness. "Steady-Lighting-SOS" 3 modes is designed for outdoor enthusiasts.
Portable What Your Will Get You will get 1*Solar charger, 1*Charging cable, 1*User Manual. With the compact size, you may take it with yourself for traveling, hiking, camping, long road trips as the emergency back-up solution.Timely & considerate customer services, any suggestion or complaint during uses, just contact us directly for solution.

Description

20000 mAh High Capacity Power Bank

Free Yourself From The Chains Of Electricity & Enjoy Your Adventures!

Product Highlights:

* 20000mAh high-capacity, no worry about power off in hurricane days
* 3 charging ports allow charge 3 devices simultaneously
* Compatible with iPhone, Samsung, Android phones, windows phones, GoPro camera, GPS, tablets and most USB charging devices.
* Rainproof, dust-proof and shock-proof
* Super compact size, most lightweight charge, perfect for jogging hiking and traveling
* Extra charging cable and carabiner, with the mini flashlight function, It's time to go for camping!

Specifications:

Battery Capacity: 20000mAh Li-polymer battery
Input:
Type-C: 5V/3A
Micro: 5V/2A
Output:
Type-C: 5V/3A
DC: 5V/2.4A(Max)
Full charging time: About 10 hours
Size: 155 * 82 * 22mm
Weigh: 458g

Package List:

- 1 * 20000mAh Solar Charger
- 1 * Micro USB Charging Cable
- 1 * Carabiner
- 1 * User Manual

Notes:

1. QC 3.0 wall charger(5V 3A) charges the power bank much faster than iPhone adapter(5V 1A).
2. Take AC charging as daily power sources please. The energy transformation from solar to electricity is rather slow and the solar charging speed is subject to sunlight intensity and panel conversion rate, which is designed to make emergency phone calls for outdoor activities.
3. For your safety, please don't leave the power bank in your car,or expose it to intensive sunlight for too long.
4. The power bank is IP 54 rainproof but not totally waterproof,please don't use it underwater or wash it with water.
5. Keep the solar power bank out of the reach of children and avoid inappropriate use by children.

10. Solar Charger, 20000mAh Qi Wireless Power Bank, Wireless Portable Charger with 3 Outputs High-Speed 5V/3A & 4 LED Flashlight Camping Outdoor IP54 Rainproof Quick Charge for iPhone Android

Feature

20000mAh Large Capacity Solar ChargerLarge capacity battery with solar charging board, It can charge iphone X up to 5 times,Samsung Galaxy S8 up to 3.5 times, mini ipads up 2 times. Awesome for outside activities such as camping, hiking, and other emergency use.
Qi Wireless & 3 Output PortsThe Qi portable solar charger compatibles with iPhone 11/Samsung Galaxy S10 and all Qi-enabled devices. Built-in 2 USB output and 1 Type-C output, allowing you charge 4 devices at a time! Note: Only Qi-enabled devices are eligible for wirelss charging tech.
Cable and Solar ChargingDual input port (high-speed Type-C and Micro USB) enables to fully charge itself around 6-8 hours. The solar panel could absorb light and transfer into electricity. Note: Solar charging is slower, mainly used for emergency situations. For normal use, please use the cable to charge the power bank.
Portable and SturdyThe out the case are made of durable ABS material, with IP54 waterproof and dust-proof, Sturdy and not easily damaged; Equipped with slings and carabiner, meeting the needs of outdoor travel.
Multiple lighting modesBuilt-in bright LED lights, Three modes light works as a flashlight, SOS light, and Strobe; We have support team that ready to help you, Email reply within 12 hours, 45 days money back

Description

Notes

1.The full charging time is only for your reference,please refer to actual operation.
2.High quality guarantee,using A-grade Li-polymer battery cell for this power bank,please be assured use.
3.Please using the matched charging cable according to your mobile phone and digital product.
4.It will cause slight heating due to electric consumption when charging and discharging,it's normal phenomenon.
5.Please store this power bank in a cool and dry place,if do not use for a long period,please fully charged this power bank at every 6 months interval.
6.Please find our suggestion to choosing regular 5V-2A charger to charge this solar charger,in order to ensure the stability of this product usage.
7.Please do not put together this power bank with metal or tool items, in order to avoid scratching surface or damage.
8.Don't leave this item out in your car to charge.Car's dashboard will become very hot from the sun and would ruining the internal battery.

WARNING

DO NOT attempt to open or dismantle the product.
DO NOT subject the power bank to naked flames or extreme heat.
DO NOT stand on or otherwise apply pressure to the power bank.
DO NOT allow children to play with the power bank.
Whilst the device will charge in high temperatures please ensure the device never sits in direct sunlight for a prolonged period of time as the charger has a maximum temperature of 45C(113F).
Stop using this power bank if it occur expansion or break down, and contact local distributor.
Unless supervision and guided by professional man,and ensure safety of user,the following person are not suitable to use this power bank:people who degeneration on physical function or mental ability, people who lack of operating experience and lack of acknowledge of this power bank.

Conclusion

All above are our suggestions for solar charger usb 3.0. This might not suit you, so we prefer that you read all detail information also customer reviews to choose yours. Please also help to share your experience when using solar charger usb 3.0 with us by comment in this post. Thank you!
Elsie Butler