How to Charge a Solar Power Bank

Article By: Faheem Hussain Published On: November 8, 2023 , Last updated on : November 9, 2023 | Reviewed by : Editorial Board
How to charge a solar power bank

A solar power bank can save your day if you are on a hiking trip or in a remote location where electricity is scarce. But to keep your devices running, the power bank itself has to be charged from time to time. There are multiple ways to juice up your power bank. Here, we will explore how to charge a solar power bank regardless of the situation.

How to charge a solar power bank | Best 4 ways

If you have a solar power bank, whether it is a small form factor power bank or a portable powerhouse, charging it up can become a hefty task. Thankfully, most solar power banks come with a built-in solar panel to charge it. Alongside, you can also use direct charging with power adapters, external solar panels, or alternative power sources. Here, we will provide some in-depth instructions about charging a solar power bank in any situation.

How to charge a solar power bank using electricity

Whether you live in a perfectly fine environment or in some place where direct sunlight is not very available, using a power adapter through a wall outlet is always the best and quickest way to charge a solar power bank. Using charging stations or high-wattage power adapters, you can easily charge a solar power bank without sunlight or any kind of external power source. You just have to make sure you have the right power brick and cables with compatible wattage.

Steps to charge a solar power bank using a wall charger

  • Plug in your USB wall charger to a wall outlet.
  • Then, connect the power bank to the charger. The indicators on the power bank should light up to let you know it’s charging.
  • Depending on the power bank’s battery and your charger wattage, charging time may vary. Keep an eye on the indicator lights and unplug the power bank when it’s fully charged.

How to charge a solar power bank in the sun

Solar power banks come with pre-installed mini solar panel units. So charging them up is easy if you are in a sunny place. Due to the panels’ usual size factor, it may take longer to charge compared to wall power adapters or external solar panels. But in most cases, the built-in panels work perfectly when placed under direct sunlight.

Also read: Best Solar Power Banks for iPhone

Steps to charge a solar power bank in the sun

How to charge solar power bank in the sun

  • Firstly, disconnect the power bank from any charging devices.
  • Next, uncover the solar panel of the power bank if it comes with any cover.
  • Then, place the unit under direct sunlight and make sure the charging indicator lights up.
  • Finally, keep the device temperature in check and remove it from sunlight after fully charged.

Charging a solar power bank with portable solar panels

It’s easy to carry around portable solar panels, and you can quickly set them up. Due to high-efficiency monocrystalline technology, some of these panels are flexible too. So, uneven surfaces like yachts, car roofs, or difficult terrain areas in hiking tracks or camps won’t be an issue. In essence, using portable solar panels allows you to charge your solar power banks more quickly than the built-in panel.

Also, when you are tracking, hiking, or on the move, you can easily charge your solar power bank with your backpack too. For that, you can pick from some of the best backpacking chargers that come with a built-in powerful solar panel. By connecting your solar power banks with the output ports, you can seamlessly charge up your power banks and stay on the move.

Steps to use external portable solar panels to charge a solar power bank

Steps to use external portable solar panels to charge a solar power bank

  • Unfold the solar panel and place it in a sunny place under direct sunlight.
  • Next, connect the power bank to the power terminal from the solar panel.
  • Then, place the power bank under a shaded place to avoid heating up from sunlight.
  • Finally, check the power bank charging state after some time. Unplug the panel when fully charged.

Note: Due to sunlight, power banks can heat up quickly. Let the power bank cool down for some time before charging it up.

Best portable solar panels

Keshoyal Foldable Solar Panel

01 Keshoyal Foldable Solar Panel

Peak power: 60W

Weight: 4 lbs


  • High energy conversion efficiency (Up to 23.5%)
  • Easy to carry around
  • High current protection system
  • Built with corrosion and temperature resistive material


  • Slow charging speed

View on Amazon

JJN Portable Foldable Solar Panel

02 JJN Portable Foldable Solar Panel

Peak power: 100W

Weight: 8.8 lbs


  • USB A and Type-C ports for direct solar smart charging
  • IP65 water resistant
  • Multiple DC ports for connecting a wide variety of devices
  • Parallel cable connection for multi-unit operation


  • Requires direct and heavy sunlight

View on Amazon

BigBlue Solar Panel Charger

03 BigBlue Solar Panels

Peak power: 36W

Weight: 3.64 lbs


  • Very lightweight
  • Optimized circuit and current flow protection system
  • Charge multiple devices at once
  • A variety of ports and charging cables included


  • Low power output compared to others

View on Amazon

Renogy Solar Panel

04 Renogy Solar Panel

Peak power: 100W

Weight: 5.3 lbs


  • Flexible and easier to place on any surface
  • Bendable up to 240 degrees
  • PERC technology for high-efficiency
  • Extreme weather endurance


  • A bit pricey

View on Amazon

HQST Flexible Monocrystalline Solar Panel

05 HQST Flexible Monocrystalline Solar Panel

Peak power: 100W

Weight: 5.3 lbs


  • 9 Bus bar solar cells
  • Pre-drilled mounting holes for convenient placement
  • IP67-rated water and dustproof
  • Ultra-thin and flexible


  • Power output efficiency could be better

View on Amazon

How to charge a solar power bank with an alternate power source

If you are going camping or hiking where setting up solar panels will be difficult, you can use some alternative power sources. For places where sunlight is obstructed by heavy clouds or foliage deep inside a forest, it will be difficult to charge a power bank. Also, during blizzards or in winter, sunlight becomes very low. To deal with power outages in such cases, you can utilize air, water, or heat to charge up your solar power bank.

For instance, if you need to charge heavy power banks, you can use a 500W water turbine generator if there is a running water source near your campsite. By putting it in a flowing water bank, it will generate adequate power to charge your devices. Also, you can use the BioLite CampStove, which uses fire as an energy source to charge up a power bank. It comes with a specific compartment to burn and generate power. Therefore, it acts as a stove and power bank charging station at a time.

Best alternative power sources for charging a solar power bank

SABUIDDS Water Turbine Generator (Water-based)

06 SABUIDDS Water Turbine Generator (500W)

Wattage: 500W

Voltage: 110V

Often, there might be a situation where sunlight does not have enough intensity to provide power from solar cells. How to charge a solar charger or power bank in such a situation? This Sabuidds water turbine generator comes to save the day in such times.

If your campsite or place has a flowing waterbody nearby, you can easily utilize this to generate enough electricity to charge up your power banks. It can generate up to 500W, which is more than enough to charge most modern-day portable power banks.


  • Robust build quality
  • Large power generation capability
  • Easy to set up
  • Requires no additional charge controller


  • Requires high water flow for operation

View on Amazon

Yosoo DC Water Turbine Generator (Compact)

07 Yosoo DC Water Turbine Generator (10W)

Wattage: 10W

Voltage: 12V

The Yosoo DC water turbine is an extremely portable water generator that can generate power from any small water flow. It can produce up to 10W energy that can provide your solar power bank with a 12V constant charging flow. The device is very lightweight and easy to set up.

The water turbine requires 60-70 psi of water pressure to generate. So, you can use it with your faucet in your house. By simply turning on the faucet, you can charge up your solar power bank without any sunlight.


  • Ultra-portable
  • Requires very little water flow
  • Easy to use
  • Very low mechanical noise


  • Low power generation capability

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BioLite CampStove 2+ (Thermal power converter)

08 BioLite CampStove 2+

Wattage: 3W (USB)

Built-in battery: 3200mAh

Whether it’s a zombie apocalypse or a snow blizzard, the BioLite CampStove 2+ will be amazingly useful to you. It generates power from burning wood or anything in its chamber and stores them in a 3200mAh battery. The most exclusive convenience is that you can use anything to generate heat on it and use it for cooking and charging up your power bank.

It comes with a built-in battery to store power for later usage. This intelligent design keeps your sensitive devices safe from heat damage. Furthermore, the design is sturdy and well-engineered to ensure high efficiency and output level in harsh environments or critical situations.


  • Easy to operate
  • Small form factor
  • Highly effective and efficient compared to other sources
  • Lightweight and portable


  • Low output wattage

View on Amazon

Nature’s Generator Gold WE System (Solar Panel & Wind Turbine)

09 Nature’s Generator Gold WE System

Wattage: 1800W

Voltage: 120V

For emergency situations or severe power outages, Nature’s Generator Gold WE system provides the ultimate solution for power backup. It comes with a completely renewable energy system with a 60Ah SLA battery, 100W solar panel, and 150W wind turbine. So, you can easily provide power to your power banks or devices seamlessly in any situation.


  • Complete renewable power generation set
  • Portable and easy to set up
  • Efficient built-in battery
  • Convenient power control panel


  • Bulky device compared to others

View on Amazon

How long does it take to charge a solar power bank?

The duration of charging up a solar power bank totally depends on the intensity of sunlight, placement of the solar panel, and size of the panel. But on average, a moderately sized 50W solar panel will be able to fully charge a 5000mAh power bank in about 2 to 3 hours. This time can increase or decrease based on the cloud presence and sunlight intensity.


We have tried to provide deep insights into ways how to charge a solar power bank in different situations. We hope our findings will be helpful for you in choosing the right option. Furthermore, you can check out some of the best MagSafe battery packs or power banks for MacBook Pro.