The 5 Best Solar Powered Calculators

Written By: | Last Updated On: October 20, 2022
best solar powered calculator

It is very important to choose the best solar powered calculators for your needs.

Solar power has many benefits, but it’s not always an option for you.

That’s why we’re here to help! We’ve reviewed and ranked the top 5 solar powered calculators based on their features and functionality so that you can find one that suits your needs. 

1. Helect Standard Function Solar Desk Calculator

Helect Calculator, Standard Function Desktop solar Calculator, Black

The first item on today’s list of the best solar powered calculators is the Helect Standard Function Calculator.

One of the things that I really like about this calculator is its compact size. It’s only 4.8 x 5.75 x 2.01 inches, which makes it a perfect fit for small desks with limited space.

Further, this calculator can do more than just basic math, it can do taxes, convert currencies, calculate profit margins, and many more. This solar calculator really has it all.

The buttons are very nice to press, and look good.

For the display, this calculator comes equipped with a 12-digit display and very nice to press buttons, which make it much easier to work with numbers.

With this calculator, you will never have to worry about running out of charge. This is because the Helect standard calculator features a high quality solar panel that will use sunlight and convert it to electricity to keep your batteries topped up all year long.

What we like

  • Good Value for a basic four function desk calculator
  • No glare from the overhead lights
  • Big and responsive buttons
  • Big display and the buttons are easy to press
  • High quality solar panel

 2. Casio MS-80B Standard Function Solar Powered Calculator

Casio MS-80B Standard Function Desktop Calculator,Black

The Casio MS-80B calculator is ideal for the modern businessman or woman who needs to do complex calculations fairly quickly. 

From a quality perspective, it can easily outperform some of the high-end financial calculators in the market and it fits very well in a drawer or briefcase.

Buttons work flawlessly without sticking or not registering at all.

It has a large 8 digit, anti-glare display making the numbers very easy to read even in the brightest rooms.

Additionally, this calculator includes profit margin percentage, memory keys, and +/- key rollover, as well as tax and currency conversion, basic functions, and command signs.

In terms of power, the Casio MS-80B can be powered by a battery or the solar panel.

What we like

  • It can comfortably replace many pricer calculators
  • User friendly interface
  • Extremely portable and compact
  • Very clear antiglare display
  • Dual powered

3. Sharp Electronics 8-Digit Twin Powered Calculator

Sharp Electronics 8-Digit Twin Powered Calculator (EL-243S/EL-243SB)

Sharp is really conquering the market with their digital pocket calculator.

This calculator is the right choice for your everyday math needs and it’s 4.25 x 2.5 x 0.7 inches making it very handy to take it everywhere.

It automatically switches from solar to battery power in low light conditions so you will never run out of power guaranteeing uninterrupted functioning and a consistently bright, clear display.

The Sharp solar calculator is designed with an extra-large LCD display so you can easily see all of your calculations and an attached hardcover which is made of durable plastic components to save it from breaking.

Moreover, it contains 3-key memory including memory plus, memory minus, recall/clear memory keys, percent, square root keys, and sign change keys.

What we like

  • Very small in size, making it perfect to carry on the go in a purse or even pocket.
  • Easy to press keys and can to years for the numbers to wear off
  • Automatically change the power source from solar to battery
  • Comes with a hard cover to protect the calculator from falling damage

4. EastPin Basic Solar Power Calculator

Calculator,12-Digit Solar Battery Basic Calculator,Solar Battery Dual Power with Large LCD Display Office Calculators(Black002) (Black002)

This is a great calculator for anyone who needs to do the math on the fly. 

The desktop calculator is solar-powered and has a 1 AA backup battery, allowing it to work in low-light conditions.

The calculator’s 12 digit display provides maximum viewing, making it ideal for large calculations providing maximum viewing.

Eastpin calculators employ a scientific button design that is in line with human behaviors and is comfortable to touch.

It’s not as compact as other calculators, but it has lots of features and definitely worth buying – in my opinion.

What we like

  • One year replacement and refund
  • Durable ABS plastic buttons
  • Easy-to-read numbers for maximum viewing comfort.
  • Has a battery backup in case of low lighting environment

5. Casio Basic Solar Folding Calculator

Casio SL-100L Basic Solar Folding Compact Calculator

Casio crushes the market with its neat folding design calculator that protects buttons and the display from scratches.

The design of this calculator is compact enough to fit in your pocket or purse so it’s always available when you need it.

It can perform the four basic operations as well as percent and square root.

The Casio Basic Folding Compact Solar Powered Calculator also has its own memory for storing numbers for later retrieval.

The buttons are big enough that you never have trouble hitting them with your fingertips or accidentally pressing two of them at once when trying to press one button.

It’s dual powered by solar and a 1 CR2 battery.

What we like

  • Nice spacing between buttons
  • High quality material
  • Extremely portable
  • Stylish design

How Do Solar Calculators Work?

Solar calculators are just like regular electronic calculators.

They have the same buttons, LCD screen, battery, and circuitry.

The only difference is that they have a small solar panel on the front, which is used to recharge the battery and power the calculator.

When sunlight hits the solar panel, it is converted into electricity using the photovoltaic effect, then use this electricity to power the calculator.

If there is an excess amount of energy, it will be stored in the battery for future use.

This allows solar calculators to be more eco-friendly and eliminate the need for frequent battery replacements.

How To Charge Solar Powered Calculators?

You can charge solar powered calculators by leaving them out on a sunny day, or any light source for that matter; It will collect energy throughout the day and night!

How Long Does It Take For Solar Calculators To Charge?

Since they use a photovoltaic cell to capture sunlight, how long it takes for solar calculators to charge varies.

It often depends on how strong the sun’s rays are at that time of day and how powerful your calculator is.

For example, if you have an older model with less power or a weaker charging system, you might need to charge it for 6 hours.

On the other hand, if you have one of the latest models with more power and better technology, it might only take 30 minutes to get a full battery!

Do Solar Powered Calculators Work With Artificial Light?

Yes, solar powered calculators will work with any light source. Solar cells can capture both sunlight and artificial light and convert them into electricity.

However, sunlight is much better and will charge your solar powered calculator way faster.

If you use them under fluorescent lights, for example, it may take several weeks to get a full battery.

On the other hand, if you leave it in front of a window with natural sunlight pouring through (which happens every day) then expect your solar powered calculator to be fully charged within a few days.

How Do I Know If My Solar Powered Calculator has Enough Charge?

If the power button doesn’t work then that means there isn’t enough battery power to turn it on.

When this happens, just leave your calculator in the sunlight for a few hours and try again. On average these calculators take anywhere from 30 minutes to several hours, depending on how much energy is needed.

How Much Power Do Solar Powered Calculators Need?

It takes virtually no energy at all!

On average these calculators require just .02-.03 watts of electricity to operate, which is about how much it takes to power a night light.

How Long Do They Last On One Charge?  

Solar calculators can work with both solar power and battery power, so if you have a fully charged calculator, you can expect it to last for more than 3 years.

How to Choose the Best Solar Powered Calculator?

When shopping for a solar calculator, it is important to consider the size and efficiency of the solar panel.

A larger panel will be able to absorb more sunlight and provide a stronger power source for the calculator.

It is also important to check the battery capacity, as this will determine how long the calculator can run without direct sunlight.

Another factor to consider is the size and weight of the calculator, as a smaller and lighter design will be more convenient for everyday use.

You should also consider the features and functions offered by the calculator, such as tax or currency conversion.

Overall, the best solar calculator is one that strikes a balance between all these factors.

Last Words

If you are interested in how solar powered calculators work and want the best one for your needs, follow these steps.

First, determine how much power you need (based on how often you will use it). Then choose a powerful enough battery so that it doesn’t drain too quickly.

Finally, choose a calculator with as large of a solar panel as possible so you’ll have plenty of surface area for sunlight exposure!

If you follow these steps and do your research thoroughly, how to choose the best solar powered calculator will be easy peasy!

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