Ruipu Q90 Solar Charger 24000mAh In-Depth Review

Ruipu Q90 Solar Charger 24000mAh In-Depth Review


Our electronic gadget usage these days has gone over the charts with people averagely using their mobile devices up to a quarter of a day (6 hours a day). This gives us no choice but to buy secondary power sources like the Ruipu Q90 Solar Charger to back our power-hungry devices up.

  • Ruipu Q90 Solar Charger 24000mAh In-Depth Review in 2020 2-min
  • Ruipu Q90 Solar Charger 24000mAh In-Depth Review in 2020 1-min

Top 6 Reasons to Buy Ruipu Solar Charger

Now, at this point you may be thinking ”Why should I buy a solar charger?”, or ”Why should I particularly choose to buy the Ruipu Q90 solar charger, among all the power banks and solar chargers available in the market?”

Well, If you landed yourself here with those questions in mind, rest assured we will give you 6 solid reasons why you should buy this solar charger.

1 – Design and Appearance

The Ruipu Q90 solar charger comes in 2 colours, either black and red or black and yellow. It has set of 20 solar panels covering almost all of its front face. These panels have 4 battery level indicating LEDs above them, each representing a 25% battery level increase or decrease.

This charger has 3 out-charging ports on top and 1 in-charging port (on the right flank of red and black version and left flank of black and yellow version).

Still, at the top, we can find 2 LEDs which can really come in handy during emergency periods or just to look for something in the absence of light. To activate the LEDs, you have to press the power button twice.

It also features a power button (on the right flank of black and yellow version and left flank of red and black version) which is used for controlling current input and output, or also for triggering it to start working if it does not automatically start charging devices connected to it.

Video Source: The WP Guru
Ruipu Q90 Solar Charger 24000mAh In-Depth Review

2 – Build Quality

Though I believe the Ruipu Q90 solar charger has quite a good build quality, due to its solid outer plastic cover, some few consumers complain of it getting opened after a few drops on the ground but still works after putting it back together.

That said, this solar charger may be resistant to quite a good amount of mechanical damage such as a certain number of falls under 1 meter, but may not survive for long if frequently dropped, thus requiring a little more attention.

3 – Portability of The Ruipu Q90 Solar Charger

The Ruipu Q90 solar charger is made up of about 8 power cells which contain the 24000 mAh power. This has a downside though, given that each of these cells is massive and will, in turn, result in a massive battery.

This massive battery requires a casing of at least 16 cm x 7.7 cm x 2.2 cm or simply a 271 cm cube casing to carry it along. This is quite massive for a power bank, but understandable due to its battery size.

Also, the Ruipu Q90 solar charger has a weight of about 400 g which is quite a lot for a power bank but expected from this power bank in particular, given its battery size.

Well, if you are the type who prefers carrying power banks in your hand or pocket, know that this power bank will not be suited for that at all as it is basically the size of a small bag or purse.

4 – Battery of the Ruipu Q90 Solar Charger

What is best about this solar charger is its massive battery capacity, which seems to last an eternity.

The Ruipu Q90 solar charger has a massive Lithium battery, with a capacity of 24000 mAh. On a single full charge, this solar charger can deliver a 5-time full charge to an iPhone 10 (with a 2716 mAh battery), it can give at least a 2-time full charge to an Ipad Air (with a 7,340 mAh battery) and can even give a full charge to a Chromebook PC.

So, you may be thinking why the Ruipu Q90 solar charger can charge a 2716 mAh battery only about 5 times, while it should be giving an 8 to 10 time full charge.

Well, it is simply due to the total internal resistance of all the materials (battery of solar charger, USB cable and target device’s internal battery) handling the energy transfer process from the solar charger to the target device.

This accounts for the heat generated during the charging process, which serves as a piece of evidence to this theory. This power bank may not be well optimised against much energy loss, accounting for a lower than the normal number of target device full charges.

5 – Charging System

The Ruipu Q90 solar charger has quite a sophisticated charging system, with 1 input charging port, a solar charging system and 3 output charging ports.

This solar charger has 3 USB Type-C USB output ports with port 1 delivering a normal charge of 5 V / 1 A, and ports 2 and 3 delivering a fast charge of 5 V / 2 A.

Personally, I think setting one of the output ports to a regular 5 V / 1 A, greatly helps economise the solar charger’s battery when 3 devices are connected to it and constantly charging up.

Also, this power bank has an input Micro USB port, which supports a fast charge of 5 V and 2 A. This fast-charging system enables the solar charger to get a full charge within 7 to 8 hours, which is really fast as compared to its other 24000 mAh counterparts (Ruipu 121 and Ruipu Q80).

Added to the Micro USB input port, there is a solar charger which gives an input charge of 5 V and 1 W. The solar charging system delivers a slow charge and will take way more time (days) of high-intensity sunlight to completely charge itself up.

Never the less, the solar charging system will always serve to constantly maintain your Ruipu Q90 charged and also serve as an emergency charger during periods of long electricity absences.

One last thing to note is the fact that the charger either charges itself or discharges itself. Don’t charge the charger while charging other devices.

6 – Sales and Package

The Ruipu Q90 solar charger costs under $ 60. Its package comes with a Micro USB cable of about 40 cm long and a portable USB fan which you can use to cool yourself or other devices.

Few Tips To Get You Started

  • Keep your power bank away from water and fire.
  • Preferably give your power bank a full charge before 1st use.
  • Put ON/OFF the 2 LEDs on top by double-pressing the power button in quick succession.
  • The battery level LEDs will automatically start blinking when the solar charger is exposed and charging via sunlight.

What Users May Not Like About The Ruipu Q90 Solar Charger

With a size of about 271 cm cube, this solar charger may usually require a small purse or bag to carry it around.

With its 400 g weight, it makes the user feel uncomfortable carrying it around, especially in a bag or purse, as it adds so much extra weight.

The energy transfer efficiency is not really good, hence slightly reduces the total number of full charges it can deliver to a target device.

Sometimes requires a full charge when it is brand new, for it to function at its optimum performance.

Pros and Cons Summary of The Ruipu Q90 Solar Charger

Below, we are going to give a full recapitulation of all that we have been talking about.


From an in-depth study of the Ruipu Q90 solar charger, we have given it an average rating of 7/10.


  • Good sales price
  • Great package
  • Excellent design
  • Great appearance
  • Good build quality
  • Fair size
  • Fair weight
  • Excellent charging system


  • Not really portable
  • Low energy transfer efficiency
  • 1 – 2 full charges/discharges to get optimum performance

Conclusion on The Ruipu Q90 Solar Charger

The Ruipu Q90 solar charger is a life saving secondary source of energy which will get you covered for very long periods in the absence of electricity. Also, its solar charging ability adds a limitless recharge option, permitting you to charge it any time within sunlight.

Some Frequently Asked Questions and Their Answers

  1. Why is my Ruipu solar charger not charging?

    According to the manufacturers, it is preferable to give a full charge to your solar charger before its first use. Especially when it has been bought brand new.

  2. How long does the Ruipu solar charger need to charge itself completely with its solar panels?

    From the math I got from ”The WP Guru”, this charger has 20 solar panels with a size of 0.8 x 2.5 cm, giving an area of 0.004 cm square.When exposed fully to sunlight, the solar panels will give you about 8% power.8% power is actually 80 W/m square x 0.004 m square, giving 0.3 watts for solar charging power.Which is the equivalent of about 65 mA at 5V or 88 mA at 3.7 V.A continuous 273 hours of full sunshine will charge 24000 mAh at 88 mA.




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