Do solar power banks really work, part 2: Are 4 panels really better than 1?

Portable power banks are great, they let us take extra power with us wherever we go.

Solar power banks give us the additional benefit of charging our power banks wherever we go.

But not all solar power banks are created equal.

Do extra solar panels actually give you extra charging power?

Watch and learn friends.

Link to 4 Panel Power Bank on Amazon:
Tranmix Hi-2025:

The link for the 1 panel AMZLAB ES928 power bank on Amazon no longer functions.

First movie clip was from "Bill and Ted's Bogus Journey"
Second movie clip was from "21 Jump Street"
Background music was "Operatic 3" by Vibe Mountain

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[ge_mail]

Surprisingly I implicity trust a reviewer who cant edit their own videos well. I trust their raw honesty.

I have been trying to get inputs on this issue and yours are the clearest and most practical. Thank you👍

[dannyd]

Great video. If you angle the solar panels towards the sun throughout the day, laying flat only when the sun is over head you will get far greater efficiency. ; )

[jtnelms]

My solution on Kilimanjaro (and what I'm recommending to those going with me in February) --> 21W foldable solar panel (clipped on backpack) + 2 10K mAh power banks (the panel charges both at the same time).

Worked well for me early this year for my first summit. :)

[sunshinecitysolarlight]

Excellent review 👏 👌 . I did a testing of the both and my result found that the 4 panel took 4 days to be fully charged and the 1 panel took 7 days . This was because am in a country which is very sunny . Jamaica 🇯🇲 🇯🇲 🇯🇲 ❤

[OnusBones]

After using a number of these devices, I would suggest buying a $40-$60 folding solar panel to charge any of them. With maximum outputs typically in the 15W-30W range, they will charge one of these power banks at its maximum rate (typically about 2A). Have the built-in panels for emergency use, but use a separate panel when possible.

[johnwilson]

Great video. I bought the same Tranmix solar charger on Amazon for $33, and it was on limited time deal.

I tested it out at home before our wilderness adventure and it was able to keep my heavily used iphone charged for a week without having to plug in the charger. Once on the trail, I was only able to set out the solar flaps for a couple hours, late in the day at most and it still kept both of our iphones charged.

[torty]

I’m really surprised your videos don’t have more views. Your content is quality and gets to the point. I wish you the best in your YouTube career!

[amyhintz]

Appreciate the review! Bought multiple for gifts, mostly single panels but one that had 4 panels for family that snowmobiles in northern Upper Michigan. Using common sense comparison I questioned that the only difference was the number of panels but further questioned if there truly was a difference. Power usage and charge may be more valuable for safety while snowmobiling in remote areas which is the reasoning behind the gift. Many thanks. You spoke well and the bit of humor worked for me! Take care!

[tonyblack]

Straight to business with it. I love it

[regibson]

Diminishing returns shouldn't affect electricity. I have 42 360 watt solar panels on my house and just because they're tied together doesn't make them into 320w panels.

More likely is the 4 panel had less efficient panels than the single. And/or the actual capacity of the battery for the single panel is smaller than it's rated.

[Greenliight]

I am a solar installer and use this throughout the day and it’s perfect because we install in the most sun optimal spots on the roof

[Theultrazombiekiller]

I have the bank with multiple panels. Where I live we RARELY have overcast days, maybe 15 a year, I am able to keep it charged pretty easily.

[Adam]

Thanks for the info, this was exactly what I was trying to figure out when I started my YouTube search today

[danielkramar]

I placed both power banks on my "solar regeneration platform" -- aka my BBQ grill. hehehe
😂😂😂

[patriciamata]

I really appreciate the short and to the point information. Thank you.

[maddycanfly]

Thanks for answering all my solar power bank questions !!!!

[watashibr]

There are all my favorite things in your scenario, outstanding! My favorite sport is Formula 1 and there is Lewis Hamilton. One of my favorites movies, Back to the Future is there too. I did not watch Cobra Kai yet but I love Karate Kid movies. Ripley from Alien movies... Even the Star Trek 3D Chessboard is there, I always want to play that, could we face Spock? I love chess. Smartphone stands... Awesome! I love languages, I study English, Spanish, Japanese and play with Irish and Hawaiian as hobbies, my main language is Portuguese, and there is a black cube with Naka Kanji that could mean middle, center, inside... I am studying about solar energies so it brought me here. Excellent channel, You got a subscriber! Thank you and success!

[PeaceChanel]

Thank You for All that you are doing for World Peace and for our Planet...
Peace.. Shalom.. Salam.. La Paz.. Namaste ..
🙏🏻 😊 🌈 ✌ ☮️ ❤️ 💐 🕊

[Deruzejaku]

Another question would be real capacity of both powerbanks which may wary greatly

[Countcho]

I live in the desert (nevada). This thing charges faster than i expected.