Product information

Brand

K-TOR

Wattage

20 watts

Power Source

Manual

Item Weight

5 Pounds

Voltage

120 Volts

Output Wattage

20 Watts

Special Feature

Portable, Lightweight

Color

Black

Material

Steel

Engine Type

4 Stroke

Frequency

60 Hz

Product Dimensions

12 x 3.5 x 5.5 inches

Item Weight

5 pounds

Manufacturer

K-Tor

ASIN

B00EZS8VQS

Item model number

A2

Customer Reviews

3.4 60 ratings

3.4 out of 5 stars

Is Discontinued By Manufacturer

No

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Product Description

The K-Tor Power Box is a 20 Watt pedal generator with an universal international power socket. Plug in your wall charger and charge your portable electronics at the same rate as plugging in a wall outlet. You can charge multiple devices at once up to 20 watts or an external 12 volt battery to power larger devices like laptops or appliances with 12 volt power stream charger sold seperately.

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	See details	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart
Price	Currently unavailable.	$129.99	$3,199.00	$329.00	$134.47	$1,154.87
Delivery	—	—	Get it May 3 - 6	Get it as soon as Saturday, May 4	Get it as soon as Saturday, May 4	—
Customer Ratings	3.460	5.01	4.6485	4.639	5.03	4.5762
Value for money	—	—	4.6	4.3	—	4.4
Sold By	—	ALininin	EF ECOFLOW-US	Zeus Dynamo	GRXH	Amazon.com
power source	Manual	Manual Power Generation or Charger	‎Solar Powered, Battery Powered	hand-powered	Solar Powered	gas-powered
engine type	4 Stroke	4 Stroke	—	—	4 Stroke	4 Stroke
output wattage	20 watts	150 watts	—	60 watts	150 watts	12000 watts
wattage	20 watts	150 watts	2048 watt hours	60 watts	150 watts	9000 watts
voltage	120 volts	—	120 volts	20 volts of direct current	15 volts	120 volts
weight	5 pounds	4.76 pounds	92 pounds	4.07 kilograms	—	206 pounds

Customer reviews

3.4 out of 5

60 global ratings

How customer reviews and ratings work

Customers say

Customers like the performance of the electricity generator. They say it works great and is operational enough for both devices. They appreciate the quality. However, some customers have reported issues with the amperage, housing, and noise. They mention that the unit is noisy and sounds like an electric drill. They also dislike resistance. Opinions are mixed on the build quality.

AI-generated from the text of customer reviews

4 customers mention4 positive0 negative

Customers are satisfied with the performance of the electricity generator. They mention that it works great now, is much more operational over a longer period of time, and works well enough for both devices.

"...6 more smoothly than my new Samsung Galaxy 8, but it works well enough for both devices and any inconsistencies in pedaling resistance when charging..." Read more

"...Works great now. The way I was using it was actually the problem. Great response from the company, sorted me out in no time." Read more

"...I like the bicycle peddles. It is much more operational over a longer period of time using both feet or both hands. Other devices use only one hand...." Read more

"Works as advertised. Small but well built...." Read more

3 customers mention3 positive0 negative

Customers are satisfied with the quality of the generator. They mention that it is very practical, an awesome little generator, and a life saver.

"This product is truly a life saver!..." Read more

"Awesome little generator from a great company!..." Read more

"Very practical..." Read more

8 customers mention5 positive3 negative

Customers have mixed opinions about the build quality of the electricity generator. Some say it's well built and reliable, while others say that the components crack and break fairly often.

"...pedal unit it was reliable. Using the Powerbox in that fashion provides a great upper body workout. I have two Powerboxes and I am satisfied...." Read more

"It charges well and the construction feels sturdy but it slides around constantly (Which i expected)...." Read more

"...gearing system inside still uses plastic gears, and thus the entire system feels flimsy...." Read more

"I like the engineering and the device appears tough. I like the bicycle peddles...." Read more

3 customers mention0 positive3 negative

Customers are dissatisfied with the amperage of the electricity generator. They mention that it produces little power and is useless. Some customers also say that the generator stopped working for some reason.

"...It was no longer working for some reason, so I had to return it back...." Read more

"Awkward to use. Mostly a toy to use. Nor2much power from this. Go solar and you'll be better than this." Read more

"...But didn't tell how long it would take, or the the low amperage output, which makes it useless if it takes so many hours of pedaling...." Read more

3 customers mention0 positive3 negative

Customers are dissatisfied with the housing of the electricity generator. They mention that the two supports are molded plastic, and the gear system inside still uses plastic gears.

"...the job. The housing is plastic and not intended to be stepped on, or abused like a bicycle. Let's face it bikes are made of steel...." Read more

"...Be careful though, the gearing system inside still uses plastic gears, and thus the entire system feels flimsy...." Read more

"...The two supports are molded plastic, so immediately I knew I will be having to build some type of infrastructure to make sure it lasts...." Read more

3 customers mention0 positive3 negative

Customers are dissatisfied with the noise produced by the electricity generator. They say it sounds like an electric drill.

"...may not be possible to correct is the unit is noisy and sounds like an electric drill. In a hurricane or blackout, who cares, right...." Read more

"...Also the noise is pretty annoying. However it's always a good exercise paddling this generator when I sit and watch the ipad with my earphone." Read more

"...It is also very loud." Read more

3 customers mention0 positive3 negative

Customers are dissatisfied with the resistance of the electricity generator. They mention that it has a lot of resistance, the pedal resistance is not constant, and it's impossible to pedal at a constant rate.

"The unit had a problem where the resistance is not constant...." Read more

"This is a really tough model. My fingers were wounded several times while assembling the paddle and stand for the generator...." Read more

"...There is a lot of resistance even with no load on the system. They were not able to light an incandescent bulb...." Read more

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Top reviews from the United States

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Right Meow

Great backup for emergencies!

Reviewed in the United States on March 13, 2018

Verified Purchase

You know how those crank chargers you buy usually never actually charge anything like they're supposed to? Well, this one does. I find that it charges my old iPhone 6 more smoothly than my new Samsung Galaxy 8, but it works well enough for both devices and any inconsistencies in pedaling resistance when charging the Samsung were smoothed out by plugging it into a surge protector (for some reason). Was able to charge both devices no problem at about the same speed you'd expect from a wall charger. The device is simple to put together and easy to use. I have mine mounted to a cheap 2' x 2' piece of plywood to keep it stable, and could probably pedal away for at least a half hour with my feet without breaking much of a sweat. A solar setup would be less work, of course, but I live in a part of the country that experiences power outages in winter due to ice storms and blizzards...when there's usually no sun available! So, yeah, this will be a fantastic emergency backup to have should we ever lose power again. The few negative reviews I saw seemed to be coming from people expecting it to do more than it was ever intended to do. FYI, I havent tried to charge a 12 volt battery with this yet, but I will update my review when I do. (Waiting for payday to buy that and an inverter. Lol.) P.S. The company owner responds to customer inquiries really quickly, which is awesome. It's a bit pricey, I think, but it's made in the U.S., the customer service is great, and it actually works. It's a long-term investment, and the peace of mind is worth the price IMO.

11 people found this helpful

Helpful

Reese

Make sure you have some sandpaper handy

Reviewed in the United States on June 30, 2018

Verified Purchase

The machining on the screws for this generator is very poor. Sharp edges poke out of the heads of the screws which can cause injury due to their close proximity to your feet while pedaling (see attached). The left pedal also has a tendency to work itself loose during usage. I've requested a replacement from the supplier and will update my review based on their response.

4 people found this helpful

Helpful

Amazon Customer

An advancement in Generator design

Reviewed in the United States on April 18, 2014

Verified Purchase

I would rate this product five stars because Ken Torino, the designer has shown an incredible
willingness to work with me, a very demanding customer. I went with four stars because there is
room for improvement. The product performs as advertised and generated enough power to keep your
cell phones and tablets charged. The design is innovative, and the portability excellent. My goal was to use it as an exercise bike
and the stress of the weight and force pedalling exerts caused the Powerbox to break. This is not the fault of the Powerbox per se, it does
the job. The housing is plastic and not intended to be stepped on, or abused like a bicycle. Let's face it bikes are made of steel.
The product is terrific for Apple Products and chargers. My Samsung Galaxy Note 3 and Samsung Note 10.1 with two amp chargers
taxed the Powebox to the limit, mainly because Samsung has maxed out fast charging and as long as I used the Powerbox as a hand
pedal unit it was reliable. Using the Powerbox in that fashion provides a great upper body workout. I have two Powerboxes and I am satisfied. My only complaint that may not be possible to correct is the unit is noisy and sounds like an electric drill. In a hurricane or blackout, who cares, right. If you use this every day for charging your phones in the house or an apartment expect some negative feedback from those not pedalling. It is annoying. Ken has indicated he is working on a more robust higher power design, and I expect that will be
another breakthrough in Generator design. If you ar an enthusiastic Prepper or just an interested engineering type who cares about power generation and emergency services, I wouldn't wait, I'd buy a Powerbox. If you have a problem K-Tor has the best customer service I have ever dealt with.

145 people found this helpful

Helpful

Mitchell

Meh

Reviewed in the United States on August 24, 2016

Verified Purchase

It charges well and the construction feels sturdy but it slides around constantly (Which i expected). My main problem is the right pedal unscrews itself after several dozen rotations. Ive tried tightening and over tightening it but it always unscrews.

Very disappointed and frustrated about this

13 people found this helpful

Helpful

Amazon Customer

NO THANKS!!

Reviewed in the United States on January 9, 2017

Verified Purchase

I'm a father working on, emergency services for my family, this item didn't begin to work. Today the power went out in our country. Out of the box, $200, nothing....then, you want us to buy external batteries to charge? 1st, you say you can use your hands??? Do it, and lets watch! 2nd, then you want us to build a "mounting box"? So, then,"charge up" a lead acid battery? Then you show your "work table display" with NOTHING that works with this unit! I specifically bought this to charge a Laptop. So another of your supporting videos says about, "2 hours to charge a phone"? Ok, WE tried to charge a Motorola Cell phone for 25 minutes and got nothing. Actually I tried charging everything. our Acer tablet lite up but never charged 1 percent. I also tried a volt meter and did see it jump a couples of times. 3rd, I wouldn't suggest this item for any situation, especially emergencies. I'll try to use the pedals one day on my children bicycles. Rev. Pearce

15 people found this helpful

Helpful

C.M.Rogers

Pedal resistance not constant. Impossible to pedal at a constant rate.

Reviewed in the United States on December 14, 2015

Verified Purchase

The unit had a problem where the resistance is not constant. Every three times around, the pedal force increases dramatically, then let up again for three more turns. Made it impossible to pedal at a constant pace.

(EDIT: 5 stars now, turns out I had plugged too much into it. The device adjusts the resistance automatically for the power draw, and I was over-loading it. Works great now. The way I was using it was actually the problem. Great response from the company, sorted me out in no time.

82 people found this helpful

Helpful

Sandaniel

Awesome little generator from a great company!

Reviewed in the United States on February 19, 2014

Verified Purchase

My experience with this generator and the company who invented this has been very pleasant. When my shipment came, my ktor generator had a problem after a few weeks using it. It was no longer working for some reason, so I had to return it back. The company accepted my request and shipped me a fully working one without any hassle. Great power back up during times of emergency. The only thing I couldn't figure is how to charge a 12 volt battery...

24 people found this helpful

Helpful

Top reviews from other countries

Translate all reviews to English

Amazon カスタマー

便利だけど色々惜しい

Reviewed in Japan on November 28, 2018

Verified Purchase

停電対策に買いました。スマホやゲームの充電ができるので安心です。
折り畳めるので外に持ち出すのも比較的容易だと思います。
短絡させれば火起こしすら可能です。
ただ悪いと思った点がいくつかあります。
・室内で使うにはペダルがトゲトゲしてて痛い。
・床に接する部分が滑りやすい（しかも何かに固定しにくい形状）
・ギア比が軽いです。100V出力するには1秒間に1.5回のペースで回す必要があります。BPM180のペースで片足づつ踏み込むと考えるとかなり速いことが分かると思います。ギア比を上げてペダルが重くてももう少し遅いペースで漕げれば楽だと思います。子供でも使えるようにっていう配慮？

27 people found this helpful

Translate review to English

JaH Montréal

2 utilités en 1

Reviewed in Canada on January 24, 2024

Verified Purchase

C'est un pédalier qui permet de faire de l'exercice tout en rechargeant un petit appareil.

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Amazon カスタマー

対応出力２０Wまで

Reviewed in Japan on August 31, 2019

Verified Purchase

期待通りの製品です。携帯などは充電しっかりできます。
私にとっての想定外は、充電したいもの「バッテリー」の充電には３０W必要だったということです。
これを充電しようとすると、ちょっと充電。出力足りず。オフ。また発電。という感じで、で回す負荷がムラになる現象がおこるようです。このまま使い続けると、本機にも、バッテリーにも悪影響とのこと。（カスタマーセンタの対応は、とても丁寧なので星５＋アルファです。）

何に使うか？それは何Wか？　よく調べておくと良いでしょう。

21 people found this helpful

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Amazon カスタマー

ほとんど不良品。返品しました。

Reviewed in Japan on November 15, 2018

Verified Purchase

充電されたりされなかったりで、1時間充電しても1％も充電が増えない。