Sienna Solar > Products > 12V Solar Panels > DOKIO 300W 18V Portable Solar Panel Kit Folding Solar Charger with 2 USB Outputs for 12v Batteries/Power Station AGM LiFePo4 RV Camping Trailer Car…
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DOKIO 300W 18V Portable Solar Panel Kit Folding Solar Charger with 2 USB Outputs for 12v Batteries/Power Station AGM LiFePo4 RV Camping Trailer Car…
【FOLDABLE AND LIGHTWEIGHT EASY TO STORE】– This solar panel photovoltaic packs 300W of power yet is only 1.1inch(2.8cm )thick and weighs only 17lb(7.5kg), making it easier to mount,transport, hang, and remove.
【COMPLETE KIT,WORKS OUT OF THE BOX 】– Solar charger for all 12V batteries ,with its 18V optimum power voltage.Protection against: overcharging, overload, short-circuit
【PERFECT CHOICE FOR OUTDOOR AND EMERGENCY LIFE】– 9.85ft (3m) cable length from panel to controller, For most power stations (Jackery,Goal Zero,Ecoflow,Paxcess) and 12-volt batteries(AGM,LiFePo4,Deep cycle batteries),RV,car,boat,trailer,truck,pumpa,camping,van,emergency power
【PUT A LOT OF POWER INTO YOUR BATTERY BANK】– powerful high conversion efficiency with high efficiency monocrystalline solar cell, you will get greater power efficiency even though the panel is smaller than a traditional model.Maximizes system output by reducing mismatch loss
【WELL PACKAGED, QUICK DELIVERY】– Amazon US warehouse shipping, Receive goods in time，come with a 30-day money back Guarantee, 1-year warranty and forever support from DOKIO customer care.
Additional information
Brand
DOKIO
Manufacturer
DOKIO
Efficiency
High Efficiency
Style
Usb
Connector Type
USB
Included Components
Bag
Maximum Voltage
18 Volts
Maximum Power
300 Watts
Product Dimensions
41"L x 21"W x 1.1"H
Material
Monocrystalline Silicon
Item Weight
16.46 pounds
Part Number
DOKIO-FFSP
Country of Origin
China
Item model number
Solarpanel -300w
Size
300W
Power Source
Battery Powered,Corded Electric
Wattage
300 watts
Item Package Quantity
1
Batteries Included
No
Batteries Required
No
8 reviews for DOKIO 300W 18V Portable Solar Panel Kit Folding Solar Charger with 2 USB Outputs for 12v Batteries/Power Station AGM LiFePo4 RV Camping Trailer Car…
Rated 3 out of 5
potna –
they are not 300 watt panels. i suspect they are 240 watt. i ordered three sets of these, they were all supposed to be new, they were all used, but in good shape. two of the sets out put is exact, one set is about 6% less than the other two for what ever reason. this folding panel kit inludes everything but the battery, but the cables are so short you will be sitcking your batter out in the sun to get charged, same with the charge controller. you can buy extensions but you need to know these panels can and i can confirm will output 17 amps @ about 13.8volts, so be mindful of your cables, that is a fair amount of amps for such low volts. the panels are heavier than i thought they would be, which can be a good thing, they fold up and can be stowed easily, but this is also a problem. they absolutly need to do be flat and angled towards the sun for good power production, like all solar panels. i think everyone leaving reviews talking about 140 watts is expecting good performance laying flat, which i understand almost all youtubers show them flat on the ground. so, they need to be propped up and angled correctly, this panel is large and floppy. i built a stand for them and guess what, now i have to tote this stand around with me, making these panels not so portable and easy. glass panels can be leaned against anything and they hold their shape, these dokio panels will flopp and bend under their own weight almost like a wet peice of paper, and they can crack if you arent careful. also, just 4 inches on grass shadow on one panel will reduce its output by almost 1/4. it appears i got more power than anyone that mentioned actual stats, and i used my own equipment to measure this. the dokio pwm controller lies, it will claim 250 watts when i am in fact getting 220 watts for example. i have all kinds of stats i can share, and i can tell you i think i found the cells these panels are made of and i think the manufacture lies about the cell stats which leads to dokio’s numbers being wrong. i will tell you just a few more stats: laying the panels flat in the grass i got (not the best day for sun) : 12.72v x 7.16a=91 watts, put it up on my stand and i got: 12.98v x 12.73a=165 watts. i connected two dokio 300 watt panel kits in series on the ground and only got 12.79v x 11.01 amps =140 watts lol. one panel positioned correctly does better than two laying flat, i think the above tests were done around 2pm northern indiana in late february on medium partly sunny day using included pwm controller. since then i have had better tests and better days of sun and found this panel performs just as good on the included pwm as it does on my mppt charge controller. max power i have seen from pwm is 220 watts and about 13v 17amps= 225 watts on mppt, albeit using perfect angle charging a battery with a huge load to ensure max output from panels and controllers. this panel i suspect is made up four panels and i suspect the are actually 60 watts each not 75. also they are wired in parallel, which is not good as it shoots the amps up and while we want good amps it is important to know how V x A = W and we should have high voltage and lower amps going to the charge controller, then let the controller step it down to 12v for the battery. i wish i knew more about the internal construction as i suspect if you were to rewire these in series and ran them to a mppt you could get a 50 foot cable and get about 230 watts from them with the controller and batteries inside where its at least dry and out of the sun. i am returning these as i can and have got three glass panels that will give me about 276 watts wires in series with 50 foot cable run, according to my current test data, for about $240 and a mppt controller for about $100, which i already had for a total of $340 and they can be leaned against anything but i will continue to use the stand i built for the dokio panels. the dkio panels are over priced, they lie about its specs, they are floppy and you need to stand them up, right on the main selling page they say dont even leave them out side for one night which concerns me, the glass panels i got come with a 25 year warranty. i wanted to add that i did more testing today and two rich solar 100 watt panels produced about 98% of the power of this “300 watt” kit. i still like this kit and i bought 3 and decided to keep one, may toss it in a vehicle or take it to work for emergency power, especially since we are headed into tornado season now.
Rated 5 out of 5
007 –
Good value for the money
Rated 5 out of 5
Cliente de Amazon –
Práctico, funcional, buena tecnología
Rated 5 out of 5
Charlesbourg –
Parfait pour mettre dans le VR. Le contrôleur est assez basique, j’ai acheté un MPPT avec module BT. Mais le contrôleur inclus semble quand même correct après essaie.
Rated 5 out of 5
Mark0 –
Please keep in mind that when it comes to solar panels the wattage rating usually equates to what is possible under laboratory conditions and just about never can be recreated in the real world. With that said, here’s my review:
As the headline reads, this is not exactly ‘light’. Surely easy enough for one person to move around and deploy and it folds down to a size that was easy enough to find room for behind the front seat of my truck. Since my RV already has a decent MPPT charge controller I decided I’d add on to the existing one (besides the included controller that came as part of the ‘kit’ HAS to be protected from the elements (direct sun & moisture) so was of little use to me to use along with my existing one.
The ‘kit’ came with a ~10′ cable that has connectors on both ends to use hooking it up. One end has a SAE connector that plugs into the panel and the other end I cut off and replaced with Anderson connectors. A word of caution here: Due to SAE’s ‘keying’ the +/- wires will reverse unless a little SAE-2-SAE adapter is used to change the polarity of the wires.
Given I don’t live in a LAB and I’m above the 45th I did not have high expectations for this panel. However it was a bright and sunny day in May and with a clear view of the sky (not a cloud in it) I set up the panel in my front yard. My existing solar panel (68W) was putting out ~40W when I plugged Dokio in parallel to it.
The solar panel wattage reading on my phones Bluetooth app went from ~40W to ~210W after plugging in the Dokio – showing that the Dokio 220W panel was providing ~170W of the ~210W total.
IMHO: not bad!
I plan on adding a fused SAE connector on my RV and keeping the panel behind the front seat of my truck. While the included cable is far to short (I ordered a 25′ SAE-2-SAE cable from Amazon) this will come in handy to add more ‘juice’ while I’m out in the wild – which is mostly what I do when I go out camping, I rarely have RV hookups even when I camp at official campgrounds. (I’m a boondocker!)
Granted, had I not already had a better solar controller installed I could of wired up and installed the one included in the kit. Sure, it is fairly basic but at least it has different battery type settings so you can match it to what your using.
I should note that when my panel kit arrived all that showed up was the panel box, nothing else! I contacted Amazon which asked me to contact the vendor and within 24hrs they responded and 48hrs later a FEDX truck dropped off the rest of the kit! I’d say very good support from the vendor!
To conclude I’d say that so far I’m happy with my purchase and the support I’ve gotten from the vendor. 🙂
UPDATE (9/22/2022): I’ve tried using the panel a number of times since purchase. As an example, I currently have it set in my front yard attempting to charge a power brick. While @ 9AM the sun is low in the sky the entire panel is ‘lit’ with sunlight but only putting out ~50W of power. As a ‘control’ I also plugged in a 100W panel and only got 25W out of it.
Rated 4 out of 5
WEGal –
I have purchased two of these portable solar panels to help recharge various usb-rechargeable devices that I have been using to try to mitigate price-gouging by the local power company (rates *doubled* in January).
The panels are easy to set up and use. I have my two hanging in south-facing windows on my enclosed porch. They get enough sunlight even through the storm window glass, and on cloudy days, to meet my needs.
One detail to keep track of is the heat that is generated through the connector panels. They do get rather warm when USB devices are connected to them, so I would not recommend placing them on any surface that might be heat-damaged. So far I have not experienced them getting to hot to touch – just being cautious!
I have not tried charging a 12-volt car battery from these, so I can’t speak to that functionality.
One thing that isn’t clear is whether these panels can safely be daisy-chained together (as some other panels can be) to generate higher voltage, or whether it would even be safe to do so with them. But I am quite satisfied with this purchase.
Rated 4 out of 5
Mariette –
The size and portability is a definite plus for these panels; they fold up and hide quite nicely behind the couch in my RV. They do the job of charging my battery, but nowhere near the claimed 200 watts. In direct sunlight I can count on about 100-120 watts.
Rated 5 out of 5
Tom Lambert –
This set up seems wonderful but it does not operate at the expected 16 amps I would expect from 200 watts of solar.. I could only achieve 7.5 watts in full bright sunlight.. Very dissatisfied with these results..
potna –
they are not 300 watt panels. i suspect they are 240 watt. i ordered three sets of these, they were all supposed to be new, they were all used, but in good shape. two of the sets out put is exact, one set is about 6% less than the other two for what ever reason. this folding panel kit inludes everything but the battery, but the cables are so short you will be sitcking your batter out in the sun to get charged, same with the charge controller. you can buy extensions but you need to know these panels can and i can confirm will output 17 amps @ about 13.8volts, so be mindful of your cables, that is a fair amount of amps for such low volts. the panels are heavier than i thought they would be, which can be a good thing, they fold up and can be stowed easily, but this is also a problem. they absolutly need to do be flat and angled towards the sun for good power production, like all solar panels. i think everyone leaving reviews talking about 140 watts is expecting good performance laying flat, which i understand almost all youtubers show them flat on the ground. so, they need to be propped up and angled correctly, this panel is large and floppy. i built a stand for them and guess what, now i have to tote this stand around with me, making these panels not so portable and easy. glass panels can be leaned against anything and they hold their shape, these dokio panels will flopp and bend under their own weight almost like a wet peice of paper, and they can crack if you arent careful. also, just 4 inches on grass shadow on one panel will reduce its output by almost 1/4. it appears i got more power than anyone that mentioned actual stats, and i used my own equipment to measure this. the dokio pwm controller lies, it will claim 250 watts when i am in fact getting 220 watts for example. i have all kinds of stats i can share, and i can tell you i think i found the cells these panels are made of and i think the manufacture lies about the cell stats which leads to dokio’s numbers being wrong. i will tell you just a few more stats: laying the panels flat in the grass i got (not the best day for sun) : 12.72v x 7.16a=91 watts, put it up on my stand and i got: 12.98v x 12.73a=165 watts. i connected two dokio 300 watt panel kits in series on the ground and only got 12.79v x 11.01 amps =140 watts lol. one panel positioned correctly does better than two laying flat, i think the above tests were done around 2pm northern indiana in late february on medium partly sunny day using included pwm controller. since then i have had better tests and better days of sun and found this panel performs just as good on the included pwm as it does on my mppt charge controller. max power i have seen from pwm is 220 watts and about 13v 17amps= 225 watts on mppt, albeit using perfect angle charging a battery with a huge load to ensure max output from panels and controllers. this panel i suspect is made up four panels and i suspect the are actually 60 watts each not 75. also they are wired in parallel, which is not good as it shoots the amps up and while we want good amps it is important to know how V x A = W and we should have high voltage and lower amps going to the charge controller, then let the controller step it down to 12v for the battery. i wish i knew more about the internal construction as i suspect if you were to rewire these in series and ran them to a mppt you could get a 50 foot cable and get about 230 watts from them with the controller and batteries inside where its at least dry and out of the sun. i am returning these as i can and have got three glass panels that will give me about 276 watts wires in series with 50 foot cable run, according to my current test data, for about $240 and a mppt controller for about $100, which i already had for a total of $340 and they can be leaned against anything but i will continue to use the stand i built for the dokio panels. the dkio panels are over priced, they lie about its specs, they are floppy and you need to stand them up, right on the main selling page they say dont even leave them out side for one night which concerns me, the glass panels i got come with a 25 year warranty. i wanted to add that i did more testing today and two rich solar 100 watt panels produced about 98% of the power of this “300 watt” kit. i still like this kit and i bought 3 and decided to keep one, may toss it in a vehicle or take it to work for emergency power, especially since we are headed into tornado season now.
007 –
Good value for the money
Cliente de Amazon –
Práctico, funcional, buena tecnología
Charlesbourg –
Parfait pour mettre dans le VR. Le contrôleur est assez basique, j’ai acheté un MPPT avec module BT. Mais le contrôleur inclus semble quand même correct après essaie.
Mark0 –
Please keep in mind that when it comes to solar panels the wattage rating usually equates to what is possible under laboratory conditions and just about never can be recreated in the real world. With that said, here’s my review:
As the headline reads, this is not exactly ‘light’. Surely easy enough for one person to move around and deploy and it folds down to a size that was easy enough to find room for behind the front seat of my truck. Since my RV already has a decent MPPT charge controller I decided I’d add on to the existing one (besides the included controller that came as part of the ‘kit’ HAS to be protected from the elements (direct sun & moisture) so was of little use to me to use along with my existing one.
The ‘kit’ came with a ~10′ cable that has connectors on both ends to use hooking it up. One end has a SAE connector that plugs into the panel and the other end I cut off and replaced with Anderson connectors. A word of caution here: Due to SAE’s ‘keying’ the +/- wires will reverse unless a little SAE-2-SAE adapter is used to change the polarity of the wires.
Given I don’t live in a LAB and I’m above the 45th I did not have high expectations for this panel. However it was a bright and sunny day in May and with a clear view of the sky (not a cloud in it) I set up the panel in my front yard. My existing solar panel (68W) was putting out ~40W when I plugged Dokio in parallel to it.
The solar panel wattage reading on my phones Bluetooth app went from ~40W to ~210W after plugging in the Dokio – showing that the Dokio 220W panel was providing ~170W of the ~210W total.
IMHO: not bad!
I plan on adding a fused SAE connector on my RV and keeping the panel behind the front seat of my truck. While the included cable is far to short (I ordered a 25′ SAE-2-SAE cable from Amazon) this will come in handy to add more ‘juice’ while I’m out in the wild – which is mostly what I do when I go out camping, I rarely have RV hookups even when I camp at official campgrounds. (I’m a boondocker!)
Granted, had I not already had a better solar controller installed I could of wired up and installed the one included in the kit. Sure, it is fairly basic but at least it has different battery type settings so you can match it to what your using.
I should note that when my panel kit arrived all that showed up was the panel box, nothing else! I contacted Amazon which asked me to contact the vendor and within 24hrs they responded and 48hrs later a FEDX truck dropped off the rest of the kit! I’d say very good support from the vendor!
To conclude I’d say that so far I’m happy with my purchase and the support I’ve gotten from the vendor. 🙂
UPDATE (9/22/2022): I’ve tried using the panel a number of times since purchase. As an example, I currently have it set in my front yard attempting to charge a power brick. While @ 9AM the sun is low in the sky the entire panel is ‘lit’ with sunlight but only putting out ~50W of power. As a ‘control’ I also plugged in a 100W panel and only got 25W out of it.
WEGal –
I have purchased two of these portable solar panels to help recharge various usb-rechargeable devices that I have been using to try to mitigate price-gouging by the local power company (rates *doubled* in January).
The panels are easy to set up and use. I have my two hanging in south-facing windows on my enclosed porch. They get enough sunlight even through the storm window glass, and on cloudy days, to meet my needs.
One detail to keep track of is the heat that is generated through the connector panels. They do get rather warm when USB devices are connected to them, so I would not recommend placing them on any surface that might be heat-damaged. So far I have not experienced them getting to hot to touch – just being cautious!
I have not tried charging a 12-volt car battery from these, so I can’t speak to that functionality.
One thing that isn’t clear is whether these panels can safely be daisy-chained together (as some other panels can be) to generate higher voltage, or whether it would even be safe to do so with them. But I am quite satisfied with this purchase.
Mariette –
The size and portability is a definite plus for these panels; they fold up and hide quite nicely behind the couch in my RV. They do the job of charging my battery, but nowhere near the claimed 200 watts. In direct sunlight I can count on about 100-120 watts.
Tom Lambert –
This set up seems wonderful but it does not operate at the expected 16 amps I would expect from 200 watts of solar..
I could only achieve 7.5 watts in full bright sunlight..
Very dissatisfied with these results..