How do you store the energy you get from solar panels. Tell me what device or part i need to connect to the solar panels to store the energy to use it later on in the day aftter the sun is out?
Question by dorotheabrown37 | last reply
Hi. I am a student who yearly participates in a solar boat regatta, and is wondering how he can boost his panel's rate of energy... collection. I have thought of trying reflectors, and am wondering if this would work. anyone know, or have a better idea?
Topic by DELETED_craz meanman | last reply
Hello i am long time lurker of instructables.com and i love the site and its inspired me to build a few things. that said onto my question. i was at my local Dollar Tree Store (Dollar Store) and noticed the solar powered walkway lights. so i bought a few and decided i could salvage the solar panels.. so a few screws and some applied pressure later i have some small cells 35.6mm by 29.6mm with a model number (SC3630S-4N) and everything so i googled it and i get this website as the only one listing voltages and mA's but there are two sets and i am unsure which set i need to be aware of and exactly what it all means. http://www.aliexpress.com/product-fm/432233432-solar-cell-Embeded-Modules-Outdoors-wholesalers.html so any one can explain to me what the 4 values mean i know (V) is voltage and (mA) is amperage but why list them twice.
Topic by jgosselin | last reply
I know that you can wire solar panels together to combine the amps. But I've only ever seen this done with 2 identical panels. Would there be any problem with wiring up 2 panels with different A values? More specifically these 2 panels. http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item;=390312612951&ssPageName;=STRK:MEWNX:IT#ht_10141wt_1165 http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item;=320381449459&ssPageName;=STRK:MEWNX:IT#ht_10175wt_1165
Question by madmanmoe64 | last reply
Hey guys I'm needing the expert opinions of everyone here in the tech section. See I just mounted this 0.5 watt solar panel outside on a L bracket today (not just a couple tiny ones I pulled out of solar lanterns (does anyone want to see what it looks like mounted outside? I didn't think to take pictures until I got inside). Anyways, I've mounted it, ran the wire along the ground and in through my window (drilled a small hole below the window). Connectivity checks out good and I get about 20-21v and the full sun hasn't even hit it yet. The only thing is here though, this solar panel is meant as a trickle charging panel for car batteries and whatnot, and as such I only seem to be getting about 10-15ma (seriously wtf). I just resoldered this charging board from a solar lantern I had laying around, however I have a couple questions. I'm not entirely sure if this little board will handle the current/voltage (however it should as it's fairly low current from the solar panel) I've rigged up the board mostly like it was inside the solar lantern except longer/stronger wires. I have a switch on the positive line of the batt+ to the board. I soldered some thicker wires to the SOL connections on the board. Now I've seen a few of these and some are rather simplistic control boards and some actually have a bit of circuitry to them. This one appears to have resistors to current limit the LED (would be good so I don't blow it), however after following the traces on the board the led get's it's positive from that black transistor thing with 5 legs on it (what is that a power regulator?) The idea behind all of this here is that I can maybe charge up my cell with it or usb devices for example, but to have that come from a battery pack of AA's (to work as a buffer sorta-speak like a capacitor bank). I am a little miffled as how to make this work right the way I want it to. I would assume that once I get the battery pack situated I can disconnect the LED and use that connection for a charging cable, but then it would only provide power when theres no sunlight out (when you turn it on it turns the led on if there is no current coming from the solar panel). How can I do this guys I'm sorry to ask such stupid questions as I know to some of you's it's probably fairly mediocre but I'm a bit dumb.
Topic by Punkguyta | last reply
Do all panels in an array have to be matching watts, amps, or types (film, monocryst.,etc.)? I do know that volts are a specific- 12, 24, etc. Thankful for any info as I am new to this and am considering a wind and solar system. Just would like to know as I have access to some odd and end solar equipment. Thanks! DonnH
Question by DonnH | last reply
Hello Everyone, this is my first forum post!I had a question and couldn't think of a better place to turn to than this.Basically, I am constructing, or planning to rather, an outdoor picnic table. I want to add some gadgetry to it and make it more multifunctional. Sorry to be vague, but a lot of it is still being worked out and since I'm going to post the project on here anyway, I'd like to wait to present the entire project as a whole.My question involves the use of solar panels as a table top surface. I have a basic understanding of how to create a solar panel powered system (http://www.rain.org/~philfear/how2solar.html or https://www.instructables.com/id/Solar-Power-System/). But my question is this: does covering the solar panel with a piece of acrylic hinder its power collecting abilities? I'm thinking of covering the entire table top surface of my table with solar panels. Aside from the obvious downfalls of people using the table and blocking sun, I thought there would be enough time when its not in use to collect power. But obviously I can't have people eating right on the panels and damaging them. Any guidance would be GREAT! I just want to know if I should even entertain this design idea or separate the panels from the table altogether. Thanks!
Topic by jchorng | last reply
How can I charge 12V Li-ion or lead acid batteries using a solar panel? I also wish to interface the three, i.e. the Arduino, the solar panel and the battery, together so that the Arduino is basically driven by the battery but as the battery discharges, the solar panel would charge it. What circuitry do I need? Also tell the specifications of the solar panel.
Topic by DeepayanB2
I saw the power4home.com has simple solar panel instructions, but it is an expensive book. I did not see his dvd series on youtube, but if you can find that that seems easiest for me. If there is something close enough online free I will appreciate those links also. THANKS
Question by jbaker22 | last reply
In the quest to turn my garage 'green' I started with a purchase of a Sunforce 60 watt solar panel charging kit. I already own a 12v 15amp charge controller that I bought from Green Energies. The Green Energies controller is bigger than the kit supplied so I'm currently using this one. My questions; The Green Energies charge controller is supposed to have a blocking diode in it. When I put my volt meter on the leads going back to the panels (panels dis-connected, controller still hooked to battery) I'm getting approximately 10 volts. Should there be any reading at all? I went out this rainy morning to see if there was any power coming from my panels. To my surprise I read 8-10 volts (depending on cloud cover). This leads to my next question. It is worth adding a boost converter? I suspect the amperage would only be that of the incoming voltage, not what it is boosted up to.. Close? If my guess is correct, my 5amp (system at full power, rated at 24vdc), would only be about 1.6- 2 amps @ 8- 10 vdc. I also suspect the controller is stealing some amperage. 0.5 amps??? That should leave me with at least 1 amp coming in and giving me a 10 amp day. Not bad for a rainy day. Right, wrong or hopefully close? I'm not seeing my battery come up to full charge. I'm using a marine deep cell acid battery from my boat. Every 5 years I replace it to insure the boat will start as needed. Paddling that craft back to shore is not an option. One reason could be the fact of the battery being 5 years old and it will never get back to full. Second I believe would be the draw going back to the panels at night. Will the panels draw power?
Topic by olddawg | last reply
I want to get these 12v solar battery chargers they come with alligator clamps to hook to the battery. i want to get enough for 200 volts so how would i hook the solar panels in series, and do i need a controller for each battery? and how would i rig that up and how can I get it going into all the 12 volt batteries without any damage to the batteries etc. And can this be done for less than $400 if the solar panels are $30 each and the batteries are $14 each. THANK YOU!!!! THANK YOU!!!! THANK YOU!!!! THANK YOU!!!! THANK YOU!!!! oh and could you give me links for all the stuff I'm gonna be buying. THANKS!!!!
Question by jimmerforpoy | last reply
Hello everyone, I am doing a project for my class and it is a solar lamp project. I was wondering if anybody knew how to make a simple solar charging station. I want to use 3 of 1.5 W/4.5 V solar panel from radio shack as a charging station. I was just wondering how I would connect this together and charge the rechargeable batteries from the solar panel charging station.
Topic by RedXNaruto | last reply
Hi Guys, Would anyone able to help me understand what is the structure of the solar panel?? I am wondering what is that blue or even sometimes black sheet where a certain lines that look likes a aluminum or silver is? Is it the Silicon or not?? Guys help please. Thanks Best
Question by mitchiko | last reply
How can I connect these little solar panels from the tops of solar yard lights to make a small panel that might recharge a cell phone or such?
So...I've been looking at making a solar panel, but have no idea about where to start whatsoever. I'm a big "go green" person and want to try solar panels now(even moreso now that my electric company has gone crazy with their charges) I've browsed the instructables on making your own, but I get confused easily with the directions(Yes..I need it broken down like a 5 year old). I found an old glass storm window in my basement and was wondering...is it possible to convert that into a solar panel for starters? Or does it have to be a specific kind of glass? Apologies if this has been asked already, but I can't browse through the hundreds-thousands of posts to double check. Thanks in advance! -Xavier
Topic by XMReshadore | last reply
Question by engr rdx | last reply
Currently i am working on a 12V solar panel. the solar panel will be charging up the battery of 12V7AH. The problem is that by using the solar panel,the voltage often to be fluactuating down until 10V. How can i make the voltage remain constant at 12V?
Topic by haizad86 | last reply
I have a new video about equatorial mount for solar panels. If equatorial mount is turned slowly at the right constant speed, then the panels point at the sun all the time. I also have a diagram about something to get that constant slow speed. I have it done this way to avoid wind damage. I think if you did it this way and had a sump pump to pump the water back up every morning the thing could be automatic, cheap and very accurate. Brian
Topic by gaiatechnician | last reply
Hello Guys I have a question, If you connected 4 of 250Watts 24volts solar panel in parallel before connecting them to your charge controller, what would be the recommended blocking diode rating on each of these panels?
Question by EugeneT18 | last reply
I need a small solar panel to put on top of a tiki pole so I can have its eyes light up. It has one in it but has quit working trying to find one to replace it . It is approx. 2 1/2 in by 2 1/2 in do you carry such a thing or know where I might purchase one. Thank you for your help in advance Anne Domes
Question by kricketone | last reply
I have built a solar panel as a fun little project, now it has come upon a big problem. The solar cells that I am using seem to have a higher amperage output and a lower voltage output in high intensity sun while having a high voltage and low amperage output in medium and low intensity sun. This poses a problem as my batteries were able to recharge during late winter and early spring but now are not able to recharge when there is the most energy to be captured during the summer. The average voltage during high intensity is about 11 while the voltage during medium or low is around 12.5 and 13. I want to know if there is a way to create a transformer to step up the voltage or create a voltage regulator that can withstand 13 amps so the battery can recharge properly. A link or any suggestions would help.
Topic by menace
I'm putting together a solar powered cell phone charger and I need some advice from someone who knows a thing or two about photovoltaics. I've spent the better part of my free time the past three days or so absorbing as much information about electrical charging over USB and solar cell output as possible. I've seen a lot of helpful DIYs, and they would be great if I was following their method exactly. Unfortunately my project has serious space and power constraints. It's not for trickle charging an additional battery, it's for providing direct power to a USB phone. Here are my specifications. I need 5V and preferably ~500mA. Anything over 400mA should work fine. I *think* I've come up with a way to get that within my space requirements but I'm not positive it will work because I'm mixing two different size solar cells in one circuit. I can't seem to find a definitive answer as to whether or not this is OK, and what the results will be. I've attached a diagram of my plan. Two 5.5V/70mA solar cells wired in parallel with seven 1.5V/50mA cells. If I'm assuming correctly, this will give me an output of 5.5V (before the regulator) and 490mA. I don't know how or if the lower voltages of the smaller cells will effect the output. Can I use a combination of high voltage and high amperage cells in one circuit to get the output I need? I've talked with people in the Science and Tech forums and I've gotten a long way on the electrical circuit aspects and USB issues, but I'm hoping someone here will know a thing or two more about solar cells to tell me if my plan is viable as it is or if I will have to modify it. Thanks for any help.
Topic by HittingSmoke | last reply
I am looking to buy a solar panel, and need some advice on how to find a cheap panel to produce enough electricity to power my full house, for years to come.
Question by Perkinator | last reply
Would a magnifying glass/lens increase the amount of solar energy to a solar panel/cell? or would it just block the rays? i'm a bit confused because people haven't done it before and because people put glass (and silicon) in front of solar cells all the time.
Question by Houdinipeter | last reply
Dear All, We have a project in Physics and I was tasked to make a solar panel and I have to document how I made it. Can some one please provide me the spare parts needed and how to do it please.... Is there any parts that can be brought in the internet?
Question by mitchiko | last reply
Question by sher_ khan | last reply
I want to basically go green (partially for my house)I figured out the following (Kindly correct me if I am wrong):I calculated the KWhs in following way:(Watts x nos x hours)/1000 = KWhs / day (Correct me if I am wrong)LOAD CALCULATION:Room 1 - - 5W LED x 4 nos x 4 hours per day = 0.08 KWh / day- 3W LED x 1 nos x 1 hours per day = 0.003 KWh / dayRoom 2 -- 5W LED x 2 nos x 4 hours per day = 0.04 KWh / day- 15W FAN x 1 nos x 8 hours per day = 0.12 KWh / dayRoom 3 -- 5W LED x 2 nos x 4 hours per day = 0.04 KWh / dayRoom 4 - - 3W LED x 2 nos x 3 hours per day = 0.02 KWh / dayTotal Consumption per day = 0.30 KWhs / DayNow, I calculated the number of solar panel required in following wayOn an average of 5 - 7 hours of full sunlight / day. On an average in this situation a solar panel will product approximately 0.007 KWhs.Therefor I assume I will require 43 Watts of solar panel, by calculating :0.30 (Required KWhs ) / 0.007 (KWhs / watt of solar panel) = 42.85 Watts (Approx 43 Watts)AREA REQUIRED TO PLACE THE PANEL:I got to know on an avearage 1 SqFt is required for 10Watts of panel.Threrefore I shall require 4.5 SqFt area to mount it.Kindly update me if my calculations are correct.ThanksDevNet
Question by dufferdev
Hello I have a question. I am searching for a possibility to build a solar panel at home. I only find E-books that you need to pay for. Do you know if there are any free offers ? I mean something really simple, like these Ebooks because I am not really a Handyman. :D Do you know if this site is trustable www.selfmade-solarpanels.com and if it is worth to buy one of these Ebooks ? I really dont want to spend that much money but I am really interessted in this topic and I am not so good in searching the Internet for the right sources or collecting them in a way I can really build something out of this mess of Information at the end :confused:. thank you in advance
Topic by DariusN | last reply
Here I have 2 questions inside a question. 1. How to connect 2 or more solar cells/panels; series, parallel or some other, third way so....for example if I have 3 solar cells that give 5 Volts each, I connect them in some way and in the end have 15 Volt coming out... My question is hot to connect the solar panels to the the output described??? 2. Now that I have, for example 15 Volts coming out from these 3 small panels, I need to store that electric energy somewhere...So would a diode just to ,point, the electricity and a ultra capacitor to store it ,or does it have to be a circuit that involves rechargeable batteries and a special recharger circuit.
Question by comodore | last reply
Question by Bruster | last reply
So i'm making this solar powered usb charger, but i don't know too much about circuitry. I was reading around and drew a circuit in mspaint : http://img12.imageshack.us/img12/5403/circuitr.jpg. I'm just asking if this would work to charge the usb and the batteries(then the batteries charge the usb with no light). I also know that i need two diodes, one to prevent the batteries from discharging, and one to regulate voltage for the usb connection, could someone point out which these are? I'm using this solar panel: http://www.dealextreme.com/details.dx/sku.17439 But dealextreme has sketchy quality stuff, anyone know a safer place to buy a solar panel of like specs? Like amazon? or Radio Shack? After further inspection i realized that the black cord of a usb cable is ground. I'm not sure if that's right. How would the connection to the USB work?
Question by FireFreek | last reply
How can solar power recharge a mobile phone.
Question by dagyboy | last reply
Please I need your advice on a propose project in my office. we have an Inverter (Xantrex TR2424- 24V 2.5KVA) which charge rate capability of 70A. The Inverter battery bank is rated 1000AH 24V total ( 2V 1000AH x 12 in series). I am sure of 5Hrs sunlight a day. and I want my project to charge the battery at 60A rate per hour. Our DC-current consumed when on Inverting mode is 26A DC (Approx 3A-4A AC inverter output). Our ac load on the inverter output is around 540W. In my design as attached, each group of PV (4pcs in parallel) should produce around 30A). total amperage should be around 90A. since during the day (sunny) we will be draining 26A continously from the battery, deducting that from the total pv current, we should have around 64A left to charge the battery bank. My request: kindly look into my propose design and advice where am wrong or need correction/adjustment and recommend with your experience. I assumed a DOD of 60% on the battery hoping to charge the battery to full capacity within 5 hours of sunlight daily. we have standby generator which we can power on to charge the battery in situation where it is cloudy. Thanks for your anticipated recommendation & advice
Question by jisaac6 | last reply
Hello, I have 5V solar panel which will charge my 18650 3400mah Panasonic 3.7V battery. I will use Voltage step up to 5V and I don't know which diode should I use between panel battery? I have all these diodes. IN4148 Diodes IN4007 Diodes IN5819 Diodes IN5399 Diodes FR107 Diodes FR207 Diodes IN5408 Diodes IN5822 Diodes
Question by muratm7 | last reply
I am looking to output electricity from a solar panel made of tin foil. I don't mind how small the voltage is for, with enough time, I can make a massive amount of them and create the needed voltage. Is it even possible? I want to try using just basic materials like tin foil, cardboard, wire, tape, etc. etc. All replies are appreciated!
Topic by freethetech | last reply
Hi, I'm building a solar panel project that may use the charge battery and so on. As solar output is not consistent, I have a capacitor array to store charge before deliver it to the end devices. However if the solar output power is lower than the end devices(example charging phone) power load, it will probably on and off since the solar output is not enough. I would like to use by capacitor array to reduce the on and off rate by design a Schmitt trigger or perhaps it a flip flop circuit. For example if my Solar panel max voltage is 12v and my device using 5v thru a voltage regulator that need min of 6v. So I would like to design a circuit to do this 1) When capacitor array discharge to 6v, terminate the circuit to regulator. 2) Wait for the solar panel to charge the capacitor up to 12V 3) Upon reach 12 V, allow the current to pass thru regulator again. Repeat step 1 I tried so search Schmitt trigger circuit but I cannot find the suitable one as most Schmitt trigger is with a Vref and signal input. Since my voltage input(capacitor charging and solar panel) is variable, I do not have Vref. I still believe it can be achieved, perhaps my mind stuck at one concept only
Topic by SNC1 | last reply