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    Solar trickle charger

    I have about 10 portable panels, which i am trying to combine the total output, to charge a laptop battery. I know i can charge a phone, or samsung directly from sunlight (i believe its called trickle charging.) I wonder, can i so this with a laptop battery as well, and where would i get a usb male to acer power jack in?

    21 Comments

    Original Poster

    I wonder is this what i am

    looking for

    or perhaps

    this


    maybe this


    Edited by: "leeparsons" 23rd Sep 2016

    I'm not sure a 5v maximum usb cable would be suitable for a laptop which requires 19v? I'm no sparky so don't quote me on this but I think it could damage the battery OR it wouldn't even charge.

    Original Poster

    AStonedRaichu

    I'm not sure a 5v maximum usb cable would be suitable for a laptop which … I'm not sure a 5v maximum usb cable would be suitable for a laptop which requires 19v? I'm no sparky so don't quote me on this but I think it could damage the battery OR it wouldn't even charge.


    not one, but 8 of them combine is 40 w
    + 2 @ 6w Totalling 52w

    leeparsons

    not one, but 8 of them combine is 40 w+ 2 @ 6w Totalling 52w



    I get what your saying about the input stacking but only 5v can pass through the usb connector

    Original Poster

    AStonedRaichu

    I get what your saying about the input stacking but only 5v can pass … I get what your saying about the input stacking but only 5v can pass through the usb connector



    In that case, how does Ankara power usb hubs work then? Going on what you said about the limitations?

    Edited by: "leeparsons" 23rd Sep 2016

    If the finished system doesn't need to be portable (carrying 10 panels hardly sounds portable!) you'd be better off including a 12v (car/leisure) battery into the mix and using that as a power bank to then charge any connected devices from using proper adapters.

    Original Poster

    brilly

    do you know how electricity 'works'? you know v and w aren't the … do you know how electricity 'works'? you know v and w aren't the same?steer clear lee


    I do understand how it works

    Original Poster

    buttonpushervic

    If the finished system doesn't need to be portable (carrying 10 panels … If the finished system doesn't need to be portable (carrying 10 panels hardly sounds portable!) you'd be better off including a 12v (car/leisure) battery into the mix and using that as a power bank to then charge any connected devices from using proper adapters.

    Where would you get a usb to + - jack leads to then? Would I haft to hack it?

    leeparsons

    Where would you get a usb to + - jack leads to then? Would I haft to hack … Where would you get a usb to + - jack leads to then? Would I haft to hack it?



    To be honest, from your questions it sounds like this project is probably a little beyond your abilities - playing with electricity is not clever when you don't know what you're doing.
    From what you say it sounds like your panels are purpose built with USB output... they are not designed to be hooked up together and output higher voltages (USB is max 5v as already stated).

    Not the best way but you could buy a 5v to 12 step up inverter and hack off the plug. Then buy a car variable voltage laptop charger and connect up to the step up inverter.

    buttonpushervic

    To be honest, from your questions it sounds like this project is probably … To be honest, from your questions it sounds like this project is probably a little beyond your abilities - playing with electricity is not clever when you don't know what you're doing.From what you say it sounds like your panels are purpose built with USB output... they are not designed to be hooked up together and output higher voltages (USB is max 5v as already stated).


    see quote in comment #7
    i agree but some people dont appreciate advice, playing with electricity isn't a game

    Original Poster

    buttonpushervic

    To be honest, from your questions it sounds like this project is probably … To be honest, from your questions it sounds like this project is probably a little beyond your abilities - playing with electricity is not clever when you don't know what you're doing.From what you say it sounds like your panels are purpose built with USB output... they are not designed to be hooked up together and output higher voltages (USB is max 5v as already stated).


    To be honest with you, i understand what you are saying. But my first set of panels i purchased, are manufactured by easyacc. These have just a simple usb female socket and thats it. Where as my newer ones dont. So i can see there would be limitations with these. Which is a shame as i have 8 of the, and i wanted to produce allot of electricity from them all

    Edited by: "leeparsons" 25th Sep 2016

    leeparsons

    To be honest with you, i understand what you are saying. But my first … To be honest with you, i understand what you are saying. But my first set of panels i purchased, are manufactured by easyacc. These have just a simple usb female socket and thats it. Where as my newer ones dont. So i can see there would be limitations with these. Which is a shame as i have 8 of the, and i wanted to produce allot of electricity from them all



    So how we're you planning to connect them together? To do it properly you need to be removing the crappy USB connector and then connect them together properly using solar cable (as the current produced will be more). You do know then that the more connections and cables there are the more losses in current you will suffer? I'd be amazed if your 52W array produced anywhere near enough current to charge a laptop effectively given that we're heading into winter with less strength and duration of daylight.
    I run a 165W panel through a charge controller all year to power auxiliaries in my camper van and in winter I'd be lucky to get 30W of power to work with.

    Original Poster

    buttonpushervic

    So how we're you planning to connect them together? To do it properly you … So how we're you planning to connect them together? To do it properly you need to be removing the crappy USB connector and then connect them together properly using solar cable (as the current produced will be more). You do know then that the more connections and cables there are the more losses in current you will suffer? I'd be amazed if your 52W array produced anywhere near enough current to charge a laptop effectively given that we're heading into winter with less strength and duration of daylight.I run a 165W panel through a charge controller all year to power auxiliaries in my camper van and in winter I'd be lucky to get 30W of power to work with.

    To be honest i didnt think. I just thought that was a god deal for a 5w panel. Assumed i be able to combine the power, with a cable splitter, and do the same for rest of the panels. Of course i realise there maybe some loss. Again, i didnt realise, because of my previous panels, and assumed they would be similar. I could hack them. Else I could get some little power banks, and just got with that.

    On Ebay for £1 from China you will find a USB Li-On charger pcb. Hook your wires up to this and it will regulate the voltage.

    Original Poster

    I am thinking it might be just easier and less hassle just to get a 4 power banks of either 2*aa or 4*aa. Then when they are charged, connect the spliters to them, to charge a device

    leeparsons

    I am thinking it might be just easier and less hassle just to get a 4 … I am thinking it might be just easier and less hassle just to get a 4 power banks of either 2*aa or 4*aa. Then when they are charged, connect the spliters to them, to charge a device



    Simply using 'splitters' to join the power banks up to give one USB connector to attach to something will not work.

    What 'problem' exactly are you trying to solve?

    Original Poster

    buttonpushervic

    Simply using 'splitters' to join the power banks up to give one USB … Simply using 'splitters' to join the power banks up to give one USB connector to attach to something will not work.What 'problem' exactly are you trying to solve?


    To produce more watts to power devices.

    As I said previously, i have combine two easy acc solar panels rated at 6w per panel. I have been able to charge my note of 12000mah within a ten hour period.

    The intial idea was to do the same, but with 8 panels atleast. Thus being 40w. I did not realise to think about the junction box, would be different to that of easy acc panels.

    I am just trying to be more green.

    I am guess the easiest solution would be to get a USB 18650 Power Bank Battery Box. If i went down that route, where would be the best value to purchase batteries then. I am guessing like most thigns on ebay, you cant trust the there mah on there. So I wonder where would be the best value to go. Also are the battery boxes off ebay, any good then?

    leeparsons

    To produce more watts to power devices. As I said previously, i have … To produce more watts to power devices. As I said previously, i have combine two easy acc solar panels rated at 6w per panel. I have been able to charge my note of 12000mah within a ten hour period. The intial idea was to do the same, but with 8 panels atleast. Thus being 40w. I did not realise to think about the junction box, would be different to that of easy acc panels.I am just trying to be more green.I am guess the easiest solution would be to get a USB 18650 Power Bank Battery Box. If i went down that route, where would be the best value to purchase batteries then. I am guessing like most thigns on ebay, you cant trust the there mah on there. So I wonder where would be the best value to go. Also are the battery boxes off ebay, any good then?



    No you misunderstand me. What is the application

    ie I run on solar because I am away in a camper for 4-5 days at a time and have no access to an electricity supply.

    Why did you buy solar panels... yet now think you might use powerbanks - how are you going to recharge them and how often? What is YOUR application? There may be a better solution if you let us know?

    Original Poster

    buttonpushervic

    No you misunderstand me. What is the applicationie I run on solar … No you misunderstand me. What is the applicationie I run on solar because I am away in a camper for 4-5 days at a time and have no access to an electricity supply.Why did you buy solar panels... yet now think you might use powerbanks - how are you going to recharge them and how often? What is YOUR application? There may be a better solution if you let us know?


    Charge the power banks from solar power, harness by th solar cell i have

    Good luck. If you ever find a way of connecting the laptop that is... are power bank not USB output? You'll need more than the 5v that the USB allows - as already mentioned at least twice.

    I can't help you any more as we're just going round in circles.
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