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DIY Solar Panel Handphone Charger not working
So, I am currently making a diy solar panel charger with an 18560 2200 mAh battery, a cheap 5v 350 ma solar panel, a random diode i found on a toy electronic kit, and a step up 0.9v-5v to 5v chip thing. once i'm done soldering, i immediately put it outside of my house and let it charge. i left it for like 3 hours and i checked the battery using my multi meter and got 0.2v on the battery. it is not charging is it. can you guys help me found my problem ? oh, and here's some picture and a crappy drawing of mine
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Oh, by the way the solar panel gets 5.5v on sunlight and gets 0.6v with the battery connected to it. -
From my understanding those chips arnt used for solar. But it shouldnt matter. I have the same chips too.
I think maybe your solar panel is to weak to charge the battery. But Im not a expert on this matter I'd wait till Mike or someone like that to tell you what your problem is.
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Here is the chip on ebay
http://www.ebay.com/itm/141870592094...%3AMEBIDX%3AIT
Input voltage: 0.9V-5V DC
Transfer efficiency:96%(max)
With USB port
With working indicator light
with one AA battery power supply output current can up to 200~300mA,
two AA batteries to the output current of 500~600mA
Last edited by Guest; 05-11-2016, 09:09 AM.Comment
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your chip is not MPPT capable. It wants to have power from a voltage source, and a PV panel is a current source, so it nearly instantly overloads the PV, and crashes the voltage.
You have to have a panel capable of ovderproducing what the charger can consume.
Batteryis dangerously discharged, beware, it may ignite after being chargedgot 0.2v on the batteryPowerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-ListerComment
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This one is MPPT Capable. These Are the droids you been lookn for.
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Just found out that the diode is reversed. curse you diode!!!!!
So you're saying that i should strap 2 panels in series or parallel ? or buy a new panel ?You have to have a panel capable of ovderproducing what the charger can consume.Comment
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by the way, i followed this tutorial online expect i replaced the 2x AA battery with an 18650 battery.
src : www.Kipkaykits.comComment
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I think That since the battery your using is 3.7V and the panel itself is 4V. The panel isnt charging the battery.
On a sunny day that panel might not be producing exactly 4V.
And when charging a battery you need like 5.5 volt. So on a sunny day if you test and see if you making over 5 Volts then it maybe charging the battery then.
But im not the one you should be listening to Im a Newb as well with this stuff.
You need more Volts charging A battery of a 3.7 caliberLast edited by Guest; 05-12-2016, 12:00 PM.Comment
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I'd probably use something like a 1N4001 instead of a 1N4148. The 1N4148 is just a switching diode, it seems small for something like this.Comment
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as long as you understand the charging voltage and the discharge death voltages of the 18650 battery. You need to plan / design well to prevent a firePowerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-ListerComment
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on sunny day the panel produces 5v, but i just found out that the diode is broken. well... i made it like that. it charges the phone, but my phone battery's percentage is not going up nor down.20160513_132341.jpgComment
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Depends what type of phone you are trying to charge also! I know some phones that are smaller I can charge but bigger Iphones wont charge at all and stay the same. Maybe needs more amps im assuming
Im doing exact same expirements with this stuff. And connected a few devices to my solar chargers.
You should try charging something smaller.
Either way like Mike said.. you should try and understand charging voltage. And the best way to do that is to run tests with voltmeter attached.
First you probably want a battery charger, and check the voltage when battery is full. Then you know how much voltage it handles (I think)...
And next you want a voltmeter http://www.ebay.com/itm/361403560855...%3AMEBIDX%3AIT
That way you can watch as you power your battery and know by watching when its time to shut it off.
Last edited by Guest; 05-13-2016, 11:39 AM.Comment
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