Charging a Car Battery with a Solar Panel and Charge Controller
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- Опубліковано 30 вер 2024
- If you connect a solar panel directly to a car battery, it will eventually overcharge the battery and damage it. That's why you need to use a solar charge controller. This is my own design using the latest microcontroller and MOSFET circuitry. It consumes less than 1mA (that's very little) and has a neat little blue LED that tells you the battery voltage. It can also be connected in various different configurations so you can do clever things like charge two batteries from one solar panel. You can get the PWM5 from www.256.co.uk
*The solar **Generater.Systems** E300 is a great product . It does everything well. Great job, Jackery.*
my solar charger is 12v 1.5w and my car battery is a 650amp battery do i need a controller for this
what is solar watt
Making use of the ua-cam.com/users/postUgkxcJ22tnHH9l1vjdIdEIG27iOG55P7LXI8 reconditioning plan, I just saved 2 auto batteries from being completely junked. The guides were very simple to follow. I wish I would have found this years ago! You may use the guide to recondition any battery type
Basically saying the battery is dumb. It doesn't know how to stop charging if directly connected to a solar panel of any size wattage. By using a charge controller to charge a battery, the charge controller regulate the proper voltages to charge a battery. Then shuts off when it is fully charge. Just like a smart charger would do.
A simpler way to think about it is like this. The battery, or storage device, is regulated to draw and receive up to 12v. A solar panel of that size will likely give more than 12 volts so to charge the battery safely, a circuit is put in-between the two connections to prevent the battery from receiving too much power. Too much electricity at once will cause the battery to overheat and meltdown.
Thank you! Exactly what I wanted to find out. perfect, basic yet to the point.
The charge controller protects the battery so you can leave it set up like this permanently. You can also connect an inverter to the battery (and use it). You can also start the car engine. Everything can be left connected up.
Small system with car battery
ua-cam.com/video/hsME1zoCcWg/v-deo.html
Thanks I have some parasitic electricity draining my EX rig’s batteries, instead of finding it am adding solar to it lol I have to much shit hooked up to it, it could be anything at this point at how old the ex is
What will be the fasted way to charge a car battery using solar panels and how many watts of a solar panel do i need to fully charge a car battery ?
Let's say you use an 80W panel and that you get 5 hours sunshine a day. You could run that 800W appliance for half an hour. Factor in losses, and you might get 20 minutes. 800W at 12 Volts is 67 Amps so that's about 24 Amp hours. So the battery should be at least 50Ah.
If the battery is large and the panel small you probably don't need a charge controller. But a small battery (like a small SLA gel battery) could still be damaged by a 5W panel.
Your right it would take many hours like a full week before it gets anywhere near to. Damaging the battery . The battery is miles bigger than the small solar panel I have a 30 watt solar manner charger and my battery has never been damaged so I think u would need to leave it on a whole week to damage the battery as the solar panel is not powerful enough to damage the battery . I've been charging my batteries now for around 4;year's I only leave them on for around 12 hours that's all
If your country has plenty of sunshine, a solar panel is a great way to keep your battery charged. If you use a small panel (less than 10W), you can connect it directly to the battery, but a bigger panel will need a charge controller to prevent damaging the battery.
Hello, thanks for the video. I have a Q, i just want to keep my car battery topped up as my running is low. Mine is a 45ah Amaron battery, would the below spec solar panel without controller be ok to just keep the battery from draining? :
Max Power(Pmax): 5Watts
Max Power Voltage(Vmp):8.7 V
Max Power Current(Imp): 0.58A
Open Circuit Voltage: 11V
Short Circuit Current: 0.62A
Tolerance:± 5%
Weight: 0.2kg
Unlikely. The switching device is a MOSFET which is more likely to go open circuit in an overload condition. If the software freezes, the charge pump stops running and the MOSFET will turn off. Also, a watchdog timer reboots the program. There are a number of safeguards against this happening.
Sorry, I didn't really answer your question! Solar is almost certainly going to be more effective than wind unless you live on an isolated farm on a hilltop. Domestic scale wind turbines are notoriously ineffective, generally because they're not placed high enough. No-one's going to be very pleased if you put a wind turbine on top of a 100ft pole in your back garden. Having said that, there's a small marine turbine (50 to 100W) attached to a nearby house which always seems to be spinning.
How long does it takes to charge the battery?
eBay. Search for "CCTV 2.1mm".
Be careful here...this video is potentially misleading. If you consistently charge at anything less than 13.8V your battery will suffer slow death by sulfation and lose capacity. Nor is charging to 13.8v ideal. Make sure your charge controller takes the battery to around 14.2 V and then reverts to a float charge of 13.8V thereafter.
thats not correct either, my agm 12v battery likes 14.8v, and this is fine anything over 13v is charging
LOL. Too many Brainy in here, no Brawny. Each to their own knowledge bros.
PWM5 controller from website mentioned in the video description - connectors from eBay
Very simple and short video yet very informative. Good for those starting to learn about solar charging. Thank you for this video sir
Wind generators need a system that stops them running too fast when the battery is fully charged and not taking current. Either a shunt type charge controller (which shorts out the generator) or a controller with a dump load (which diverts current to a dummy load - often a heating element) must be used with a wind turbine. My controller is a series type (which goes open circuit when the battery is full) so it only works with solar panels.
If the kit has silly little solar panels (1 or 2 Watts), you probably won't need a charge controller (unless the battery is also very tiny). If it has a proper solar panel (10 Watts or more) it should be supplied with a charge controller or you risk damaging your battery. The charge controller fits between the solar panel and battery - you don't need anything between the battery and the inverter.
Finally a video that explains this in plain english lol Thank you!
The alternating current battery hasn't been invented yet.
Yes - just like in the video. Solar panel, charge controller, battery, fan (add a switch if necessary).
The panel in the video is 20 watts, but I'm using bigger panels now. The PWM5 controller can handle any panel up to 100 watts. Yes, you can leave the panel connected via the controller to the battery indefinitely.
How many volts is the panel?
Where can I get one of these? I just forked over a chunk of change to replace my dead car battery. Great concept.
Very informative to us novices starting out, thank you.
Pwde po bang e seres ang solar battery at car battery
Four 12v batteries in series gives you a system voltage of 48 volts. I only work with 12 volt systems.
why do you say at 14v it's bad for the battery ? when a battery is being charged from your car alternator it hits that voltage
Your car also feeds from that though reducing that. Ubless you akways drive with no stereo or aircon on etc
Battery charging voltage anything between 13.8V-14.4V(14.7V some of new cars )
You're wrong. 13v is a safe voltage to hold a lead-acid battery at. Also, solar power isn't constant - the sun disappears every night for a few hours.
Google's translation is "No, that would be stupid to break ammeter poked, all would have been clearly".
36-cell solar panels (the type designed to charge 12v batteries) have an open circuit voltage around 22 volts, easily enough to overcharge the battery. Why the high voltage? So that they also work when the sun is low in the sky or obscured. 14v solar panels are not common (you'd probably have to make your own) and would only work under full sun.
It won't work. Unless you're planning to run the 'heating appliance' for no more than a minute every hour, you won't have enough power. Also drawing 3.5kW from any 12v battery will destroy it pretty quickly.
Standard techniques are peturb and observe and/or hill climbing. The maximum power point moves around - it's not fixed like a regulated output voltage voltage. What interests me is whether the maximum power point coincides with maximum battery voltage. If it does, the design could be so much simpler. Thanks for the interesting question.
I'm just seeing a poor match between the low power of the solar panel and the very high consumption of the water heater. Either use more solar panels or use a lower wattage heater.
I'd like to use a solar panel on the roof of a van to charge a separate battery just to power a fan at night. The purpose is just to cool the car enough at night so I can sleep. It doesn't have to be a car battery - a smaller one would do. Do you know of a way to do that?
Thanks for sharing and explaning why directly we shouldn't connect battery to solar panel. 14 years later too this video is clear and is giving good information.
I am planning to use a 55w 12v mono perc panel and a PWM solar charge controller for making a trickle charger for my car. it parked most of the time and gets discharged
Let's say you discharge the battery 33% per day - that's 50Ah = 600Wh @ 12V. Now let's say you get 8 hours sunshine a day - 600/8 = 89W. De-rate the panel a little to allow for transfer losses and I'd recommend a 100W panel. If you take less energy from the battery each day, you can use a smaller panel.
Only if the solar panel is small - 5 Watts or less.
Look I charge my battery straight to my solar panel for the last 7 years! So I don’t think so! Y’all lie just to sell products. Need a real honest help by pass all the money making videos. Anyone out there know how how to add solar panels so I can charge my battery faster. Basically I need to know if I need stronger gauge wire or not, otherwise I’m good . Can’t find anyone who knows.
Fascinating question. MPPT only applies during the bulk charge phase, absorbtion and float require regular PWM with battery voltage monitoring. MPPT seeks to maximise solar panel power, so you need to measure panel voltage and current and multiply them together. A standard buck converter regulates output voltage, but that's not required for MPPT so you'll need a non-standard DC/DC converter - you may have to design it yourself. You'll need to find the maximum power point which isn't fixed.
The PWM5 controller handles 6A so can be used with solar panels up to 100W. You will need crocodile clips, cable, connector block (chocolate block), connectors for whatever is on the end of the solar panel cables and optionally a fuse.
Hello im very interested in your video I guess you got to see it to believe it. My one question is how long can you leave it in that setup for? And if was to hook up an Invertor to the car battery is it possible to use the battery while in that setup? I have all the supplies needed just need the reassurance to proceed.
All car batteries are rechargeable
you don't need a controller if you are charging with a solar charger of 4 watts...
I have heard it is safe to connect this way using a 1.5Watt Trickle charger and wont hurt the battery.
What will be the fasted way to charge a car battery using solar panels and how many watts of a solar panel do i need to fully charge a car battery ?
Not sure if you are the same person or not, but a word-for-word transcript can be found here: cleanenergyprojectnv.org/how-long-to-charge-12v-battery/
could the charge controller ever fail in away that the battery would get direct current again from the solar panel
Do not use kings mppt on solar to normal car batt I killed my ride on and my ranger battery's using this cheap shit
Yes it can - see my video "Charging Two Batteries with one Solar Panel"
I already did that directly does my battery not working anymore
Hi, I don’t know why my battery is not changed fully.
My wall charger charges at 16V. It did not destroy batteries.
A certain amount of bubbling is good - it stirs up the acid preventing layers of different strength acid forming (stratification). Excessive bubbling is undesirable because water is lost during the process. Charging voltage can be high for a while to speed up charge absorbtion, then the voltage should be lowered to minimise gassing and consequent water loss.
Add solar charge controller to your comment area n get affiliate money from amazon.
my car's battery is 12V-70AH. I have purchased a solar cell panel 12V, 1.5W-100mA for trickle charge (item2.gmarket.co.kr/Item/detailview/Item.aspx?goodscode=365952259).
In case I don't use my car for 1 week, the battery is running out that cann't make the car engine starts, how long does it take to fully charged my car's battery if I use this panel ?
I cann't measured the current output from solar panel, but as it claimed on the box that the output directly from the panel is ~19V/250mA in highly sunny condition, and stable at ~13.7V/100mA after the charge controller.
So, as my calculation: 7000 mAh (battery) / 100mA (output of solar pannel) =70 hours, then / 8hours per day on average, it comes out ~ 8,75 days for fully charged, is it right ?
This video should help answer that: ua-cam.com/video/iPjKCiv61l4/v-deo.html
Hello, I hope you don't laugh and have the time to answer my......question. I have an electric bicycle with 4x 12v 17ah sla battieries and I was wondering if there is a way to solar power these while I ride.? Would the panels be too big? Is it even possible? Litium ions are too expensive for me and these 4 batteries cost $200 dollars only.
What type of solar panel you got there mate. Brand and model?
I wonder how the grass is getting on?
Anyone for tea?
What size panel r u useing?
Thank u. 👍
if the voltage of the panel drops below the charging voltage can it get damaged by the battery?
What's the fastest way to solar charge a car battery ?
What if your battery were connected to your car and alternator? Any danger/risk? Does that charge controller have a diode to keep the panel from draining your battery at night?
I have this 200watt, 18v, 6amp max flexible solar panel I want to mount on my van. I would like to install a 20amp charge controller that has 2.4v USB ports built in. But I have a 4amp 12v fan Id like to run during heave sunlight.. but I've been told I need a stead 12v source.. Can I use my vans 12v 70AH 120RC primary starter battery as part of my simple solar setup? I don't anticipating ever draining the battery below 11v.
I upgraded the alternator in my car to run at 15 volts, and most cars run at 14 volts.
Can one go from a charge controller to the lighter
How can I now that my battery is damaged
It's a nice battery desulfator right ther if stills at 16v at low amp like this 10w panel u will be saving a lot of money reconditioning old batteries and saving money not even need to buy a desulfator device!
The amount of stupid comments on youtube is too dam high
My panel is just 12 volts from a electric fence system. It won't get above twelve but it will bring it up to at least 8 or 9 volts which is good in a jam.
How many watts is the solar panel thanks
would this work in a car thats not used often? would the alternator cause problems for this setup when the car is started and the voltage rises to 14.4v?
With a good charge controller it is built with smart technology protections. It will accept 12 to 24volts charges 1.5amps or 50amps or higher. The controller will regulate according to the voltages it detects. Not over feeding not under feeding.
The answer is No. But consider how you plug the batteries in Parallel Positive to Positive, Negative to Negative. Combining 2 batteries. Which read the voltages as 1 battery. The other means of connection is in Series which will joint 2 battery together to read 24+- volts. So that is said. How you connect the Positive and Negative cables from the charge controller will determine the rate it charges and which battery will charge first ur both charge at the same time.
Can I connect the solar panel directly to the battery if the battery holds very low charge, then later add the charge controller when the battery charge is high enough?
No
juliannnn! very gooood, can you please send me the link for that specific charge controlet, I. a big fan.
I have off grid solar system with car battery now.
Can you plug a 110v power supply into this to charge the battery instead of using a solar panel?
I’m making a Bluetooth speaker and I need to be able to charge the 12v battery that’s built int the box
I really find this useful. Very useful and easy to follow. But what's the the red and black clips cable called? It will be nice knowing what it's called before going to look for it
if you have 8 solar pannels and 10 car batteries.... in your home and that device like breaker... is it possible to operate your home... when you consume 24hrs of aircondition, and refrigerator or is it farfetch...
just to let you know 14.6 volt is not going to destroy your battery i can see around 15 v but not 14.6
can this solar panel recharge a XS Power D3400 XS Series 12V 3,300 Amp battery
Hello guys, I have 24v 350w battery can I use 12v 100w solar panel plzzz give me any suggestions
What if the battery is connected to a significant load? For example, a continuously running motor. In this case, to get maximum going into the battery (to offset that load), wouldn’t it be better to simply not use a charger?
Do you have to remove the battery caps when charging like you should when you use an electric battery charger.
i have a battery trainer for car battery at home and i have a 12v to 220v converter for my sigarettelighter in my car, if i hook the battery trainer to that converter in my car while driving does it recharge my battery then ? i think so but not sure, been thinking about these solar pannels as well didnt know about that charge controller, very usefull video !!!
Could you use the solar panel to run a alternatir system that charges the batteries that are in use? An if so would i need a batter for the alternator system. Also would i need a surge protector/30min apc between the batteries and the appliances?
Hi I am going to buy a 120 watt to 200 watt solar panel to put on my camper trailer would I be able to use the charge controller also would the solar panels keep my battery charged and can I just leave the charge controller on so when day light comes it will start charging again what I used during the night.
Regards Farmer
Once your battery is safely charged, is there a specific component that serves as a "sleep button" so you radio or light stays on for ONLY 1 or 2 hr or say 20 minutes?
A brusker or street entertainer couldn't facinate people as much as seeing and understanding actual basic technology, it's shocking...lol- what is possible.
I have a this exact set up after watching this video I went out and got all of the items shown here even the little male and female power connectors. I have a car battery that is a bit low only about 11v so i plugged in my panel and charge controller and waited all day for it to be charged at like 12.5v so I could use my inverter on the battery. But this set up dose not seem to work it dose not charge the battery I have asked others and they tell me this whole set up is wrong! please advise!
I'm sure having a car battery on the ground isn't doing the battery any good either.. you need a base under that battery to separate it from the ground...
If the panel is to strong
[I`m smilled.] Your translator was a little incorrectly expressed, having translated my slang. I will a little tell in a different way.
It was necessary to measure simply current of a charge and to show it on the device, then it would be evident, what current is received by the battery.
It would be quite good to specify the area of a solar element.
Nevertheless, thanks for the answer. From me in any case "like" for video.
HI JULIUS!!BIG FAN OF UR VIDEOz!!!I WAS JUST WONDERING... IF I WANTED TO CONNECT 2 TO 4 BATTERIES TOGETHER WITH SOLAR PANELS... WOULD I STILL NEED THE "solar charge controller" BETWEEN PANELS AND BATTERY?PLEASE FORGIVE ME IF YOU HAVE POSTED A VIDEO ON THAT AS I WILL CHECK RIGHT AFTER POSTING THIS!!!THANK U
i live in places where there is power for just 4 hrs a day..so itsn't enough to charge my battery which is connected to my ups... can i charge it using solar panel?? mY battery is a 12v leadacid With 100AH ..PLS REPLY
Can a Lipo battery charged and discharged at the same when connected to solar cells via buck booster
Julian, im doin a solar water heater project where im using solar panel to charge the current for my water heater appliance.A heater consume power is 3.5kW so i plan to install 50W panel to car battery with controller in middle and an inverter to convert the dc to ac current for heater appliances,it is good enough or u would suggest some better rating for each component? also, it is ok to use car battery as shown above rather than deep cycle battery for long term as im using solar panel project?
I managed to over load battery even with charge controlled wired in would it be because i didnt have a dump load wired in ?
can you tell what happens when the battery is fully charged and you still have the charge going in?
Would you need a charge controller for trickle solar power charger as well? I am new to solar energy panels.
Where can I buy one please
thank you..but i wanna know how many watts of solar panel should i buy to charge my 150ah battery...and as u said i will use charge controller... i live arid regiongs do i dont have to worry about sunlight..:)
So basically how to solve it? should i use a boost converter or current transformer to hike up the power to a suitable value before inverting it? or any idea u would suggest to solve this project? thanks....
If using a solar panel to charge on maintain your vehicle, would you have to take it off at night