Can A 50W Solar Panel Charge A Dead Car Battery?
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- เผยแพร่เมื่อ 3 ส.ค. 2023
- In this video we charge automotive (lead-acid) batteries with several different solar charging solutions. We use a 5-Watt MPPT Solar Battery Maintainer as well as a DIY solution using a DC-to-DC (BUCK) converter. We will also use a waterproof (mount anywhere) - 10 Amp MPPT Charge Controller designed for vehicles made by LensunSolar.
I do a lot of off-roading and I do not want to get stuck out in the desert with a dead battery. The idea is that I would be able to charge my vehicle battery in under 2 hours using a roof-mounted 50-watt solar panel. Be on the lookout for a future video where I mount this system on an off-road vehicle!
So, I would not recommend using a buck converter as a permanent battery charger as it is not intended to replace a battery charger. I wanted to show the versatility of a buck converter and how it could be used as an emergency solution. However, I did find some buck converters by XWST that do output constant current as this is what you want in battery charging, but the voltage input ranges were not ideal for solar. I have provided a link to the PDF of all their units. An MPPT charge controller is simply better at the job.
Enjoy!
Want to Learn More About Buck Converters - See My Website
www.natesdiysolar.com/project...
PDF: www.natesdiysolar.com/pdf/cat...
** Affiliate links **
LensunSolar 10A/130W MPPT 12V Bluetooth Solar Charge Controller (55V VOC MAX) *
amzn.to/3QvTXUP
NOTE: These panels will work with the mini MPPT controller. Do not exceed 130W for the 10A unit. There is a 20A version that will take up to 260W of solar. There are options for 12V or 12/24V batteries. Use NATESDIY at checkout to get a nice discount!
Renogy 50 Watt 12 Volt Monocrystalline Solar Panel *
renogy.sjv.io/OrKv1Z
Renogy 100 Watt 12 Volt Monocrystalline Solar Panel (Compact Design)
renogy.sjv.io/zNb5j0
Renogy Solar Panel Z Brackets for RVs and Trailers
amzn.to/47NJ6vG
Renogy 10-Watt Portable Solar Battery Maintainer (ONLY good for keeping battery topped off)
renogy.sjv.io/R5nNRX
Key topics included in this video:
0:00
1:10 - ATV Battery 5-Watt MPPT Maintainer/Charger
3:40 - ATV - BUCK Converter (DIANN)
7:11 - ATV - BUCK Converter (XWST)
9:22 - UTV Battery BUCK Converter (XWST)
11:38 - ATV - 10A MINI MPPT Charge Controller
14:03 - Load Function - 10A MINI MPPT Charge Controller
16:52 - MPPT VS. Buck Converter Efficiency
17:36 - Conclusion
** Reputable Companies (affiliate links) **
AmpereTime/LiTime: Great LiFePO4 Batteries
3% Coupon Code: NATESDIY
www.litime.com/?ref=XBwnqBoJf...
Current Connected: Ready-to-Run Solar Kits and Victron Equipment
currentconnected.com/?ref=lbh...
SanTan Solar: New and Used Solar Panels:
www.santansolar.com/?ref=8496...
SFK: Quality DIY Battery Enclosures and Ready-to-Run Batteries:
6% Coupon Code: NATESDIY
www.sunfunkits.com/
** Contact Information **
I am not available for personal solar system consult!
Email: nate@natesdiysolar.com
Website: www.natesdiysolar.com
FTC Disclosure Statement and Disclaimers:
This video is NOT sponsored. Some product links are affiliate links, which means if you buy something, We'll receive a small commission.
Videos on this channel are for EDUCATIONAL purposes only. Electricity is dangerous and can kill. Please use common sense.
Nate's DYI Solar is a participant in the Amazon Services LLC Associates Program, An affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com - วิทยาศาสตร์และเทคโนโลยี
I found this really cool and easy to use mini MPPT charge controller. it's waterproof and is very durable, light and compact, and has Bluetooth! All that for only $79! It only accepts up to 130W of solar input and outputs 10A, but it's perfect for keeping your vehicles battery topped off or emergency battery charging.
Enjoy!
Affiliate Links:
* Denotes items used in video.
LensunSolar 10A/130W MPPT 12V Bluetooth Solar Charge Controller (55V VOC MAX) *
amzn.to/3QvTXUP
NOTE: These panels will work with the mini MPPT controller. Do not exceed 130W for the 10A unit. There is a 20A version that will take up to 260W of solar. There are options for 12V or 12/24V batteries. Use NATESDIY at checkout to get a nice discount!
Renogy 50 Watt 12 Volt Monocrystalline Solar Panel *
renogy.sjv.io/OrKv1Z
Renogy 100 Watt 12 Volt Monocrystalline Solar Panel (Compact Design)
renogy.sjv.io/zNb5j0
Solar Panel Mounting Curved Z Bracket (4x)
renogy.sjv.io/LXmyDV
See video description or my website for more options!
Add a blocking diode between the bucking converter and battery. This prevents the battery from backfeeding and possibly damaging the buck converter.
Buck converters seem to be a pretty handy device to have around the house. I found this voltage adjustable buck converter on Amazon “DZS Elec DC-DC Buck Boost Converter” that might meet your needs.
Nate, on a slightly different path, have you had any experience with ZNShine brand solar panels?
I have not used those solar panels.. why do you ask?
@@natesdiysolar A1Solarstore (they have a local Las Vegas distribution center where you can pick up your on-line order) has a ZNShine 370 Watt panel on special for $126.54. This sounds too good to be true. It looks like they are new panels.
Would be nice to see buck converter, and behind it PWM charge controller, it would be very close to mppt efficiency if buck converter will be little big higher than battery voltage.
Like connected one after another?
@@natesdiysolar Yes, if voltage of panel and voltage of battery are far away each other, pwm suck, buck converter theoretically should improve efficiency of pwm controller. MPPT controller is basically buck converter, pwm controller, and IC unit with algorithm to achieve the most power.
Would there be any benefit to adding a power capacitor (1 farad) to a dc to dc converter configuration and/or lipo4 100ah setup?
Iv heard of people pairing capacitors with LiFePo4 batteries to create CCA ability for starting but I have not tried myself. I think Dakota sells a battery with a built in Capacitor for CCA ability
@natesdiysolar Thanks, I have one left over from a previous audio system and was thinking about incorporating it, if there was a benefit, and it not just acting as a parasitic draw.
@@bigdaddydoitall lmk what you find out
@@natesdiysolar will do
Don't think its the buck converter or panel is an issue charging the ATV battery. If its already below 11.5 volts and sat like that for any time the battery died and wont take a charge anymore. After charging a battery wait 5-10 minutes then check the resting voltage, dead batteries can show a surface charge with normal voltage but putting a load on it shows the capacity. For an emergency though it could save you, like to see the experiments getting the brain thinking on possible projects!
wxst came with a 1,5ah and 12(9 to 14v) and convert it to 13.8v constant...!!! was my smartest buy!!!! even if a batt is less , it kills it to fix the another battery !!! 30w panel goes to cheap pwm
Aww man that would of been a good idea to try. I should of bought a cheap pwm and compared efficiency of all three devices. Would be sad if a buck is better than a pwm lol
@@natesdiysolar Depends of input voltage(solar panel). If you charge 12V battery with 60V solar and pwm, it will lose against buck converter.
What is the highest watts in 12v panel I can buy to charger my 12v car battery very quick ?
Note : price don't matter .
It will depend on the controller you use and how much space you have on your car roof if you plan on mounting on car. Remember there will be wind drag etc.. but using the controller I used it will take 100w panel @ 8 amps I'm guessing it would take 30 to 45 min to get enough charge to start.. hope that helps
@natesdiysolar is 100w panel the highest watts I can use in 12v panels ?
@@sabahameer2620they have 200w "12v" panels..
@@natesdiysolar is the 200 w is the highest ?
@sabahameer2620 not 100%
Sure, but it's the highest I have seen. But you should know there is not really a such thing as a 12v panel. They are actually 24v but used in 12v systems. You can technically use any size panel as long as you have room. Take a look at santan Solar. A 250w panel will produce around 37 volts. 335w will product 45v or so. Sure, they have tiny 12v specialty panels but have very limited use
i almost gave up hope on the little battery sheeeesh i guess you shouldn't let the voltage drop below 12 volts.. yikes
Right, lol. I purposely drained it to zero as an absolute worst-case senserio. Thanks for watching!
@@natesdiysolar ah ok y/w
Always water your batteries 😂…
50w might be to much for that battery I think. Maybe 20w panel would be more suitable to not over heat battery and possibly damage.
Yes, but the charge controller should control that. .