Can A 50W Solar Panel Charge A Dead Car Battery?

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.natesdiyso...
PDF: www.natesdiyso...
** 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/...
Renogy 100 Watt 12 Volt Monocrystalline Solar Panel (Compact Design)
renogy.sjv.io/...
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/...
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...
Current Connected: Ready-to-Run Solar Kits and Victron Equipment
currentconnect...
SanTan Solar: New and Used Solar Panels:
www.santansola...
SFK: Quality DIY Battery Enclosures and Ready-to-Run Batteries:
6% Coupon Code: NATESDIY
www.sunfunkits...
** Contact Information **
I am not available for personal solar system consult!
Email: [e-mail]
Website: www.natesdiyso...
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