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expiredNavy-Wife | Staff posted Jul 16, 2025 01:58 PM
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expiredNavy-Wife | Staff posted Jul 16, 2025 01:58 PM

ECO-WORTHY 10W Solar Car Battery Charger Maintainer

+ Free Shipping

$22

$43

48% off
Amazon
21 Comments 74,455 Views
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Deal Details
ECO-WORTHY US via Amazon has ECO-WORTHY 10W Solar Car Battery Charger Maintainer on sale for $42.99 - 50% off when you visit the promo code page to activate (or apply code VYJGUJUI at checkout) = $21.49. Shipping is free.

Thanks to Deal Hunter Navy-Wife for finding this deal.

Features:
  • The 10w monocrystalline solar panel uses trickle charging to charge the battery without causing overcharging. Built-in blocking diode prevents reverse charging without extra maintenance at night. Works even on cloudy days. As frosted surface, the panel doesn't need film protection anymore.
  • PCB upgrade and addition the function of reverse and overcharge protections.And you can test the open circuit voltage normally.ECO-WORTHY 10W solar battery charge your car battery more safely and efficiently.Be a good helper on your journey！
  • Equipped with SAE cable, just plug the cigarette lighter into the port or connect the battery terminal posts with the alligator clip, and the connection can be completed within 3 minutes!

Editor's Notes

Written by powerfuldoppler | Staff
  • About this deal:
    • Please see original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
  • About this product:
    • Rating of 4.3 from over 6000 customer reviews.
  • About this store:

Original Post

Written by Navy-Wife | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
ECO-WORTHY US via Amazon has ECO-WORTHY 10W Solar Car Battery Charger Maintainer on sale for $42.99 - 50% off when you visit the promo code page to activate (or apply code VYJGUJUI at checkout) = $21.49. Shipping is free.

Thanks to Deal Hunter Navy-Wife for finding this deal.

Features:
  • The 10w monocrystalline solar panel uses trickle charging to charge the battery without causing overcharging. Built-in blocking diode prevents reverse charging without extra maintenance at night. Works even on cloudy days. As frosted surface, the panel doesn't need film protection anymore.
  • PCB upgrade and addition the function of reverse and overcharge protections.And you can test the open circuit voltage normally.ECO-WORTHY 10W solar battery charge your car battery more safely and efficiently.Be a good helper on your journey！
  • Equipped with SAE cable, just plug the cigarette lighter into the port or connect the battery terminal posts with the alligator clip, and the connection can be completed within 3 minutes!

Editor's Notes

Written by powerfuldoppler | Staff
  • About this deal:
    • Please see original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
  • About this product:
    • Rating of 4.3 from over 6000 customer reviews.
  • About this store:

Original Post

Written by Navy-Wife | Staff

Community Voting

Deal Score
+22
Good Deal
Visit Amazon

Price Intelligence

Model: ECO-WORTHY 10W Solar Car Battery Charger Maintainer 12V Waterproof Solar Panel Portable Solar Trickle Charger for Car Truck Boat Lawn Mower RV Trailer Tractor ATV Utility Vehicle Battery

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Sort: Lowest to Highest | Last Updated 11/27/2025, 06:40 PM
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Amazon$35.99

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Top Comments

olzoot
239 Posts
58 Reputation
I got a 20w one with the MPPT charge controller. I also got the eyelet connectors to "permanently" connect directly to the battery terminals. I ran the cable externally through the hood and door jamb and covered the exposed wire (6") with plastic corrugated cable protector. The charge controller sits on the instrument cluster and the solar panel itself is suction cupped to the inside of the windshield with a traditional windshield shade behind it to block the sun from cooking the dash/interior. Haven't driven the car in a few months and every time i check it, the car has a strong start, and the controller is flashing green at 100% Charged.... Im happy and wont be prematurely draining/killing the battery again (2 times now) on my backup car.

Per request below, here is the link to the item that i bought:

https://www.amazon.com/dp/B0DHCKC...in_title_2
MerryMeat6430
429 Posts
50 Reputation
"Problem is when there is no sun it drains the battery dead. I thought maybe it was the battery so I put it on a brand new battery not attached to anything else. Once again charged during the day and slowly drained it at night. Then we had two days of gray skies and rain. Killed the battery dead. I don't know if all of them do that and there's just something wrong with this one but I can tell you the one that I had previously on there worked great for years."
OlivePenguin524
705 Posts
80 Reputation
99% of these do NOT have a diode and will drain your battery regardless if it says there's a charge controller. Most charge controllers are $40-100 just by themselves.
You probably could add a diode yourself though to keep it from draining your batteries.

20 Comments

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Jul 16, 2025 04:27 PM
239 Posts
Joined Dec 2014
olzootJul 16, 2025 04:27 PM
239 Posts

Our community has rated this post as helpful. If you agree, why not thank olzoot

I got a 20w one with the MPPT charge controller. I also got the eyelet connectors to "permanently" connect directly to the battery terminals. I ran the cable externally through the hood and door jamb and covered the exposed wire (6") with plastic corrugated cable protector. The charge controller sits on the instrument cluster and the solar panel itself is suction cupped to the inside of the windshield with a traditional windshield shade behind it to block the sun from cooking the dash/interior. Haven't driven the car in a few months and every time i check it, the car has a strong start, and the controller is flashing green at 100% Charged.... Im happy and wont be prematurely draining/killing the battery again (2 times now) on my backup car.

Per request below, here is the link to the item that i bought:

https://www.amazon.com/dp/B0DHCKC...in_title_2
Last edited by olzoot July 16, 2025 at 05:24 PM.
7
Jul 16, 2025 04:40 PM
429 Posts
Joined Dec 2024
MerryMeat6430Jul 16, 2025 04:40 PM
429 Posts

Our community has rated this post as helpful. If you agree, why not thank MerryMeat6430

"Problem is when there is no sun it drains the battery dead. I thought maybe it was the battery so I put it on a brand new battery not attached to anything else. Once again charged during the day and slowly drained it at night. Then we had two days of gray skies and rain. Killed the battery dead. I don't know if all of them do that and there's just something wrong with this one but I can tell you the one that I had previously on there worked great for years."
4
Jul 16, 2025 07:13 PM
705 Posts
Joined Jun 2018
OlivePenguin524Jul 16, 2025 07:13 PM
705 Posts

Our community has rated this post as helpful. If you agree, why not thank OlivePenguin524

99% of these do NOT have a diode and will drain your battery regardless if it says there's a charge controller. Most charge controllers are $40-100 just by themselves.
You probably could add a diode yourself though to keep it from draining your batteries.
3
Jul 16, 2025 08:56 PM
114 Posts
Joined Jul 2004
Mr JumpyJul 16, 2025 08:56 PM
114 Posts
Quote from olzoot :
I got the 20w one with the charge controller. I also got the eyelet connectors to "permanently" connect directly to the battery terminals. I ran the cable externally through the hood and door jamb and covered the exposed wire (6") with plastic corrugated cable protector. The charge controller sits on the instrument cluster and the solar panel itself is suction cupped to the inside of the windshield with a traditional windshield shade behind it to block the sun from cooking the dash/interior. Haven't driven the car in a few months and every time i check it, the car has a strong start, and the controller is flashing green at 100% Charged.... Im happy and wont be prematurely draining/killing the battery again (2 times now) on my backup car.
Which one? Link?
Jul 16, 2025 09:13 PM
211 Posts
Joined Oct 2019
TremodelsJul 16, 2025 09:13 PM
211 Posts
Could you use this to keep up the battery on a dump trailer that only sees occasional use?
Jul 16, 2025 10:52 PM
239 Posts
Joined Dec 2014
olzootJul 16, 2025 10:52 PM
239 Posts

Our community has rated this post as helpful. If you agree, why not thank olzoot

Quote from Mr Jumpy :
Which one? Link?
Here is the link to the 20w charger with separate charge controller.
You may need SAE extension cable depending on your car layout.

Good luck, folks!!!

https://www.amazon.com/dp/B0DHCKC...in_title_2
Last edited by olzoot July 16, 2025 at 05:25 PM.
2
Jul 16, 2025 11:10 PM
179 Posts
Joined Jul 2019
Kracker509Jul 16, 2025 11:10 PM
179 Posts
Quote from olzoot :
I got the 20w one with the charge controller. I also got the eyelet connectors to "permanently" connect directly to the battery terminals. I ran the cable externally through the hood and door jamb and covered the exposed wire (6") with plastic corrugated cable protector. The charge controller sits on the instrument cluster and the solar panel itself is suction cupped to the inside of the windshield with a traditional windshield shade behind it to block the sun from cooking the dash/interior. Haven't driven the car in a few months and every time i check it, the car has a strong start, and the controller is flashing green at 100% Charged.... Im happy and wont be prematurely draining/killing the battery again (2 times now) on my backup car.
That is very cool. I want to try this now lol

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Jul 16, 2025 11:34 PM
239 Posts
Joined Dec 2014
olzootJul 16, 2025 11:34 PM
239 Posts
Quote from MerryMeat6430 :
"Problem is when there is no sun it drains the battery dead. I thought maybe it was the battery so I put it on a brand new battery not attached to anything else. Once again charged during the day and slowly drained it at night. Then we had two days of gray skies and rain. Killed the battery dead. I don't know if all of them do that and there's just something wrong with this one but I can tell you the one that I had previously on there worked great for years."
Sounds more like a parasitic draw from elsewhere, but you certainly know your car better than me. However, just for reference, my solar panel actively charges even on a cloudy day or near dusk. I remember having crappy performing solar panels years ago, but it's pretty amazing how well this thing performs. It definitely exceeded my expectation, but im just a random schmo online. YMMV. Also, please keep in mind that i purchased a different product that what is being shown here in this ad. I posted the link to my actual device. Hope this helps! =)
1
Jul 17, 2025 04:08 AM
16 Posts
Joined Oct 2019
TealReward220Jul 17, 2025 04:08 AM
16 Posts

Our community has rated this post as helpful. If you agree, why not thank TealReward220

Check out the Suner Power. We got the 30 Watts version (https://www.amazon.com/dp/B0DHD3G...title&th=1)
Two of the eight safety protection features like Backflow protection and the Discharge protection, which will help with the discussion of battery being discharge. Also, I heard the solar panel tends to warp due to heat so we mounted on a plywood as a frame to avoid any warpage.
1
Jul 18, 2025 05:52 AM
5,621 Posts
Joined Jul 2017
Luigis3rdcousinJul 18, 2025 05:52 AM
5,621 Posts
Quote from MerryMeat6430 :
"Problem is when there is no sun it drains the battery dead. I thought maybe it was the battery so I put it on a brand new battery not attached to anything else. Once again charged during the day and slowly drained it at night. Then we had two days of gray skies and rain. Killed the battery dead. I don't know if all of them do that and there's just something wrong with this one but I can tell you the one that I had previously on there worked great for years."
That was my experience too. Thankfully returned it
1
Jul 18, 2025 04:11 PM
250 Posts
Joined Dec 2017
raharu14Jul 18, 2025 04:11 PM
250 Posts
Can I charge EV with this? 😀
Jul 18, 2025 04:24 PM
8 Posts
Joined Feb 2019
matthewv1974Jul 18, 2025 04:24 PM
8 Posts
Good deal imo. Says has built in diode. See pic
Jul 18, 2025 04:41 PM
170 Posts
Joined Feb 2013
tangkJul 18, 2025 04:41 PM
170 Posts
Do you have to disconnect before starting/driving (like just moving the car a few feet)?
Jul 18, 2025 06:08 PM
91 Posts
Joined Sep 2007
IamN41Jul 18, 2025 06:08 PM
91 Posts
Quote from tangk :
Do you have to disconnect before starting/driving (like just moving the car a few feet)?
No. I have one (or similar one anyway) that connects via cig lighter and I leave it plugged in all the time and it works great. Note that cig lighter charging will only work if your cig lighter is always powered, even when car is off.

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Jul 18, 2025 06:30 PM
40 Posts
Joined Mar 2022
HonestPenguin348Jul 18, 2025 06:30 PM
40 Posts
Harbor freights solar charger ruined the tachometer in my car. Bought this one and the battery drained as mentioned in another post. I'm guessing spend the money and buy one with a controller

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