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popular Posted by Navy-Wife | Staff • Yesterday

ECO-WORTHY 10W Solar Car Battery Charger Maintainer $21.49+ Free Shipping

$21

$43

51% off
Amazon
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ECO-WORTHY US via Amazon [amazon.com] 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 [amazon.com] (or apply code VYJGUJUI at checkout) = $21.49. Shipping is free.

Note: Amazon promo codes don't always apply seamlessly. If you run into this issue, refresh the page, re-enter the code, or revisit the cart page.
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ECO-WORTHY US via Amazon [amazon.com] 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 [amazon.com] (or apply code VYJGUJUI at checkout) = $21.49. Shipping is free.

Note: Amazon promo codes don't always apply seamlessly. If you run into this issue, refresh the page, re-enter the code, or revisit the cart page.

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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 7/17/2025, 02:53 AM
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Yesterday
225 Posts
Joined Dec 2014
Yesterday
olzoot
Yesterday
225 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 04:24 PM.
5
Yesterday
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Joined Dec 2024
Yesterday
MerryMeat6430
Yesterday
138 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."
2
Yesterday
663 Posts
Joined Jun 2018
Yesterday
OlivePenguin524
Yesterday
663 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
Yesterday
94 Posts
Joined Jul 2004
Yesterday
Mr Jumpy
Yesterday
94 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?
Yesterday
192 Posts
Joined Oct 2019
Yesterday
Tremodels
Yesterday
192 Posts
Could you use this to keep up the battery on a dump trailer that only sees occasional use?
Yesterday
225 Posts
Joined Dec 2014
Yesterday
olzoot
Yesterday
225 Posts
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 04:25 PM.
Yesterday
128 Posts
Joined Jul 2019
Yesterday
Kracker509
Yesterday
128 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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Yesterday
225 Posts
Joined Dec 2014
Yesterday
olzoot
Yesterday
225 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! =)
5h ago
15 Posts
Joined Oct 2019
5h ago
TealReward220
5h ago
15 Posts
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.

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