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expiredWiznaz | Staff posted May 26, 2025 11:21 AM
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expiredWiznaz | Staff posted May 26, 2025 11:21 AM

Eco-Worthy 10W Solar Car Battery Charger Maintainer

& More

$22

$43

48% off
Amazon
58 Comments 37,125 Views
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Deal Details
ECO-WORTHY US via Amazon has ECO-WORTHY 10W Solar Car Battery Charger Maintainer for $21.60. Shipping is free w/ Prime or on $35+ orders.

ECO-WORTHY US via Amazon also has ECO-WORTHY 5W Solar Car Battery Charger Maintainer for $16.99. Shipping is free w/ Prime or on $35+ orders.

Thanks to Slickdeals Moderator Wiznaz for finding this deal.

Features:
  • Suitable for keeping vehicles/boat battery charged during the weeks unused. No need to disconnect the battery or have someone start the vehicle periodically. The indicator light on the back can observe the charging state. And it's waterproof, you can safely use it outdoors(After experimental test).
  • 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.
  • 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! Suitable for car, truck, boat, lawn mower, motorcycles, trailer, dump trailer, tractor, RV, van, camper, ATV, utility vehicle Battery etc.

Editor's Notes

Written by Corwin | Staff
  • About this Deal:
    • Please see original post for additional details and give the WIKI and forum comments a read for helpful discussion.
  • About this Product:
    • Rating of 4.3 stars overall from over 5,900 customer reviews.
  • About this Store:

Original Post

Written by Wiznaz | 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 for $21.60. Shipping is free w/ Prime or on $35+ orders.

ECO-WORTHY US via Amazon also has ECO-WORTHY 5W Solar Car Battery Charger Maintainer for $16.99. Shipping is free w/ Prime or on $35+ orders.

Thanks to Slickdeals Moderator Wiznaz for finding this deal.

Features:
  • Suitable for keeping vehicles/boat battery charged during the weeks unused. No need to disconnect the battery or have someone start the vehicle periodically. The indicator light on the back can observe the charging state. And it's waterproof, you can safely use it outdoors(After experimental test).
  • 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.
  • 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! Suitable for car, truck, boat, lawn mower, motorcycles, trailer, dump trailer, tractor, RV, van, camper, ATV, utility vehicle Battery etc.

Editor's Notes

Written by Corwin | Staff
  • About this Deal:
    • Please see original post for additional details and give the WIKI and forum comments a read for helpful discussion.
  • About this Product:
    • Rating of 4.3 stars overall from over 5,900 customer reviews.
  • About this Store:

Original Post

Written by Wiznaz | Staff

Community Voting

Deal Score
+29
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

Deal History 

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Sort: Lowest to Highest | Last Updated 12/26/2025, 03:41 PM
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Top Comments

bktj600
227 Posts
69 Reputation
I would not be able to recommend something like this to anyone, as if I recall correctly the OBD2 port draws power through the ecm so any wonky voltage or short might damaged the ecm for the engine and that might be a bit more expensive than a battery. Do you have the solar panel connected to something that is regulating output voltage/amps to the obd2 port?
PurpleSink3298
215 Posts
18 Reputation
Just to note- if you prefer to use the cigarette lighter to connect, it will only charge the system if your cigarette lighter stays on after you turn the vehicle off. Also, 10w is the absolute minimum power I'd bank on for maintaining a trickle charge.
android
598 Posts
105 Reputation
I have had this for 4 months or so, and it works great! Before I had frequent dead battery since I don't drive a lot. Now never a problem.

I mounted the solar panel into my sunroof under the glass, and routed the wires through the trim to the OBD port, which allows always on charging in my older car.

57 Comments

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May 27, 2025 11:45 AM
963 Posts
Joined Jun 2011
DravackMay 27, 2025 11:45 AM
963 Posts
Going to be completely honest. I know nothing about this type of stuff and I've done 0 research yet its on my to do list but yay a deal posts before I can get around to it. So sorry for the stupid questions. Is there any reason this wouldn't work on a generator? is it possible to over charge the battery? I feel like I've seen some tenders have an auto function? Also any advice to a noob researching this stuff that is completely confused by electrical stuff lol.
May 27, 2025 12:50 PM
209 Posts
Joined Dec 2023
TenseScene1475May 27, 2025 12:50 PM
209 Posts
Got odb 50w version from AliExpress for 20 bucks and has been working fine for last 2 years
May 27, 2025 04:50 PM
92 Posts
Joined Sep 2007
IamN41May 27, 2025 04:50 PM
92 Posts
I have this and it's worked well in my pickup that doesn't get driven much. My pickup has two cig lighter ports, one is always powered and the other is only powered when car is on. I have the solar panel on the dash and plugged into the always on port and I leave it plugged in even when driving. Haven't had to jump the battery since and that includes when the truck sat for a month unused in winter.
May 27, 2025 05:02 PM
952 Posts
Joined Jan 2010
vineauxMay 27, 2025 05:02 PM
952 Posts
how long will this silicon last? like those on the garden lights or ? 1 yr ?
May 27, 2025 05:16 PM
564 Posts
Joined Dec 2016
Bounty44May 27, 2025 05:16 PM
564 Posts
For those saying they use an OBD2 port pluggable solar charger, can you post it here? I've checked Amazon and could only find one and it's 10watt
May 27, 2025 05:58 PM
4,255 Posts
Joined Jul 2005
geekwithoutacauseMay 27, 2025 05:58 PM
4,255 Posts
Quote from StrongTest8065 :
Yup. Barely 500mA at peak performance is going to do very little (I can't believe they sell a 5 watt model). Most trickle chargers are 1-2 amps and even they can have difficulty with modern cars that don't actually turn off when you turn them off.
These really should be marketed as charge maintainers rather than trickle chargers, and even that will be a stretch under anything but perfect conditions. There is no situation where you will put this on a dead battery and come back, even a week later, to be able to start the car.
Yes but that counts for many of these chargers. The very best way to use them is to maintain. Do not use for charging a low battery.
May 27, 2025 05:59 PM
4,255 Posts
Joined Jul 2005
geekwithoutacauseMay 27, 2025 05:59 PM
4,255 Posts
Quote from quitosky :
I often have to jump the battery of my car during winter time when it gets to 0 degrees. This might help
It will as long as it's parked w a full battery and gets enough light. (Snow covered won't work obviously)

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May 27, 2025 06:03 PM
4,255 Posts
Joined Jul 2005
geekwithoutacauseMay 27, 2025 06:03 PM
4,255 Posts
Quote from rastatech :
When I park the car for summer travel over the summer for 8 weeks I just disconnect the battery and also have a NOCO jumper just in case. Never had an issue since I learned I better disconnect the battery before though, otherwise likely dead, which cost me a battery the first time I did this.
All those pesky electronics that draw power when the car is parked. Seems to get worse over the years. Can also add a quick disconnect on the battery. Used to use this on my boat. Never an issue after parking it long term.
May 27, 2025 06:04 PM
4,255 Posts
Joined Jul 2005
geekwithoutacauseMay 27, 2025 06:04 PM
4,255 Posts
Quote from JasonR9389 :
Sounds like you need a new battery, shouldn't be an issue if it's fully charged.I've started my V8 Tahoe, ATV, tractor, and my car below zero without needed to have a charger connected. Maybe check your alternator as well.
More like his car has parasitic drains that will lill it in a few weeks.
May 27, 2025 06:52 PM
1,962 Posts
Joined Jan 2014
LunchboxBenMay 27, 2025 06:52 PM
1,962 Posts
Quote from Disturbedklownz :
It's a charger if the battery is not hooked from anything and a maintainer if the battery is hooked up to a car. It's not their fault the car has a parasitic draw more than it's supposed to.Normal draw is between 50-100mA.People need to fix the issue, and this product will do just fine. I have a few of these and they work just fine.
Buuuut... Will it stop if connected to a battery only? I had a solar power pack and it charged until the lithium ion battery expanded. I can't believe it was still working, but totally not a great design. I've overcharged my motorcycle battery by hooking it up to a charger instead of a maintainer overnight.
May 27, 2025 08:20 PM
28 Posts
Joined Apr 2010
Brew_HornMay 27, 2025 08:20 PM
28 Posts
Any idea if I could hook this up to a portable home backup generator I have connected to my house? It's just a DuroMax, but I would like to keep the battery maintained while it sits not in use.
May 27, 2025 09:23 PM
963 Posts
Joined Jun 2011
DravackMay 27, 2025 09:23 PM
963 Posts
Quote from Brew_Horn :
Any idea if I could hook this up to a portable home backup generator I have connected to my house? It's just a DuroMax, but I would like to keep the battery maintained while it sits not in use.
Same issue lol gotta love those electric starters. I tried to just crank mine once a month for a few minutes but that got old quick. if you find a solution please let me know.
May 27, 2025 10:58 PM
459 Posts
Joined Jan 2009
tooslickMay 27, 2025 10:58 PM
459 Posts
Quote from JonP7715 :
So this thing is fine for a lawn tractor that usually doesn't have a problem starting even after sitting all winter but the owner has a slickdeals fueled consumerism problem?
That's highly contagious. It can even travel through Wi-Fi. As a guy who has had it for years I recommend you seek help now!
May 27, 2025 11:27 PM
2,754 Posts
Joined Dec 2007
tipstirMay 27, 2025 11:27 PM
2,754 Posts
Since 2021 I have MPPT with EFTEF 55W 12V with max 18V 36 inch L x W 13 inch on my SUV dash titled up on my Solar channel just like my screen name here drop the Tech for Solar. But I call that my SSG. My AGM Batter is fully charge and no more asking the next door guy to bring his van to give me a boost. My battery is from 2021 still running today! I kind a joke around saying my SUV is Powered by the Sun when it's very sunny I have extra boost of juice to for the system does start off faster. Saving a lot of Fuel also. What is offer here can work but you won't get what I am getting though. Give it a try...

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May 28, 2025 04:39 AM
1,178 Posts
Joined Jul 2018
rastatechMay 28, 2025 04:39 AM
1,178 Posts
Quote from geekwithoutacause :
All those pesky electronics that draw power when the car is parked. Seems to get worse over the years. Can also add a quick disconnect on the battery. Used to use this on my boat. Never an issue after parking it long term.
You mean like some special switch to connect once and then be able to simply turn on and off? I should look for something like that. Beats using the screwdriver after a late night flight to get the car moving again, haha.

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