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SUNER POWER 30W 12V Solar Battery Charger Maintainer

Curated from 129 real Reddit conversations

Refreshed on: March 19, 2025

SUNER POWER 30W 12V Solar Battery Charger Maintainer

Brand: SUNER POWER

Price: $89

Snoop Score:

6.9

Sentiment

7.0

Popularity

7.8

Technical

6.3

Buy on Amazon for $89 See All Solar Battery Chargers & Charging Kits Reviews

As an Amazon Associate, I earn from qualifying purchases.

Snoop's Take

The SUNER POWER 30W 12V Solar Battery Charger Maintainer is designed to keep your 12V batteries charged and maintained using solar energy. With advanced MPPT technology, it maximizes efficiency for continuous power supply, making it ideal for various applications like cars, boats, and RVs. Consumer feedback highlights the product's impressive efficiency, with one user noting, "Yes the solar panel will keep it charged as long as it gets some sun every day." Additionally, the built-in safety protections have been praised, ensuring safe operation even in varying weather conditions. However, some users expressed disappointment with the charging speed, mentioning that "it takes basically a day to charge it." Overall, the SUNER POWER 30W charger is highly recommended for outdoor enthusiasts seeking a reliable solar charging solution, despite the noted charging time limitations.

Not for you? Check out our other rated Solar Battery Chargers & Charging Kits

I am looking to build a solar charging array for the top of my sunshade and/or bow, that could trickle charge the battery during long trips in full sun or over multiple days if camping when charging is otherwise unavailable.
Positive Feedback

What part of "it takes basically a day to charge", was unclear?
Negative Feedback

6.9

SUNER POWER 30W 12V Solar Battery Charger Maintainer

Buy on Amazon for $89

Vehicle Battery Maintenance

4 / 10

Marine and RV Applications

10 / 10

Off-Grid Power

10 / 10

Battery Preservation

4 / 10

See how this compares to all Solar Battery Chargers & Charging Kits

What it does well!

Key strengths users can’t stop talking about.

High Efficiency MPPT Technology

“I am looking to build a solar charging array for the top of my sunshade and/or bow, that could trickle charge the battery during long trips in full sun or over multiple days if camping when charging is otherwise unavailable.”➕

“Yes the solar panel will keep it charged as long as it gets some sun every day.”➕

“Scientists advance new way to store wind and solar electricity on a large scale, affordably and at room temperature.”➕

Full Safety Protections

“On bright, sunny days you may be fine, but a few cloudy days and you may be in the hole.”➕

Fantastic purchase for outdoor use

“Fantastic purchase that I use when I head out doing Bushcraft.”➕

Where it needs some work!

Areas to watch—feedback on possible improvements.

Takes a long time to charge

“What part of "it takes basically a day to charge", was unclear?”➕

“It takes basically a day to charge it.”➕

Compare On All Talked About Dimensions

Product Name	Price	Score	See Details	Buy Now
ZOUPW 30W 12V Solar Battery Charger	$69	8.6	Details	Buy
POWOXI Upgraded 7.5W Solar Battery Trickle Charger	$39	7.5	Details	Buy
SUNER POWER Waterproof 12W 12V Solar Battery Charger	$50	7.3	Details	Buy
SUNER POWER 20W 12V Solar Battery Charger & Maintainer	$85	7.3	Details	Buy
Sun Energise 10W 12V Solar Battery Charger Maintainer PRO	$55	7.3	Details	Buy
SUNER POWER 30W 12V Solar Battery Charger Maintainer	$89	6.9	Details	Buy
POWOXI 12V Solar Car Battery Charger	$59	6.7	Details	Buy
Sunway Solar Car Battery Trickle Charger & Maintainer	$22	6.6	Details	Buy
SUNAPEX 12V Solar Battery Charge Kit	$21	6.4	Details	Buy
SUNAPEX 20W 12V Solar Panel Battery Charger Maintainer	$49	6.1	Details	Buy
Sun Energise 25W 12V Solar Powered Battery Charger & Maintainer	$89	4.4	Details	Buy
Renogy 10W Solar Trickle Charger Portable Battery Maintainer	$25	4.2	Details	Buy
Topsolar 10 Watt 12 Volt Solar Trickle Charger	$19	3.9	Details	Buy
Saillong 10W 12V Solar Car Battery Charger Maintainer	$19	3.9	Details	Buy
Sunway Solar 16FT Battery Charger Extension Cable Adapter	$16	2.4	Details	Buy
FlexSolar 20W 12V Solar Panel Battery Charger	$49	2.3	Details	Buy

Core Power Plays

The specs and strengths that make it shine.

Comments on the durability of solar chargers

“Likely not waterproof so don't expect it to last more than a season even on fresh water lake.”➕

“This is a Fakespot Reviews Analysis bot. Fakespot detects fake reviews, fake products and unreliable”➕

Discussion about solar charging capabilities for backup power

“I'm getting mixed messages about the feasibility of adding batteries to a solar system to achieve the backup power goal.”➕

“Batteries stay full while the sun is out and the house runs on solar.”➕

“The house can run on solar while the batteries charge.”➕

“If you are using AC and trying to live normally, I don't see it.”➕

Discussion about solar panel effectiveness in various conditions

“Wouldn’t the solar panel keep the battery maintained?”➕

“If you have a lithium battery and a cutoff switch, you don't need to trickle charge in storage.”➕

“Yeah you def should have a switch before and after the charge controller for this reason.”➕

General discussion about solar panel performance in various conditions

“Thanks! I think I’m going to wait until ego makes the solar panels too, and then see how those are performing.”➕

Hidden Hero Hacks

Unexpected tricks and side‑door uses you’ll love.

General chatter about custom solutions for solar charging

“seems you are building a capsize machine.”➕

“Thanks, that's exactly the kind of information I'm looking for.”➕

“It was basically plug and play.”➕

General chatter about solar charging capabilities

“Useful if you work outside a lot all day and are far removed from any charging port I guess.”➕

Discussion about solar panel applications for battery charging

“In short charge the 12v battery with solar and the allow that battery to charge the Nexus.”➕

Discussion about using solar chargers for emergency preparedness

“I get to save money in the long run.”➕

“It's nice when you have a 'closed loop' system like that.”➕

Buyer’s Cheat Sheet

What to check before you click ‘Add to Cart.’

Humorous remarks about charging methods

“He forgot to plug the charger”➕

“Hey McFly you bojo! Hoverboards don’t work on water. Unless you’ve got POWERRR”➕

“It's like a race between solar and phone battery. So who won?”➕

“My research on all these van/skoolie/rv research just ends up with me feeling overwhelmed.”➕

Questioning the student's intent

“Hijacking to ask a stupid question: how do we know the student wants to charge his phone later?”➕

Discussion about solar charger installation complexity

“Any recommendation on an affordable solar rig that is easy to install permanently, or is easy to put up/take down after a sail.”➕

“+1 for Renogy - best performance and quality for the price point hands down.”➕

“You should get a dual battery charge controller rather than two single controllers.”➕

“I am looking to build a solar charging array for the top of my sunshade and/or bow.”➕

Questions about installation and investment costs

“how much did it cost?”➕

Discussion about solar panel ownership and financing options

“What do you wish you'd known before you installed solar panels on your home.”➕

“Most people who go solar are happy they did so, they are saving money and using renewable energy.”➕

“Know that loans provided by solar contractors are almost never as good as they look.”➕

“I'd strongly suggest you stay away from a leased systems unless you plan on living there forever.”➕

Concerns about battery maintenance and solar panel limitations

“Depending on the charge controller it's typically best to disconnect the panel from the controler before removing the battery.”➕

“If it's a motorhome, your RV is going to have 2 battery banks, a house battery and a chassis battery.”➕

Questions about charging times and specifications

“How long does it take to fully charge from solar alone?”➕

“Powerbank seems enough for that AA charger, but those solar panels look too light for either.”➕

“which model is this?”➕

Cautionary Callouts

Know the pitfalls before they catch you off guard.

Discussion about charging efficiency and losses

“the efficiency of a solar panel is like 15%-20%. So he is taking an 80% loss.”➕

“the linked solar panel wouldnt do much other than trickle charge the battery.”➕

“Love me my power consumption!”➕

“Incoming basic question: How much will that support?”➕

Concerns about warranty claims and product reliability

“So fair warning.”➕

“They are a bunch of two faced liars, scam artists and con men.”➕

“Fakespot detects fake reviews, fake products and unreliable sellers using AI.”➕

Discussion on battery heat issues with solar chargers

“Just something small and simple that can fit in my small day bag and be used to charge up my Streamlight batteries.”➕

“If you're serious about having solar power, it's best to have a dedicated separate solar panel that is at least 30W.”➕

“Basically solar doesn't make much sense for most people and most kits.”➕

“That thing works great and weighs less than the battery bank.”➕

Concerns about solar charging efficiency and time required

“Personally would not invest in the solar charger adapter for the power station at this time.”➕

Concerns about product reliability and customer service

“Before purchasing call the company to confirm that it's legit.”➕