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SUNER POWER Waterproof 12W 12V Solar Battery Charger

Curated from 106 real Reddit conversations

Refreshed on: March 20, 2025

SUNER POWER Waterproof 12W 12V Solar Battery Charger

Brand: SUNER POWER

Price: $50

Snoop Score:

7.3

Sentiment

5.0

Popularity

5.0

Technical

8.8

Buy on Amazon for $50 See All Solar Battery Chargers & Charging Kits Reviews

As an Amazon Associate, I earn from qualifying purchases.

Snoop's Take

The SUNER POWER Waterproof 12W 12V Solar Battery Charger & Maintainer Pro is designed to efficiently charge and maintain 12-volt batteries in a variety of applications, including cars, boats, and RVs. It utilizes advanced Ultra-Smart MPPT technology to optimize charging performance while ensuring the longevity of the battery. Consumer feedback highlights the effectiveness of this solar charger, with users appreciating its ability to automatically resume charging when the battery discharges. One user mentioned, "it works great for my boat and keeps the battery topped up all summer." This automatic feature combined with the product’s durable design has made it a reliable choice among users who value low-maintenance solutions. Overall, the SUNER POWER solar battery charger is highly recommended for those seeking a dependable and user-friendly option in the solar charger category. Its advanced technology and robust safety features make it a standout choice for battery maintenance.

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

What happens to to power when battery is fully charged from solar panel? Probably a stupid question.
Insightful Chatter

A panel left in the sun doesn't infinitely accumulate voltage, a point OP might be concerned about. :P
Insightful Chatter

7.3

SUNER POWER Waterproof 12W 12V Solar Battery Charger

Buy on Amazon for $50

Vehicle Battery Maintenance

9 / 10

Marine and RV Applications

9 / 10

Off-Grid Power

9 / 10

Battery Preservation

7 / 10

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

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.

Discussion about solar panel functionality

“A panel left in the sun doesn't infinitely accumulate voltage, a point OP might be concerned about. :P”➕

“the linked solar panel wouldnt do much other than trickle charge the battery, 24v 60ah lifepo is around 1500wh, so 20w would take 75 hours of good sun to charge.”➕

Discussion about charge controllers

“i would go buying a charge controller separately.”➕

Discussion about the effectiveness of energy generation from exercise

“I wish there was some form of exercising that could translate into keeping the lights on though - would be a great motivator.”➕

“I would say this is more like an attractive treadmill that happens to charge your batteries rather than deplete them.”➕

“The bike would more likely be used to 'trickle charge' a battery.”➕

Hidden Hero Hacks

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

Curiosity about solar charging solutions for kayaks

“I know nothing about solar power or if this would even be feasible for a kayak.”➕

Buyer’s Cheat Sheet

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

Mention of price history for a similar solar product

“Current price: **$59.95** 👍”➕

Curiosity about solar panel performance in varying conditions

“this does feel really good getting all these things working with solar panel being cherry on top.”➕

“Heltecs suck power.”➕

Discussion about suitability of solar panels for specific devices

“Unlikely for a Heltec v3. Too much of a power hog.”➕

“In my honest opinion unless the board has a solar input on it I wouldn’t use it for solar.”➕

Concerns about power consumption of specific devices

“Eats up too much power.”➕

Discussion on battery charging voltages and expectations

“4.2 volts is the commonly accepted fully charged voltage for lithium batteries.”➕

“you are probably seeing 30% of the rated output at best.”➕

Curiosity about charging solutions for EVs with solar

“Could be a neat way to stop phantom drain if you camp out somewhere super sunny for a few days.”➕

“This is great to know. The other portable systems I've seen are huge.”➕

Discussion about size of portable solar systems

“I can't charge my Bolt from solar without a using generator neutral grounding plug.”➕

Curiosity about charging solutions for off-grid applications

“This off-grid cabin has an energy wheel to help charge the solar-powered battery.”➕

“A bigger one would be pretty good for exercise though, and generate a little energy as a bonus.”➕

“On the grid, power is cheap.”➕

Comments on economic factors influencing solar panel installation in public spaces

“Every single Walmart parking lot will be covered with solar panels as soon as it becomes economically profitable for them to do so.”➕

Cautionary Callouts

Know the pitfalls before they catch you off guard.

Curiosity about excess power from solar panels

“What happens to to power when battery is fully charged from solar panel? Probably a stupid question.”➕

“It's no different than the outlet on your wall that doesn't have something plugged in.”➕

“Makes sense!”➕

“Except it is different, energy cannot be destroyed.”➕

Concerns about the practicality of pedal-powered energy generation

“I don't see any reason why that would be easier on this wheel than on a bike.”➕

“Whatever is put in between the foot and the battery does nothing to change that there is no more energy available than what the human is able to produce.”➕

“Humans are not efficient energy generators...”➕

Discussion on efficiency and energy output of human-powered devices

“There is no way that you can put more energy into the battery than the human delivers to the wheel.”➕

“Maybe I'm being nitpicky but the resistance applied is exactly the same whether you have a mass inbetween the person or not.”➕

“A generator is not 100% efficient, so it would supply less to the battery.”➕

Concerns about grid-tied solar systems shutting down during power outages

“Not accurate. Please read about all of the people who's solar systems shut off when the power was brown/black out in the last 2 weeks.”➕

“Our charger is programmed to prefer charging when we're producing excess power, so it goes to the car before we give it back to the grid.”➕

“Most residential solar systems are grid tie systems, and are automatically killed when the grid goes down to prevent feeding power back to the grid and potentially hurting utility workers.”➕

“There's really no point to allowing islanding if you don't have a sink for your excess power.”➕

Discussions about the reliability and complexity of solar systems during blackouts

“it’s not as simple as just getting solar installed.”➕