Manufacturer | Sunway Solar |
---|---|
Brand | Sunway Solar |
Model | 3W solar trickle charger for battery |
Item Weight | 1.44 pounds |
Product Dimensions | 13.9 x 5 x 0.5 inches |
Item model number | 4W solar trickle charger for battery |
Is Discontinued By Manufacturer | No |
Manufacturer Part Number | SWS-C3W001 |
Voltage | 15 Volts |
Wattage | 4 watts |
Sunway Solar Car Battery Trickle Charger & Maintainer 12V Solar Panel Power Kit Portable Backup for Car Automotive RV Marine Boat Motorcycle Truck Trailer Tractor Powersports Snowmobile Farm Equipment
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Save 5% on AA/AAA Battery Solar Charger when you purchase 1 or more Qualifying items offered by Eco Home. Enter code 77VZBPKI at checkout. Shop items
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Save 5% on 5W Solar Battery Trickle Charger & Maintainer when you purchase 1 or more Qualifying items offered by Eco Home. Enter code QPSEMXJU at checkout. Shop items
Purchase options and add-ons
Brand | Sunway Solar |
Item Weight | 1.44 Pounds |
Included Components | Power Cable |
Maximum Voltage | 12 Volts |
Maximum Power | 4 Watts |
About this item
- [Solar Panel Power Up To 4W]--Keep your 12 Volt batteries topped off with this solar battery trickle charger ,which helps to manage 12v battery drain in all seasons. Designed to compensate for small, steady battery drains from the vehicle's clock or alarm system.
- [Simple And Very Easy to Use]--This solar trickle charger will NOT overcharge the battery or cause any damage if the battery capacity is 20Ah or greater, .The solar charger panel mounts easily to the windshield or dash and conveniently plugs into your car's 12 volt cigarette lighter! Suction cups available with the solar charger. {If you need a Quick Connect And Disconnect Extension Cable For this solar charger,Please search the ASIN:B06X6LJTD6.}
- [Stronger and Durable]--This solar powered battery charger is Covered with ultra clear PV glass which is more efficient and also with Durable ABS plastic housing which makes this solar panels charger more stronger. Low Maintenance!
- [For Any Rechargeable 12Volt Batteries]--This solar battery trickle charger is the eco-friendly way to maintain and safely charges Wet, Gel, SLA, AGM and Deep Cycle batterie. It can maintain the charge of any cars, trucks, marines, motorcycles , tractors, ATVs, snowmobiles, boats and personal water crafts or RV 12 volt battery!
- [Reverse Charging Protection]--With BUILT-IN DIODE for prevents reverse charging from batteries.With a 12volt LED charge indicator. The Led light up when it is charging. The solar charger maintainer Includes cigarette lighter adapter and alligator battery terminal clamps. We offer 12-Month warranty and good customer service.
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This Item Sunway Solar Car Battery Trickle Charger & Maintainer 12V Solar Panel Power Kit Portable Backup for Car Automotive RV Marine Boat Motorcycle Truck Trailer Tractor Powersports Snowmobile Farm Equipment | Recommendations | dummy | dummy | dummy | dummy | |
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Price | $29.99$29.99 | $35.99$35.99 | $35.99$35.99 | $22.99$22.99 | -27% $21.99$21.99 List: $29.99 | $39.99$39.99 |
Delivery | Get it as soon as Tuesday, Mar 26 | Get it as soon as Tuesday, Mar 26 | Get it as soon as Tuesday, Mar 26 | Get it as soon as Tuesday, Mar 26 | Get it as soon as Tuesday, Mar 26 | Get it as soon as Tuesday, Mar 26 |
Customer Ratings | ||||||
Easy to use | 4.6 | 4.5 | 4.6 | 4.6 | 4.2 | 4.6 |
Value for money | 4.1 | 3.6 | 4.1 | 4.1 | 3.8 | 4.1 |
Suction power | 3.6 | 3.6 | 3.6 | 3.6 | 3.1 | 3.6 |
Water resistance | 4.0 | 4.1 | 4.0 | 4.0 | — | 4.0 |
Weatherproof | 3.9 | 4.2 | 3.9 | 3.9 | — | 3.9 |
Sold By | Eco Home | SUNAPEX | Eco Home | Eco Home | POWOXI | Eco Home |
power source | Solar-Powered | Solar-Powered | Solar-Powered | Solar-Powered | Solar-Powered | Solar-Powered |
material | — | Etfe | — | Glass | Plastic | Crystalline |
wattage | 4 watts | 5 watts | 5 watts | 1.5 watts | 1.8 watts | 8 watts |
weight | 1.44 pounds | 1.43 pounds | 0.69 kilograms | — | 1.4 pounds | 2.67 pounds |
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Product Description
Sunway solar battery trickle charger maintains the 12 volt battery of car, truck, marine , motorcycles , tractors, ATVs, snowmobiles, boat or RV.
Why do I need a solar trickle charger?
Three reasons to own a Sunway Solar Battery Trickle Charger:
- Batteries Naturally Discharge - Automotive batteries naturally discharge when not in use.
- Vehicles have a small but constant battery drain - Modern vehicles have upwards of 30 body control modules (computers), alarm systems, immobilizers and lock monitoring. These units all consume electricity from the battery. That's why in a week or two with no or little vehicle use the battery can become discharged.
- Battery life is shortened if it is not kept charged - A 12V battery that is not correctly maintained above 12.4V can suffer from sulphation. Sulphation is the main cause of battery failure. That's why the auto battery easy goes to dead when vehicles are left standing for long periods.
With Blue flashing LED charge indicator. It will flash whenever the battery is receiving charge. It also works for trickle charging 12 volt LiFePO₄, Lithium Ion battery.
Features:
- Keep your battery topped up with solar power
- Quickly connects and disconnects to the battery
- Crystalline solar panel, higher efficiency
- Splashing proof design
- Durable ABS Plastic and solar glass
- Conveniently comes with battery clamp and cigarette light plug
- Maintenance free, lightweight compact design
- Interchangeable connectors: accessory socket plug and crocodile clips
- Blue flashing LED charge indicator
- Built-in diode prevents reverse charging
- Suction cups for easy mounting
One way plug connector. Plug and Play. Pretty safe and very easy to install.
- For optimal power, ensure the panel is directly facing the sunlight.
- Clean the Solar Battery Charger MONTHLY, or more frequently to maintain peak efficiency.
- Check the battery is 12V and larger than 20Ah.
- If the battery capacity is 20Ah or greater, the charger will not overcharge the battery or cause any damage.
- If the battery capacity is smaller than 20Ah,a suitable charge controller will be required. Or,please don't continuous charging more than three days.
- The solar charger is a basic of trickle charger and it is best for slowly charging and maintaining battery charge.Please note that the charger is designed to top-up battery charge as a result of natural drainage. It is not intended to recharge a battery that has fully discharged.
- The charger is splashproof and waterproof,but it should not be submerged in water.
Operation: For optimal power, ensure the panel is directly facing the sunlight. Clean the Solar Battery Charger MONTHLY, or more frequently to maintain peak efficiency. Check the battery is 12V and larger than 20Ah. If the battery capacity is 20Ah or greater, the charger will not overcharge the battery or cause any damage. If the battery capacity is smaller than 20Ah,a suitable charge controller will be required. Or,please don't continuous charging more than three days. The solar charger is a basic of trickle charger and it is best for slowly charging and maintaining battery charge.Please note that the charger is designed to top-up battery charge as a result of natural drainage. It is not intended to recharge a battery that has fully discharged. The charger can withstand splashing and water, but it should not be submerged in water.
Interchangeable connectors: accessory socket plug and crocodile clips!
The solar charger panel can be mounted to the windshield or mounted using the mounting holes and place the charger in the desired location in direct sunlight.
Note:Some vehicles have tinted windows that will seriously affect the performance of your charger if it is positioned behind them. For Optimum charging the unit should be placed outside the vehicle in direct sunlight!
Plug the solar charger into your vehicle's 12-volt lighter socket.
In some makes of vehicle, the cigarette lighter may not operate when the ignition is turned off.
Note:You must disconnect the charger from your cigarette lighter or battery when starting you engine or driving. Electrical surges from the car engine when starting and running may damage your charger.
The charger can be connected to the battery using the crocodile clips provided.
Note:Ensure the red cable is connected to the positive (+) and the black cable is connected to the negative (-). If in any doubt seek assistance from a competent person.
Do not leave the solar charger connected and unattended for long periods.
1.5W Amorphous | 4W Poly Crystalline | 5W Mono Crystlline | 8W Poly Crystalline | 8W Mono Crystalline | |
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Customer Reviews |
4.2 out of 5 stars
6,140
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4.2 out of 5 stars
6,140
|
4.2 out of 5 stars
6,140
|
4.5 out of 5 stars
2
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4.2 out of 5 stars
6,140
|
Rated Power | 1.5W | 4W | 5W | 8W | 8W |
Solar cell type | Amorphous | Poly Crystalline | Mono Crystalline | Poly Crystalline | Mono Crystalline |
Discharge Protection | ✓ | ✓ | ✓ | ✓ | ✓ |
Cable Length | 2.4m | 2.4m | 2.4m | 2.4M | 2.4m |
Covered with tempered Glass | ✓ | ✓ | ✓ | ✓ |
Product information
Technical Details
Additional Information
ASIN | B01MYVUSRH |
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Customer Reviews |
4.2 out of 5 stars |
Best Sellers Rank | #5,528 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #3 in Solar Battery Chargers & Charging Kits |
Date First Available | December 4, 2016 |
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the performance and ease of use of the solar panel. For example, they mention it works great, is easy to install, and does an excellent job of keeping their battery charged. That said, opinions are mixed on the battery capacity, quality, charging, and waterproofness.
AI-generated from the text of customer reviews
Customers like the performance of the solar panel. For example, they mention it works great, easy to use, and does an excellent job at keeping their battery charged. Some say it's a great value for the money and provides peace of mind.
"...Next time I left it in a sunnier spot and it worked great! Used for 6 extended business trips and always come back to a starting car...." Read more
"...WAY less costly vs. replacing discharged batts...." Read more
"...It could fail and then put a load on the battery in that case...." Read more
"Works great easy to use, quickly installed. I use mine often when on vacation" Read more
Customers find the solar panel easy to use. They mention that it is easy to install, hook up, and use. Some say that it comes with many different cables. Overall, most are satisfied with the product's ease of use.
"Works great easy to use, quickly installed. I use mine often when on vacation" Read more
"...However, the installation was easy, the lighter plug option is convenient for my convertible which does not cut 12V to the lighter outlet..." Read more
"Very convenient. Easy to use." Read more
"Easy set up" Read more
Customers are mixed about the battery capacity of the solar panel. Some mention that it keeps their battery charged and will not overcharge it. However, others say that it drains the battery instead of charging it.
"...For a HEALTHY battery, it MAINTAINS charge easily overcoming a parasitic drain in my vehicle of 9mA or (0.009Amps), and still puts a NET 44mA..." Read more
"...They do not generate much power, yet are sufficient for my [present] application. WAY less costly vs. replacing discharged batts...." Read more
"...It helps keep the battery topped off even when we forget to put it on the charger...." Read more
"...have pretty new batteries, but after less than 4 months both batteries were 100% dead despite being connected to these chargers with good sunlight...." Read more
Customers are mixed about the quality of the solar panel. Some mention it's well made, durable, and long-lasting, while others say that it warped in a couple of spots and cracked in one.
"...This product is garbage." Read more
"...So I’m not sure how the panel just died. It’s in perfect condition and I’m just disappointed I can’t use it anymore." Read more
"...Mine is warping badly and the case is separating after 2 years. It still works to keep a charge.Good:..." Read more
"...But for the price and the durability I have replaced them with the same brand every year. 4 years in a row and they are still my goto...." Read more
Customers are mixed about the charging of the solar panel. Some mention that it charges well with indirect sunlight, is an excellent charger, and runs a trickle charge off the sun. However, others say that they get no charge, it's not for fully charging a battery, and won't recharge a dead battery.
"...It is not intended to charge a battery that has been fully discharge.4 star rating instead of 5 for only a few days of use...." Read more
"...We keep them parked under the carport and they still charge well with indirect sunlight." Read more
"...the power was about 1W higher but after 30-60 min in the sun the efficiency drops...." Read more
"...Overall this is good little low amp solar charger." Read more
Customers are mixed about the waterproofness of the solar panel. Some mention that it is weatherproof, while others say that it's not an IP44 weatherproof splashproof design.
"...Over time I believe water finds a way in and starts to cause issues with the board inside." Read more
"This is a good weather proof panel that will keep your vehicle charged up...." Read more
"...-the connector fills with water when it rains. The panel was on my daily driver and the connector between the panel and the clips filled with water...." Read more
"...These chargers have surviced rain, snow and very hot temperatures. Highly recomend these chargers." Read more
Customers are dissatisfied with the suction cups provided by the solar panel. They mention that the cups are useless, fell off, and are not strong enough to hold the unit in place. Some say that the sucker cups are too small and won't hold the panel. Additionally, some customers report that the window attachment suction cup is not easy to attach to the frame and that the cup slides in grooves which gave way on their window.
"...Well, after the first trip… Also, the suction cups are useless, just set it on a box or the bed in the back." Read more
"...The suction cups provide are useless. Go to a hobby shop and buy a pair of quality suction cups that will hold.2)...." Read more
"...Keeps my battery charged. Suction cups always fall off window but not a huge deal for me" Read more
"...ConSuction cups would not stick to my truck dashboard. Not really an issue, just laid it down flat...." Read more
Customers are dissatisfied with the light of the solar panel. They mention that the blue light doesn't blink when it's plugged in, it constantly flashes, and there's no indicator light to let them know it'll charge. Some say that the charging indicator light only worked for the first few seconds, then never came on again.
"...I did notice that the blue light does blink when it’s not plugged in if the sun is hitting the panel but as soon as I remove it to an area with no..." Read more
"When the panel is unplugged the blue light flashes , when I plug it into my 4 wheeler the light goes dark , is this normal ?" Read more
"...It is supposed to blink when it is charging but, it blinks whenever there is light regardless of whether it is connected to the battery or not...." Read more
"...There’s no indicator light to let you know it’s charging...." Read more
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Long answer: I'm an Electrical Engineer so I did a few basic tests, with the following findings and some recommendations:
NOTES: DO NOT leave the panel plugged in when starting or driving, spikes in the line might cause damage to the circuitry. It could fail and then put a load on the battery in that case. NO test for weather/water resistance was conducted, I have yet to test it in the winter time, which is a more challenging time for it and batteries too. I'm optimistic it will work ok given what I've seen so far. I tested this resting on the dashboard (no suction cups, I wouldn't trust that ever), with clear view of the sky facing generally slightly east of North during mid-late August, near the Washington DC area using a cigarette lighter connection with the supplied adapter. (it's FUSED, and works with a NEGATIVE ground socket/system, i.e. most everything not vintage) Some people have said the cig cable polarity is backwards, but in order to work as a CHARGER, the + connects to + as it should! Btw, the BLUE LED does NOT adversely effect the performance, and need not be "disabled" as some have claimed. The numbers I'm reporting are all with the unit as delivered, no modifications were made.
1) NO Battery discharge when dark (i.e., it doesn't drain your battery in the dark, or ever due to internal diode) Tested on the bench as well with a power supply and ammeter.
2) NO WARPING of case in direct sun 8hrs/day mid latitude US East Coast in August. (measured CABIN peak temps up to 117 deg, low of 69F, dash probably hotter in direct sun). ABS plastic has a glass transition temp (i.e. warping) around 105C (221F) so IF it is actually ABS, no melting/warping seems possible at temps found in cars NOT on fire lol!
3) For a HEALTHY battery, it MAINTAINS charge easily overcoming a parasitic drain in my vehicle of 9mA or (0.009Amps), and still puts a NET 44mA (0.044Amps) charging current INTO the battery in direct noon sun, and a NET positive charge current (in clouds/overcast), albeit only 7.3mA. In only 1 sunny day (and overnight) my new battery @ 12.34v went to 12.55v from this device. This is because it is a HEALTHY battery. The max open circuit voltage of the charger I measured around 22v but it can only deliver 1.5W max so you aren't going to hurt the battery with such low currents, and at best charging currents are only present up to about a 1/3 the time during a 24 hr period I'd estimate.
NOTE: A dead/failing battery cannot be rescued by this or any charging device, and my prior failed battery at 12.24v (after 2 day commercial charge from "dead") with this same device under same summer conditions in 2 days went down to 12.01v and failed to turn over the engine! After the attempt it was down to 11.5v, clearly no good.
I think this is suited as a MAINTAINER, don't bother thinking this will "charge" a vehicle battery. I drive that vehicle very very rarely, so this will keep the battery ready to go without having to periodically start it every few weeks to charge it up.
Temperature and time will reduce the efficiency of the panel, but there is a 4x margin in my case (with a 9mA parasitic drain, which is quite small). If your car has a lot of electronic features, security systems etc, your parasitic drain could be more than this can even put out. In that case you would need a bigger higher power panel (this is only 1.5W).
To measure the parasitic drain: with all vehicle doors shut, pull the main battery fuse and put an ammeter there, since it will measure absolutely everything, using any other fuse will only get a subset of what your battery drain is. Start with the maximum scale (typically 10A) to be safe, switch to smaller scales once you know the range. Let the initial connection settle since there will be a surge for a bit as all the electronics initialize and settle into a steady state. My vehicle settled in about 5 seconds (an after market CD player self test used 250mA during that 5 seconds)
In principle, some sensors and other fancy stuff could spike some current periodically, but this couldn't be known without a logging ammeter. In all likelihood it won't boost the average drain in any significant way from your measured steady state.
Both my cars have pretty new batteries, but after less than 4 months both batteries were 100% dead despite being connected to these chargers with good sunlight. I'd be better off just junking the batteries and buying new ones after four months, and that's insane. This product is garbage.
My tip: if you're worried about long term storage of batteries, either but a proper tender and remove the battery you have, or just plan on buying a new battery next year. This product is garbage.