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Sunway Solar

Sunway Solar Car Battery Trickle Charger & Maintainer 12Volt 8W Solar Panel Power Charger kit Portable Waterproof for Automotive RV Marine Boat Truck Motorcycle Trailer Tractor Powersports Snowmobile

    • Based on 5,484 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, May 24
Order within 8 hours and 35 minutes
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Size: 8W


Features

  • [Solar Panel Power Up To 8.5W]--Keep your 12V batteries topped off with this solar battery charger ,which helps to manage battery drain in all seasons. Designed to compensate for small, steady battery drains from the vehicle's clock or alarm system.This battery charger will generate solar power to trickle charge battery as long as there is sufficient sunlight available.
  • [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!
  • [Charger & Maintainer For Any Rechargeable 12 Volt Battery]--This solar battery charger is the eco-friendly way to maintain and safely charges Wet, Gel, SLA,AGM and Deep Cycle batteries. 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 indicator lights up when it is charging. The solar charger maintainer also Includes cigarette lighter adapter and alligator battery terminal clamps. We offer 12-Month warranty and good customer service.

Brand: Sunway Solar


Color: black


Product Dimensions: 0.6"D x 14.9"W x 8.3"H


Input Voltage: 12 Volts


Manufacturer: ‎Sunway Solar


Brand: ‎Sunway Solar


Model: ‎8W solar trickle charger and maintainer


Item Weight: ‎2.64 pounds


Product Dimensions: ‎0.6 x 14.9 x 8.3 inches


Item model number: ‎8W solar trickle charger and maintainer


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎SWS-C8W008


Voltage: ‎12 Volts


Wattage: ‎8 watts


Date First Available: May 23, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, May 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Works great
Size: 1.5W
Short answer: Contrary to some of the negative reviews speaking about "warping", "discharging your battery" and other such things, it works exactly as advertised. I drive the test vehicle only a handful of times per year, so it sits outside for months on end sometimes which is bad for batteries, they like to be topped off all the time due to their internal chemistry. 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. ... show more
Reviewed in the United States on August 27, 2022 by Noble
    • Charges Diesel Bus
Size: 1.5W
I bought this because I have a parasitic drain in one of the two batteries on my school bus. Plugged it in using the cigarette lighter option and left out of town for two weeks. Normally after a week bus would be weak at starting or drained completely. Well I came back after two weeks and the bus fired right up!! I’m extremely happy with this product, wasn’t sure if I would need the bigger watt one or not but the 1.5w is able to keep both batteries charged. I have had it for about a month now so if anything changes I’ll update review. 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 light the light stops blinking. So whenever it is in sunlight it will be active even if it’s not plugged in. Just an fyi. ... show more
Reviewed in the United States on April 7, 2023 by Brandon
    • Worked in my Windshield
Size: 8W
Review Image by Jason K. Jason K.
I got about 3.7W max power with the cell sitting flat on the driveway in Oct in Dallas around 2pm. I did not tilt it to get the optimum angle. Initially the power was about 1W higher but after 30-60 min in the sun the efficiency drops. The panel is rated for 8W if I can get 1/3 to 1/2 of that, I'm happy. I also put it in my van on the dash (again not angled toward the sun). The power dropped again (glass is blocking some of the light, see curves). I guess it could overcharge my battery (lead acid) since my parasitic drain is about 70mA and the cell voltage drops to 15.3V at that current (orange curve), but I doubt it since my new van sometimes will charge at 15.5V for 30-60min, then down to 14.4V for most for the time and sometimes as low as 12-13V. Unlike my older cars where lead acid charging was always around 14.4V. When the cell was on the driveway (blue curve) the cell resistance was about 12ohms in the 100mA to 200mA range if that helps. ... show more
Reviewed in the United States on April 2, 2023 by Jason K. Jason K.
    • Quality solar panel, but needs a separate voltage regulator to prevent overcharging.
Size: 8W
It's a quality solar panel, but be careful. The seller advertises two conflicting statements about the product. 1) [Pug And Play, Simple And Very Easy to Use]--This solar charger will NOT overcharge your battery! Scroll down a few pages: 2) If the battery capacity is smaller than 50Ah, a suitable charge controller will be required. In other words, the solar charger WILL overcharge your battery IF it's smaller than 50Ah. I discovered the issue after the purchase and had to buy a separate voltage regulator to properly maintain the battery's voltage. No harm done, but for lay people (without knowledge about electricity) it can be problematic. Again, it's a great product. I just took issue with the seller's inaccurate solar panel specifications. ... show more
Reviewed in the United States on April 4, 2023 by Thomas L.
    • Great solar charger, water and weather proof so so
Size: 5W
Great solar charger for the cost. For the first 6-9 months in the weather it works as designed but after about the 9 month mark the solar charger starts to loose the ability to push a full 4.5-5 watts. After about a year I was only seeing 1.75 watts. 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. The only manufacturing upgrade I could recommend is some type of sealer around the plastic and the top of the panel. Over time I believe water finds a way in and starts to cause issues with the board inside. ... show more
Reviewed in the United States on March 19, 2023 by Chris Emery
    • Very handy
Size: 5W
I have had two of these types of panels in my Honda over the years. If not driving for a while, I open the sunroof shade and leave this on the dash plugged into cigarette lighter. Cold weather, alarm, and fan that sometimes run after engine is shutoff all put some kind of drain on the battery. This will noticeably extend battery charge when you don't use it for a while. The only thing I can recommend is to use it on a dashboard that is flush and flat. My first one was too big and fit too snug and somewhat warped and changed the shape of my dashboard. Lucky for me simply removing the over-sized panel and the UV rays popped it back into original shape again. The suction cups were not necessary for my vehicle as it always stayed in place even with emergency braking etc. ... show more
Reviewed in the United States on February 14, 2023 by GG

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