Sunway Solar Car Battery Trickle Charger & Maintainer 5W Solar Panel Power 12V Charger kit Portable Waterproof for Automotive RV Marine Boat Truck Motorcycle Trailer Tractor Powersports Snowmobiles
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Availability:
In Stock.
Arrives
Monday, Aug 18
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Size: 5W
Features
- [Solar Panel Power Up To 5W]--Keep your 12V batteries topped off with this High efficiency mono 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
Item Weight: 0.69 Kilograms
Efficiency: High Efficiency
Maximum Voltage: 12 Volts
Maximum Power: 5 Watts
Manufacturer: Sunway Solar
Brand: Sunway Solar
Item Weight: 1.52 pounds
Product Dimensions: 0.5 x 13.98 x 5 inches
Item model number: 5W Solar battery trickle charger
Manufacturer Part Number: SWS-C5W002
Voltage: 12 Volts
Wattage: 5 watts
Date First Available: August 9, 2019
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Aug 18
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
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.
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Reviewed in the United States on August 27, 2022 by Noble
Size: 1.5W
We have a 4X4 we keep at the lake, this thing works awesome! It keeps the battery tended (we face the vehicle east to catch the sun til around noon) and we've been gone for up to 8 weeks and it pops off every time even at -20*! The suction cups struggle to stay fastened a little bit due to extreme temperature change from summer to winter, so we just propped up a mount behind it to press it against the windshield. MAKE SURE YOU CHECK THE CLIPS ON THE BATTERY POSTS REGULARLY AND USE ELECTROLYTIC GEL AND KEEP THEM CLEAN, THEY CAN CORRODE QUICKLY.
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Reviewed in the United States on April 8, 2024 by Jack
Size: 8W
This may be obvious, but leave it in a place that has the most sun exposure. I failed to do that the first time and came back to a dead car battery after 2 weeks. 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. Well, after the first trip… Also, the suction cups are useless, just set it on a box or the bed in the back.
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Reviewed in the United States on December 19, 2023 by C. Shrout
Size: 4W
Works great for when you can get a new battery right away, although sometimes it can fall off the window.the suction cup are to small to hold the weight I had to replace the with larger ones an they don't give extras 2 not enough.the charge is great .
Reviewed in the United States on April 26, 2024 by Shante l.
Size: 1.5W
This is perfect for preserving lawnmower batts over the off season. I have not tested to determine if they work for larger ( auto) batts. They do not generate much power, yet are sufficient for my [present] application. WAY less costly vs. replacing discharged batts. Also - the amorphous solar panel is the preferred application for all climates/weather zones as they are at highest output/ efficiency in the desired/appropriate spectrum for intermittent, cloudy, low light. Also, obviously the full sun as well. This company is doing it right. I have these units outdoors 24/7, never an issue with UV degradation nor moisture intrusion. I am a mechanical engineer and very critical of devices. These are excellent. STRONG CONFIDENT PURCHASE
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Reviewed in the United States on November 28, 2023 by ED M
Size: 5W
The only reason I give it a low review is they have their polarity reversed different than any other charger so if you already have one installed, it will not work correctly until you reverse the polarity
Reviewed in the United States on May 5, 2024 by Eli
Size: 1.5W
First one worked great, so got a second one for the lawn tractor. Hooked it up outside of the shed that had no electricity, so now tractor and brush mower stayed charged up over the winter.
Reviewed in the United States on May 1, 2024 by Paul Miller
Size: 8W
I haven't been able to fully test this trickle charger, as we've had overcast rainy weather since a week or so before I got it. However, the installation was easy, the lighter plug option is convenient for my convertible which does not cut 12V to the lighter outlet (which is why I had to replace the battery the first time after leaving it for weeks with a USB charger in it). The problem I have is that I don't drive my convertible often. As a result, I find the battery drops, and a while back it got down under 10V. I could leave it on a plug-in charger but I don't want an unsecured extension cord coming out of my garage. I could replace the battery every spring but where's the fun in that? So a friend suggested I try this charger. In the two days or so since I installed it, my Hum dashboard shows no drop in voltage. So as far as I can tell, it's holding the charge around 12.5V even with overcast skies. When the rain ends, maybe end of next week, I'll see if it brings the line back up.
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Reviewed in the United States on December 30, 2023 by Robert Novak Robert Novak