POWOXI-Upgraded-20W-Solar-Battery-Charger-Maintainer, External Smart 3-Stages PWM Charge Controller, 12V Solar Panel Trickle Charging Kit for Car,…
$69.99
- 【Latest Design In 2020】: 20-watt high-efficiency single- crystal silicon solar charger, can generate electricity in any weather. It’s easy to carry and install with simple and generous appearance,.Supporting on the ground can receive better sunlight with mounting bracket. It converts sunlight into electricity and maintain your 12-volt battery perennially .US PATENT PENDING!
- 【Intelligent Charging and Maintenance】:External intelligent 3-stage PWM charging controller adopts fast charging, upgrade charging and floating charging. It generates at least 10%-20% more power than traditional controller. It is equipped with an industrial STM 8 microprocessor, which can intelligently control charging, prolong battery life, and charge and maintain batteries better in all seasons.
- 【All-Round Protection】:The solar charger has many protective functions, such as preventing battery from overcharging, overvoltage protection, short circuit protection and polarity reversal protection. The charging controller stops all work at night, doesn’t consume electricity, and starts work automatically in the daytime. Safe maintenance of batteries in all seasons to prolong service life.
- 【LED Indicator】: LED Indicator helps to observe the working state intuitively and understand the battery condition better. A yellow/red indicator indicates that the battery is in charge, and a yellow/red indicator and a green indicator are on at the same time to indicate that the battery is full charged.
- 【After-Sales Guarantee + Low Maintenance】:12-month warranty & life-long technical support.Solar panels are made of light and strong ABS plastic frame. They are lightweight and portable. The surface is made of toughened glass, with high transmittance, durability, waterproof and sunscreen, maintenance-free.
Specification: POWOXI-Upgraded-20W-Solar-Battery-Charger-Maintainer, External Smart 3-Stages PWM Charge Controller, 12V Solar Panel Trickle Charging Kit for Car,…
| Product Dimensions | 16.3 x 15.4 x 0.8 inches |
|---|---|
| Item Weight | 4 pounds |
| Manufacturer | POWOXI |
| Item model number | Solar Panel 20W |
13 reviews for POWOXI-Upgraded-20W-Solar-Battery-Charger-Maintainer, External Smart 3-Stages PWM Charge Controller, 12V Solar Panel Trickle Charging Kit for Car,…
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Eric –
A solar panel that is not waterproof?? Dumb
Roamer –
I had high hopes that this 20W Solar Panel Charger would work for me. Everything I had read said that 20W would be enough to keep the battery charged in my RV as the only draw on the battery was to keep the electronics powered. After weeks of back and forth with Tech Support and correcting connection errors mostly on my part, I was finally able to give the Panel a good test and unfortunately it failed. I live in Eastern Oregon and in winter we have 7-8 hours of sun and or clouds. At first I was so happy that it was finally charging that I did not check it for 10 days. Battery Dead! I then charged the battery and reconnected the Solar Panel and started checking voltage every day. Even on sunny days the electrical draw on the battery was higher then the amount the Solar Panel was generating. I would of had to recharge the battery with an electric trickle charger every 10-14 days. Kind of defeats the idea of a Solar Panel Charger. Tech Support was very helpful through out and the only suggestion they had was to purchase a 100W Solar Panel from them. Call me silly but I was not going to purchase another panel from the same manufacture when the first one would not do what it was advertised to do.
Liz –
Bought this 20W solar panel as a replacement for a smaller panel & have not regretted it. I use it to help keep an electric fence battery charged. It was very simple to set up & extended the battery life to 4 weeks & 2 days using 400 metres of fence tape. I changed the battery then although it was not dead. How much the battery is charged using the panel depends on how much sun there is & how long the fence is or how much power is used if it used to charge other things. There is a light on the panel itself plus lights on the controller box to help. The panel has a stand that makes it easy to set at the right angle to catch any sun. An excellent buy.
Teamsolu –
Looks to be a quality solar panel. Nice frame and long cord. However, even after charging a car battery that was working the day before, for two weeks, the battery had just a little charge, but nothing close to starting a 6 cylinder truck. Sadly, I think I need the 20watt one. I had days in full sun and even moved the panel throughout the day to get the best angel for absorbtion. But not enough to keep the battery that I had charged with my electric battery charger the day before. I hooked the batter up to my electric charger, and within a couple of hours it started fine. This one is not powerful enough for a truck battery unless maybe it is new…
GDA –
Having tried others like this, this one is best. I am super happy with this product.
Bradford S. –
I’ve bought multiple solar panels off of Amazon and this is by far the best one. I’ve had zero issues and it works great. I may even buy another to have a backup. I use it on my 26′ sailboat and it takes a beating from the weather with ease. It even survived a terrible storm that I thought that for sure would mess it up but it didn’t.
AndyCr15 –
I’ve had problems with my motorbike battery going flat while it sits unused in the garage, so bought this to keep it topped up while not in use. It’s quite a big panel and seems to do the job just fine. I guess only time will tell though.
Skinny Mike –
I bought this to charge my leisure battery (110ah) in my caravan while it’s sat in storage, as my tracker is discharging it every 4 weeks.
The solar panel is nice and compact, approximately 40x40cm. It comes with a 3ft cable to the detachable solar controller, then about 2ft of cable to the crocodile clips. The cables are all standard sae, so easy to get extensions and accessories.
I tested the unit on my spare 110ah battery I have at home, it’s old and doesn’t hold its charge for long. But the solar panel charged it from 12.5v to 12.9 in 6 hours. No drain was on the battery in this test. The solar held a charge of 14.5v even in overcast conditions and I had it inside behind double glazing. So no risk of sulfation.
I left the solar attached after charging was complete to see if it would fry my battery. But the charge unit turned off and after 24 hours the battery was still cold.
Fully recommend this setup.
FootHiller –
I needed solar charging for the many months that I expect the trailer to live in storage. I didn’t want to do a permanent installation – I won’t need it while traveling. Once I finally got it hooked up I gave it 10 days and came back to find the battery fully charged at 13.3V, so it’s working as intended. I have the panel hanging from my awning and the bottom of the panel tied to the side with suction cups. We’ll see if it survives our winter winds. That side of the trailer faces SE. I probably should have just tied it down on the roof but I don’t like to climb up there at my age.
It took a while to get it all together because I needed a port for the side of the trailer https://smile.amazon.com/gp/product/B07TNZ4T5F/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
and extension wiring, a ring connector for the battery and a polarity reverser.
Mark –
Promising so far. A previous controller drew nearly 20mA from the battery all night and barely passed any charging current (8-10mA) during our grey UK daylight hours. By my calculations, assuming 16hr of darkness in the UK winter, and some monitoring during the day, my battery was losing at least 1/3 Ah per day through the solar controller. This is in addition to the normal drain through the alarm system, clock, self-discharge, etc.
This one is better. It still seems to draw 7-10mA in half light, but it did get my battery up to 12.6V during the day (250mA behind a slightly tinted windscreen). In darkness, the discharge draw isn’t quite zero, but at 0.12mA it’s as good as. I’ll update this after a few weeks of lockdown, but I suspect a smart charger will still be a good idea after a month or two.
David j Potter –
Using to charge a deep cycle battery on a trailer. Has been performing as expected. Installation instructions were good and easy to follow.
Mounted on top of trailer tool box to charge a deep cycle battery. The battery powers a winch used to load atvs on the trailer. I have been using the winch 6-8 times per weekend. By the start of the next weekend the battery is fully charged.
The negative I have is it is used with a deep cycle battery whose fully charged voltage is not as high as a typical 12 v battery. Therefore the “fully charged” light on the module has only been lit once although I have checked the battery is fully charged with a volt meter.
Richard Beales –
Easy to set up, and after a small issue with the control unit not functioning correctly (sorted by a replacement), all was well and it keeps the charge on a 12V lead acid battery in my Porsche. This used to discharge within a week as it is only used as a ‘fair weather’ car, and now it avoids me having to keep a trickle charger connected from the mains.
Had to buy an extension lead to extend the length of the wires from control unit to battery – original length is quite short, maybe this can be addressed by the supplier, Powoxi, whose customer support is first class.
Dan –
This is exactly what I needed. I have a small outbuilding for my lawn mower, the battery sits for a few weeks at time. It just would take 5 or 6 hours to get the mower ready to mow. Well, along comes this thing and it is perfect. Hung the panel on the shed side in direct light, wired up through the roof edge, and connected it to the mower (the cable is that long). Now I can fire right up even after sitting for 5 weeks. Super simple all plug and play.