Lensun 50W 12V Semi-Flexible Fiberglass Back Sheet Solar Panel Kit with 10A Solar Charge Regulator and 5m Cables with MC4 Connector for 12V Charge Battery on Boats Caravans Motorhome Yatch RV
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- The panel uses a more expensive material (imported from Japan) called ETFE (Ethylene Tetrafluoroethylene) versus PET (Polyethylene terephthalate). The ETFE film layer absorbs light better with less reflection leading to more power per square inch.
- Made of Fiberglass back sheet. The ETFE material bonded with the fiberglass back sheet makes a stronger panel than a cheaper PET film one with less chance of cracking or water intrusion.
- Highly resistant to seawater corrosion.
- Waterproof and highly resistant to the harsh operating conditions of a marine environment.
- Auto Switch charge, Mutiple electric protection: over-current and short-circuit protection, inverse connection protection, low voltage and overcharge protection.
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Lensun 50W 12V Semi-flexible Solar Panels:
- Electrical Information:
Peak power: 50W
Solar cell efficiency: 17%
Maximum power voltage: 18V
Maximum power current: 2.78A
Open circuit voltage: 21.24V
Short circuit current: 3.06A
Power allowance range: +/-3%
Maximum system voltage: 500V
Values at standard test conditions: Air Mass - AM1.5, Irradiance - 1000W/m2, Cell Temperature - 25°C
- Material Information:
Laminated for weather resistance
Laminated with fiberglass + ETFE + Silicon cell + EVA + Tedlar
Solar cells: Monocrystalline
Dimensions: 755 x 530 x 2.5mm
Net Weight: 2.03kg
Back sheet: Fiberglass
J-Box: IP 65 rated
10A 12V/24V PWM Solar Charge Regulator:
- Panel of Controller:
Type: Household, not "time set" function
Temp: Temprature probe
Charge: Photo-electricity charging indicating(LED in GREEN)
Fault: Fault indicating(LED in RED)
Power: Load indicating (LED in GREEN) green LED on means there is output of the load
Mode: battery capacity percent indicating
Set: load switch
Two 5m 4mm2 Cables with MC4 Connectors:
One cable with female connetor, another cable with male connector.
1x 50W Mono flexible solar panel
1x 10A solar charge regulator
2x 5m cable with MC4 Connetor
Top customer reviews
* These panels are a great piece of technology.
* If you're not going to permanently mount these? Better figure out some cable strain relief from day one.
The long story.
Bought these in August of 2016. As far as the technology, they're great panels.
I used these panels as a mobile solar generator to fill a 100Ah 12V LiFePo4 battery. In normal weather I'd put them on the roof of my van, and if I really needed power, propped a box or something to angle them more toward the sun (always making sure any bow was toward the back of the panel).
In high winds I put them on the ground, and if feasible, angled them toward the sun.
Light weight, easy to move, easy to stow.
Paired with a Victron BlueSky MPPT controller? I was getting 150W of power and over 9 Amps when pointed loosely at the sun, even in late afternoon in the Fall. (I went through two different model EPSolar Tracers and just wasn't getting great results.)
By the end of October I'd been out boondocking a bit and had deployed these panels on the roof and around the van 40-50 times. I noticed I could clearly see the end of the wire insulation, and 1/4" of bare wire at the junction box. A good 1/4" visible tin on both wires at the junction box on one panel, and the same visible but on only one wire on the other panel.
I wrote Lensun, sent them pictures of the offending cables and junction boxes, explained how I used the panels, and asked if this was covered under the 2 year warrantee for materials and workmanship. Answer: Nope. (Good for them actually. I've hear many rave about how great their warrantee is, but their issues were in the solar cells themselves. The was just an issue caused by a use case they didn't foresee. (and rightfully, probably don't want.)
Even though these panels are pretty much a solid piece of kit, constant movement is not it's engineered use case, and the first place it showed for me is where the wire meets the junction box.