ECO-WORTHY L02M100-1 100W 18V Solar Panel: features, specs and who it suits

The ECO-WORTHY L02M100-1 is a 100-watt, 18-volt monocrystalline solar panel. It is a basic building block for small off-grid power systems, such as those on an RV, a boat or a caravan, and it can also be used to extend an existing 12-volt setup.

What 100 watts and 18 volts mean

Watts describe the panel's peak output under standard test conditions. The 18 volts is the panel's operating voltage, which is typically above a 12-volt battery's voltage so it can charge it. A charge controller sits between panel and battery to regulate this, so a panel on its own should not be wired straight to a battery. ECO-WORTHY says the panel provides about 400 watt-hours per day under standard conditions. Actual output depends on sunshine hours, angle, season, shade and temperature, so treat that figure as a guide.

Monocrystalline cells and PERC technology

Monocrystalline cells are cut from a single silicon crystal and are typically more efficient per unit of area than polycrystalline cells. ECO-WORTHY says PERC (passivated emitter and rear cell) technology lifts cell efficiency to 23%. A passivation film reflects light back inside the silicon, so more of it is used. Efficiency figures like this describe the cells, so check the panel-level specifications in the manual.

Built for the weather

The panel uses tempered glass, a corrosion-resistant aluminium frame and an IP65 junction box. IP65 means the box is dust-tight and protected against water jets. ECO-WORTHY says the panel can last for 25 years. Solar panels typically lose a little output each year, so lifespan statements are about useful operation over time, not constant output.

Mounting and size

Pre-drilled holes on the back allow it to be fixed to a bracket. The listing gives the item dimensions as about 38.8 x 21.1 x 1.4 inches and 10.9 lb, while another feature line gives 35.24 x 23.03 x 1.37 inches and 14.55 lb. Since these figures differ, confirm the exact size and weight before planning a roof or bracket layout.

Who it suits

It suits DIY builders adding solar to an RV, camper, boat or cabin, people who want to expand an existing 12-volt system, and anyone starting with one panel before adding more. It is a single small panel, so larger loads need several panels and a bigger battery bank.

What to check before you buy

• Your system voltage: confirm that the panel suits your 12-volt battery type with a suitable charge controller.
• Daily energy needs: add up your loads in watt-hours and compare with the 400 Wh guide.
• Roof or mounting space: check dimensions against your space and bracket.
• Shade: even partial shade can cut output sharply.
• Wiring: cable, connectors and fuses are separate considerations; follow the manual and local electrical codes.
• What's in the box: check which cables or brackets are included.

The short version

• 100W, 18V monocrystalline panel, model L02M100-1, from ECO-WORTHY.
• PERC cells with 23% efficiency, as stated by the brand.
• Tempered glass, aluminium frame and IP65 junction box.
• Pre-drilled holes for bracket mounting.
• Needs a charge controller; follow the manual and local electrical codes.

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