StoreDeal.ai store
Shop
  • Deals
  • Deal checker
  • Black Friday
  • Buying guides
  • Brands
  • Stores
Travel
  • Flight deals
  • Hotel deals
Company
  • Research
  • Press
  • Use in AI assistants
  • Contact
  • deal.ai apps
Black Friday 2026
  • Walmart
  • Best Buy
  • Target
  • TVs
  • Laptops
  • Headphones
  • Apple
  • Gaming
  • Vacuums
  • Kitchen
  • Toys
  • Smartwatches
  • Tablets
  • Furniture
  • Mattresses
© Deal.ai Inc.·2222 Ponce de Leon Blvd, Miami, FL 33134·support@deal.ai
TermsPrivacy
Deal.ai › WERCHTAY › Solar Panels
WERCHTAY
WERCHTAY 300W 12V Monocrystalline Solar Panel for RV, Home, Camping, Caravan, Boat and off-Grid Power Systems

WERCHTAY 300W 12V Monocrystalline Solar Panel for RV, Home, Camping, Caravan, Boat and off-Grid Power Systems

4.6(9 ratings)

Best price now

$155.99at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

Price facts

  • Last seen at $155.99 at Walmart on Nov 9.

Our take on the WERCHTAY 300W 12V Monocrystalline Solar Panel for RV, Home, Camping, Caravan, Boat and off-Grid Power Systems

The WERCHTAY 300W is a rigid monocrystalline solar panel built for RVs, boats, cabins and off-grid setups. It uses back-contact cells with a 10BB design and claims up to 26.5% efficiency, so it produces more power per square foot than common 100W and 200W panels. The aluminum frame and smooth front face are made to shed snow and dirt and hold up outdoors. Its 18.9V Vmp and 15.88A Imp suit a 12V system through a suitable charge controller, and at roughly 53 x 30 inches it needs real roof space.

Best forRV and van roof installsOff-grid cabins and shedsBoat and caravan chargingBuyers who want high output per square foot
Pros
  • High 26.5% claimed cell efficiency
  • Back-contact design with no front metal lines
  • 10BB layout aimed at low-light output
  • Rigid aluminum frame for wind and snow
  • Rated for a 25-year service life
Cons
  • Large footprint for a 12V panel
  • Needs an MPPT controller to use its 15.88A output
  • Rigid panel, not flexible or portable
  • Efficiency and 25-year claims are the maker's own, not independently verified

WERCHTAY 300W 12V Monocrystalline Solar Panel for RV, Home, Camping, Caravan, Boat and off-Grid Power Systems prices at every store

  • WalmartNew

    In stockSold by WERCHTAY Official Store USReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $155.99Free shippingChecked Nov 9
    Visit Walmart

About the WERCHTAY 300W 12V Monocrystalline Solar Panel for RV, Home, Camping, Caravan, Boat and off-Grid Power Systems

The WERCHTAY 300W is a rigid 12V monocrystalline solar panel for RVs, boats, trailers, caravans, camping and off-grid cabins or home power systems. It uses BC (Back Contact) cell technology, which removes the metal lines from the front of the cells. The panel's efficiency is rated at up to 26.5%.

The back of the panel has a 10BB design that helps it keep producing power on cloudy or low-light days. The front face is smooth, so it stays clean easily.

The panel has a tough aluminum frame built to stand up to heavy snow and strong winds. It is built to last for 25 years.

Maximum power
300W (Pmax)
Voltage at Pmax
18.9V (Vmp)
Current at Pmax
15.88A (Imp)
Open-circuit voltage
22.76V (Voc)
Short-circuit current
17.24A (Isc)
Efficiency
Up to 26.5%
Cell type
Monocrystalline, BC (Back Contact), 10BB back design
System voltage
12V
Dimensions
53.31 x 30.2 x 1.18 inches
Frame
Aluminum
Lifespan
25 years
Color
Black
Pack size
1 panel

Specifications

shape
1Pack 300WSource
color
BlackSource

Questions and answers

What charge controller does this panel need?
Its 15.88A max current and 22.76V open-circuit voltage call for an MPPT controller rated at 20A or more on a 12V battery bank. A small PWM controller would waste much of its output.
Can it charge a 12V battery directly?
No. A 12V panel's open-circuit voltage is too high for a battery, so run it through a charge controller. With one, its 18.9V Vmp is well matched to 12V systems.
How much space does it take?
About 53.3 x 30.2 inches, or roughly 11 square feet. Check your roof or rack before buying, since it is wider and longer than most 100W panels.
Is it worth it over two 150W panels?
One panel means one mount and one set of cables, and the back-contact cells claim more output per square foot. Two smaller panels are easier to fit around roof vents and obstructions.
Is it waterproof and durable outdoors?
It is a rigid panel with an aluminum frame and a smooth front face, built for snow, wind and rain. Mount it with airflow behind it and seal the cable entry.
What comes in the box?
The panel itself with its attached cables and connectors. Mounting brackets and a charge controller are not included and must be bought separately.
Where is the WERCHTAY 300W 12V Monocrystalline Solar Panel for RV, Home, Camping, Caravan, Boat and off-Grid Power Systems cheapest?
At Walmart, for $155.99, as of our latest check.
What do buyers say about the WERCHTAY 300W 12V Monocrystalline Solar Panel for RV, Home, Camping, Caravan, Boat and off-Grid Power Systems?
Rated 4.6 out of 5 from 9 ratings.

More from WERCHTAY

  • W
    WERCHTAY 200 Watt Flexible Solar Panels, 23.5% High-Efficiency Waterproof Monocrystalline Lightweight Solar Panel for RV,Boats,Curved Surfaces,Roofs,Cabin
    WERCHTAY 200 Watt Flexible Solar Panels, 23.5% High-Efficiency Waterproof Monocrystalline Lightweight Solar Panel for RV,Boats,Curved Surfaces,Roofs,Cabin
  • W
    WERCHTAY 4 PACK 300 Watt Solar Panel 18BB N-Type Monocrystalline Solar Panels 25% High Efficiency for RV Home Rooftop Power Station Off Grid Systems
    WERCHTAY 4 PACK 300 Watt Solar Panel 18BB N-Type Monocrystalline Solar Panels 25% High Efficiency for RV Home Rooftop Power Station Off Grid Systems
  • W
    WERCHTAY 100W Monocrystalline Solar Panel
    WERCHTAY 100W Monocrystalline Solar Panel
  • W
    WERCHTAY 200W 12V Flexible Solar Panel
    WERCHTAY 200W 12V Flexible Solar Panel
W
WERCHTAY 12V 300W Flexible Monocrystalline Solar Panel, 2-Pack
WERCHTAY 12V 300W Flexible Monocrystalline Solar Panel, 2-Pack
  • W
    WERCHTAY 250W Monocrystalline Solar Panel
    WERCHTAY 250W Monocrystalline Solar Panel
  • W
    WERCHTAY 12V 200Ah Deep Cycle Lithium Battery LiFePO4
    WERCHTAY 12V 200Ah Deep Cycle Lithium Battery LiFePO4
  • W
    WERCHTAY 400W N-Type Solar Panel
    WERCHTAY 400W N-Type Solar Panel
  • All WERCHTAY deals and products →

    More solar panels

    • A
      Allpowers R600 100W Solar Panel 600W Beige SE100
      Allpowers R600 100W Solar Panel 600W Beige SE100
    • A
      Allpowers R600 100W Solar Panel 600W Black 2 x SE100 Laminated Panel
      Allpowers R600 100W Solar Panel 600W Black 2 x SE100 Laminated Panel
    • J
      JA Solar JAM54D41 LB 440–460W N-Type Bifacial All Black Solar Panel
      JA Solar JAM54D41 LB 440–460W N-Type Bifacial All Black Solar Panel
    • A
      AeternaSol 400W N-Type 18BB Monocrystalline Solar Panels, (2x200W)
      AeternaSol 400W N-Type 18BB Monocrystalline Solar Panels, (2x200W)
    • J
      JA Solar 450W All Black Solar Panel N-Type Mono PV Module
      JA Solar 450W All Black Solar Panel N-Type Mono PV Module
    • R
      Renogy RNG-320Dx8-US
      Renogy RNG-320Dx8-US
    • H
      HanerSun 440W (Pallet of 37) HItouch5N Bifacial N-TOPCon All Black Solar Panel HN18N-54HT-440W
      HanerSun 440W (Pallet of 37) HItouch5N Bifacial N-TOPCon All Black Solar Panel HN18N-54HT-440W
    • R
      Renogy RNG-320Dx6
      Renogy RNG-320Dx6