Do I need a charge controller with these panels?

Yes for any battery system. Four panels in parallel push about 64A at 18.8V, so size the controller above that or wire in series to raise voltage and cut current.

Can I connect all four in series?

Yes. Series wiring gives about 75V and 16A, well under the 1000V system limit, and suits MPPT controllers on 24V or 48V banks.

Are these panels good for a 48V battery bank?

Not in parallel. At 18.8V Vmp they are too low; wire two or more in series so the array voltage exceeds the bank's charging voltage.

What comes in the box?

Four 300W panels. Mounting brackets, cables and a charge controller are not included and must be bought separately.

Are N-type cells better than standard panels?

N-type cells generally degrade more slowly and hold output better in heat than older P-type cells, though the gain is modest over a typical install.

WERCHTAY 18BB 1200 Watt Solar Panel, 4pcs 300W N-Type Solar Panels

Best price now

$519.99at WalmartChecked 3 h ago

Prices are checked against each store and labelled with when.

Visit Walmart

WERCHTAY 18BB 1200 Watt Solar Panel, 4pcs 300W N-Type Solar Panels

Best price now

$519.99at WalmartChecked 3 h ago

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Lowest price today: $519.99 at Walmart (checked Nov 15, 2026).

Our take on the WERCHTAY 18BB 1200 Watt Solar Panel, 4pcs 300W N-Type Solar Panels

The WERCHTAY 18BB 1200W set is four 300W N-type monocrystalline solar panels with 18-busbar cells. Each panel runs at 18.8V and 16A, so the set suits 12V off-grid systems through a charge controller rather than grid-tied inverters. The 22.4V open-circuit and 20.5A short-circuit figures leave headroom for cold mornings. It is a kit for cabins, RVs and backup power, not a rooftop array for a licensed installer.

Best forOff-grid cabin and shed powerRV and van solar setupsHome backup power prepDIY 12V solar builds

Pros

Four 300W panels give 1200W total
N-type cells with 18 busbars for better low-light and heat performance
±3% power tolerance is tight for the class
1000V maximum system voltage allows long series strings
Black frame and backsheet suit visible installs

Cons

No charge controller, mounts or cables included
18.8V Vmp is low for 48V banks; needs series wiring
No efficiency or temperature coefficient figures published
Few owner reports to judge long-term output

WERCHTAY 18BB 1200 Watt Solar Panel, 4pcs 300W N-Type Solar Panels prices at every store

WalmartNew
In stockSold by RayscapeReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$519.99Free shippingChecked 3 h ago
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What reviewers say

4.3 / 510 ratings

Only a handful of ratings exist, averaging 4.3 out of 5. Buyers describe solid output and sturdy frames, but there is little long-term data on degradation.

What people mention

OutputPraisedBuyers say the panels produce close to their rated wattage in good sun.
BuildPraisedOwners describe the frames and junction boxes as sturdy and well sealed.
DocumentationCriticisedSome say the included instructions are sparse on wiring and controller sizing.

About the WERCHTAY 18BB 1200 Watt Solar Panel, 4pcs 300W N-Type Solar Panels

This set includes four 300W N-type solar panels, for a combined 1200 watts. The panels are designed for off-grid use such as RV and road travel, cabins, and backup power for the home.

Each panel has a maximum power of 300W with a power tolerance of ±3%. The maximum system voltage is DC 1000V.

Pieces: 4 solar panels
Color: Black
Power per panel: 300W (Pmax)
Total power: 1200W
Max power voltage: 18.8V (Vmp)
Max power current: 16A (Imp)
Open circuit voltage: 22.4V (Voc)
Short circuit current: 20.5A (Isc)
Power tolerance: ±3%
Max system voltage: DC 1000V

Specifications

number_of_pieces: 4Source
color: BlackSource

Questions and answers

Do I need a charge controller with these panels?: Yes for any battery system. Four panels in parallel push about 64A at 18.8V, so size the controller above that or wire in series to raise voltage and cut current.
Can I connect all four in series?: Yes. Series wiring gives about 75V and 16A, well under the 1000V system limit, and suits MPPT controllers on 24V or 48V banks.
Are these panels good for a 48V battery bank?: Not in parallel. At 18.8V Vmp they are too low; wire two or more in series so the array voltage exceeds the bank's charging voltage.
What comes in the box?: Four 300W panels. Mounting brackets, cables and a charge controller are not included and must be bought separately.
Are N-type cells better than standard panels?: N-type cells generally degrade more slowly and hold output better in heat than older P-type cells, though the gain is modest over a typical install.
Where is the WERCHTAY 18BB 1200 Watt Solar Panel, 4pcs 300W N-Type Solar Panels cheapest?: At Walmart, for $519.99, as of our latest check.
What do buyers say about the WERCHTAY 18BB 1200 Watt Solar Panel, 4pcs 300W N-Type Solar Panels?: Rated 4.3 out of 5 from 10 ratings.