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Renogy

Renogy 4 Pcs N-Type 320W Monocrystalline Solar Panel

SKU RSP320DC-BKx4-US

Regular price: $1,099.99

Regular price: $1,099.99

✅ Order by 12:00 PM EST and processing starts the same day (ships within 1–2 business days). Free, insured US shipping — delivery in 4–7 business days. Oversized items ship via LTL freight and we coordinate delivery with you by phone.

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Shipping: how fast & how it works

Free standard shipping on every US order — no shipping charges at checkout, no hidden fees, and every shipment is insured against loss or damage.

Processing: 1–2 business days. Order before 12:00 PM EST and processing begins the same day.
Delivery: 4–7 business days via USPS, UPS or FedEx. Tracking is emailed the moment your order ships.
Large items (solar kits, batteries, shelters): delivered by LTL freight carriers such as FedEx Freight, Old Dominion or XPO. The carrier calls ahead to schedule a delivery window — please inspect the pallet and note any damage on the delivery receipt before signing, and we’ll take care of the rest.

Questions about delivery to your location? Call (302) 496-3554 (Mon–Fri, 9am–4pm EST) — we’re happy to check before you order.

What is your Return Policy?

At OffGrid Horizon, we want every customer to shop with confidence. If something doesn’t go as planned, we’ve made returns and refunds simple and fair. Here’s how it works:

1. Return Window

You can request a return within 30 days of receiving your order. Unfortunately, we’re unable to accept returns after that time frame.

2. Who Pays for Return Shipping?

If your item arrives damaged, defective, or incorrect, we’ll cover the return shipping cost — and you’ll receive a full 100% refund or replacement, including any original shipping costs.
If you’re returning an item because you changed your mind, you’ll be responsible for return shipping, and a 25% restocking fee applies.

3. Damaged or Defective Items

Received something broken or not working properly? Contact us within 30 days. We’ll provide a prepaid return label and once the item is returned and inspected, we’ll issue either a full refund or a replacement.

4. Changed Your Mind?

If you no longer want the item, you can return it within 30 days — as long as it’s unused, unopened, in its original packaging, and in resellable condition.

5. Refund Processing

Once we receive and approve your return, we’ll send a confirmation email and issue a refund to your original payment method within 7 business days. Please allow additional time for banks or credit card companies to process and reflect the refund.

How to start a return: email sales@offgridhorizon.com or call (302) 496-3554 (Mon–Fri, 9am–4pm EST) with your order number — we’ll send return instructions and your RMA right away.

Product Description

This four-pack of Renogy 320W N-Type monocrystalline solar panels builds a 1,280-watt array for RVs, cabins, sheds, and ground-mounted off-grid systems. Each panel pairs N-Type cells with an 18-busbar layout and 22.2% module efficiency (per Renogy) in a compact 64.6 x 34.7 inch footprint that fits spaces where full-size residential modules will not.

Who This Pack Is For

Choose this pack if you are building or expanding a 24V or 48V off-grid system and want more watts per square foot than standard 100W-200W panels deliver. It suits RV roofs with room for four panels, cabin and shed arrays, and small ground mounts feeding a mid-size battery bank.

Key Features

1,280W combined output: four 320W panels rated at standard test conditions, per Renogy.
N-Type cell technology: 18-busbar N-Type monocrystalline cells with 22.2% module efficiency, per Renogy.
Compact footprint: each panel measures 64.6 x 34.7 x 1.4 inches and weighs 32.9 lb.
IP68 rated: built to stand up to rain, snow, and heat, per Renogy.
Structural strength: rated for 113 psf (5400 Pa) snow load and 50 psf (2400 Pa) wind load, per Renogy.
Wide operating range: -40°F to 185°F.
Installation flexibility: pre-drilled frames support flat, tilted, or pole mounting in series or parallel arrays.

Why Renogy

Renogy has focused on DIY-friendly off-grid power since 2010, with roots at Louisiana State University and the Louisiana Business and Technology Center. The company builds panels, charge controllers, batteries, and inverters designed to work together, and publishes full spec sheets and manuals for every product.

Specifications

Rated power (per panel)	320W at STC, per Renogy
Pack total	4 panels — 1,280W array
Cell type	N-Type monocrystalline, 18 busbar
Module efficiency	22.2%
Open-circuit voltage (Voc)	43.82V
Optimum operating voltage (Vmp)	37.85V
Short-circuit current (Isc)	8.92A
Optimum operating current (Imp)	8.46A
Max system voltage	1000VDC
Max series fuse rating	20A
Dimensions (per panel)	64.6 x 34.7 x 1.4 in
Weight (per panel)	32.9 lb (131.6 lb for the pack)
Ingress protection	IP68, per Renogy
Operating temperature	-40°F to 185°F
Load ratings	113 psf (5400 Pa) snow; 50 psf (2400 Pa) wind, per Renogy
SKU	RSP320DC-BKx4-US
What's included	4x Renogy 320W N-Type monocrystalline solar panel
Warranty	10-year material and workmanship; 25-year power output (80% of rated output), per Renogy

Sizing & System Fit

Four panels occupy about 62 sq ft of roof or ground space. With a Vmp of 37.85V per panel, this pack pairs naturally with MPPT charge controllers on 24V and 48V battery banks: at 24V the full 1,280W calls for a 60A-class MPPT controller, while at 48V a 30A-class unit covers it. A 2S2P layout (two series strings of two panels) yields roughly 87.6V open-circuit and about 16.9A operating current — check your controller's maximum PV input voltage with cold-weather margin, since open-circuit voltage rises as temperature drops. On the storage side, two Renogy Core 300Ah LiFePO4 batteries in series make a 24V, 300Ah bank that puts this array's daily production to good use.

Warranty & Support

Renogy backs this panel with a 10-year material and workmanship warranty and a 25-year power output warranty (80% of rated output, per Renogy). OffGrid Horizon is a family-owned authorized Renogy dealer, so your purchase carries full manufacturer warranty coverage. Questions before or after the sale: (302) 496-3554.

Shipping

Four-panel orders typically ship palletized via LTL freight. Please inspect every panel for shipping damage before signing the delivery receipt and note any damage with the driver — this protects your claim.

Frequently Asked Questions

What charge controller do I need for four 320W panels?

On a 24V battery bank, plan on a 60A MPPT controller (1,280W of charging works out to roughly 45A at 24V charge voltage, plus margin). On a 48V bank, a 30A-35A MPPT controller covers it. Confirm your string's open-circuit voltage stays under the controller's PV input limit, including cold-weather rise.

Should I wire these in series or parallel?

Both work. Series raises voltage (43.82V Voc per panel) and keeps current low for smaller wire; parallel raises current (8.92A Isc per panel) and tolerates partial shade better. A 2S2P layout balances the two. Observe the 20A max series fuse rating when combining parallel strings.

Will shade on one panel hurt the whole array?

Shade on one panel pulls down the output of its series string, so keep strings short or favor parallel wiring if your site sees regular partial shade. For chronically shaded roofs, Renogy's ShadowFlux anti-shading panels are the purpose-built option.

Can I mix these with panels I already own?

Mixing works best when electrical specs match closely. In series, current is limited by the lowest-current panel; in parallel, operating voltages should match within about 5%. If specs differ significantly, run each panel type on its own charge controller.

How much roof space do I need?

Each panel covers about 15.6 sq ft (64.6 x 34.7 in), so the set needs roughly 62 sq ft plus clearance for hardware and airflow.

Are these 12V panels?

No — at 37.85V Vmp these are higher-voltage modules designed for MPPT charge controllers, which can charge a 12V, 24V, or 48V bank from them. The pack's total wattage is most practical on 24V or 48V systems.

Ready to put 1,280 watts to work? Browse the rest of our Renogy lineup or call (302) 496-3554 — we size off-grid arrays every day.