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Renogy

Renogy 450-Watt 12-Volt Bifacial Monocrystalline Solar Panel (2 pcs)

SKU RSP450DT-120x2-G1-US

Regular price: $749.99

Regular price: $749.99

✅ 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 two-pack of Renogy 450W bifacial monocrystalline panels delivers 900 watts of front-side power for residential roofs, ground mounts, and off-grid systems. Each panel combines PERC cells, half-cut construction, bypass diodes, and a 10-busbar layout, with bifacial glass that captures reflected light on the rear side — up to 30% more energy than comparable monofacial panels, per Renogy.

Who This Pack Is For

A practical pick for homeowners adding panels to a ground mount or outbuilding, cabin owners on 24V banks, and anyone who wants full-size residential modules with third-party safety listings — these panels are ETL Listed to UL 61730, which some jurisdictions require for permitted installations.

Key Features

900W combined output: two 450W panels rated at standard test conditions, per Renogy.
Bifacial design: captures reflected light on the rear side for up to 30% more energy, per Renogy.
PERC half-cut cells: with bypass diodes and 10 busbars to limit losses when part of the panel is shaded.
20.8% module efficiency: per Renogy.
Built for weather: rated for snow loads up to 113 psf (5400 Pa) and -40°F to 185°F operation, per Renogy.
Safety listings: ETL Listed to UL 61730; TUV certified to IEC 61215 and IEC 61730, per Renogy.
1500VDC max system voltage: with a 30A max series fuse rating.

Why Renogy

Renogy has focused on DIY-friendly renewable power since 2010, with origins at Louisiana State University and the Louisiana Business and Technology Center. The company publishes datasheets for every panel and builds controllers, batteries, and inverters designed to match.

Specifications

Rated power (per panel, front side)	450W at STC, per Renogy
Pack total	2 panels — 900W front-side array
Cell type	Monocrystalline PERC, half-cut, bifacial, 10 busbar
Module efficiency	20.8%, per Renogy
Open-circuit voltage (Voc)	41.25V
Optimum operating voltage (Vmp)	34.67V
Short-circuit current (Isc)	13.89A
Optimum operating current (Imp)	12.98A
Max system voltage / series fuse	1500VDC / 30A
Dimensions (per panel)	75.2 x 44.6 x 1.4 in
Weight	50.9 lb per panel (101.8 lb for the pack)
Junction box / cables	IP68 junction box; 12 AWG, 66.9 in output cables, per Renogy's datasheet
Snow load	Up to 113 psf (5400 Pa), per Renogy
Operating temperature	-40°F to 185°F
Certifications	ETL Listed (UL 61730); TUV (IEC 61215, IEC 61730); fire performance Type 1; ISO 9001 facility, per Renogy
SKU	RSP450DT-120x2-G1-US
What's included	2x Renogy 450W bifacial monocrystalline solar panel
Warranty	10-year material and workmanship; 25-year power output, per Renogy's datasheet
Spec sheet	Renogy RSP450DT-120 datasheet (PDF)

Sizing & System Fit

Two panels occupy about 47 sq ft. With a Vmp of 34.67V, these are MPPT-controller panels: on a 24V bank, 900W is roughly 31A of charging — a 40A-class MPPT controller fits well; on a 48V bank about 16A. Wired in series the pair reaches roughly 82.5V open-circuit; in parallel, 41.25V at up to 27.8A short-circuit. On 12V banks the wattage pushes past 60A of charge current, so 24V is the more practical home for this pack. A Renogy Core 300Ah LiFePO4 battery pairs naturally — use two in series for a 24V bank.

Warranty & Support

Per Renogy's datasheet, these panels carry a 10-year material and workmanship warranty and a 25-year power output warranty. OffGrid Horizon is a family-owned authorized Renogy dealer — your purchase qualifies for full manufacturer coverage, and we're a phone call away at (302) 496-3554.

Shipping

Full-size panels like these (75.2 x 44.6 in, 50.9 lb each) typically ship palletized via LTL freight. Inspect both panels for damage before signing the delivery receipt and note anything with the driver — this protects your claim.

Frequently Asked Questions

The title says 12-volt — will these charge a 12V battery?

Yes, through an MPPT charge controller, which converts the panel's 34.67V operating voltage down to battery voltage. That said, 900W on a 12V bank means over 60A of charge current, so most owners run this pack on 24V or 48V systems.

How do I get the bifacial gain?

Mount the panels with the rear side open to reflected light — elevated ground mounts over gravel, concrete, or snow work well. Flush roof mounting yields front-side output only. The up-to-30% figure is Renogy's, under favorable reflection.

How does this panel handle partial shade?

Half-cut construction with bypass diodes lets unshaded sections keep producing when part of the panel is blocked. It softens shade losses but doesn't eliminate them — site the panels clear of midday shadows where possible.

What certifications matter for a permitted install?

These panels are ETL Listed to UL 61730 and TUV certified to IEC 61215/61730, per Renogy — the listings building departments typically look for on residential solar equipment. Confirm requirements with your local authority.

Can I put these in the same string as my other panels?

Only with closely matched specs. Series strings are limited by the lowest current; parallel groups need matching voltage within about 5%. Otherwise, use a separate controller input per panel type.

How much snow can they take?

Renogy rates them for snow loads up to 113 psf (5400 Pa) — suitable for heavy-snow regions when the racking is rated to match.

Not sure whether 24V or 48V makes more sense for your build? Call (302) 496-3554 or explore the full Renogy collection.