Out of stock

LONGI 445W Solar Panel 144 cell LR4-72HBD

price as of September 21
Solar Loan from 6.99%
All Longi Solar Technology products All 445 Watt Panels


Rated Power Output 445 W
Voltage (VOC)49.4 V
Cell number
  • 144 cell
Cell TypeMonocrystalline
Rated Efficiency20.5%
Connector TypeMC4 or MC4 comparable
Backsheet Color
  • white
Frame Color
  • silver
Dimensions LxWxH82.5" x 41" x 1.38"
Weight60.6 lb
ManufacturerLongi Solar Technology
Manufacturer Part #LONGI445WLR4-72HBD
Operating Temperatures -40 °F to +185 °F
Scope of Application
  • Solar Panels for Boats
  • Solar Panels for Commercial
  • Solar Panels for Home
  • Solar Panels for RV
  • Grid-Tie
  • Off-Grid
Delivery Time 5-7 business days

About product

445w LONGi 144 half-cut cells, transparent backsheet, 1400mm cables, MC4, 35mm silver frame.

LONGi LR4-72HBD 445w is a model that uses a number of technologies to bring durability and performance to the next level.

This module takes full advantage of half-cut cell technology for lower resistive losses and better shade tolerance. At the same time, bifacial design allows the panels to produce up to 25% more electricity. By adding a solid PID resistance and special glass lamination on top, the manufacturer ended up with an efficient and very durable model that is guaranteed to retain at least 84.95% of output after 30 years.

More power output

An already high efficiency of 20.5% is further enhanced by bifacial design, which allows to harvest up to 25% more energy from the back side of the panel. The heat is also less of a threat with this module: with one of the lowest temperature coefficients in the industry, LONGi 445w loses just 0.35% of efficiency for every 1.8°F above 77°F. Half-cut cell technology adds a few more percentage points to the final count, making this model an outstanding example of efficiency.

Optimized design for higher reliability

Careful module BOM selection and solar cell process optimization ensure solid PID resistance. Enhanced electrical design and lower operating current reduce the risk of hot spot formation and decrease resistive losses.

A panel that can handle hail, wind and snow

A 35 mm frame made from anodized aluminum alloy and 2 mm layer of protective tempered glass make this module resistant to the foulest of weather. These panels pass a hailstone test where they take on 1″ hail grains at the speed of 51 mph. The front side of the modules can resist a 5400 Pa load, and the back side 2400 Pa.

30 year power warranty

Slow degradation over the next 3 decades is guaranteed by the manufacturer. The performance will decrease no more than 2% during the first year and then will be limited to 0.45% annually. Your modules will retain at least 84.95% of original performance 30 years later. The manufacturer also offers a 12 year product warranty.

Product details

  • Manufacturer Part Number: LR4-72HBD-445M (1400 mm / MC4)
  • Power Output: 445 Watts
  • 144 Cell, Bifacial Monocrystalline
  • 35mm Depth, Silver Frame, Transparent Backsheet
  • 1500 Volts Max Voltage
  • Shipping Weight: 60.6 lb
  • Shipping Dimensions: 82.5 x 41 x 1.38 in
  • Pallet Qty: 30

Reviews & Questions

  • Reviews (3)
  • Questions (4)
These panels are incredibly efficient. We use them on a farm to power all our gardening needs
Marcel Desrosiers
07/03/2021 12:52 pm
30 year warranty was a bit of a surprise at this price point. This alone was enough for me to make a decision. A1 solar store didn’t make me regret it. They handled my order with utmost care and I got the panels on the 4th day.
06/04/2021 02:31 pm
A lot of solar panels go through my hands. These modules are excellent and I would recommend them to a friend.
Chuck Arnold
05/12/2021 11:10 am

Leave a review

Do they come with mounting hardware?
JIm k
08/09/2021, 21:28
No. Panels only.
144 half cells are the same as normal 72 cells, or does some other math apply here?
Rose Forsyth
06/24/2021, 15:29
You are right. Since the cells are cut in half, we get two half-cut cells from one normal sized cell.
What shipping method is used for these panels?
Clark Dunlop
05/21/2021, 13:27
We work with the best carriers, such as XPO Logistics and FedEx.
What is meant by a transparent backsheet? What is it made of?
04/12/2021, 09:09
This model has a glass backsheet.