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High-Efficiency PV Modules

HJ-B1-445W

HJ-B1-445W

23.8% efficiency and −0.26%/°C, with a busbar-free front side that removes about 5.5% of the connection points from an equivalent DC block.

Rooftop capacity is bounded by area, so efficiency is not a vanity metric there — it is the difference between covering the load and not covering it. And once the array is up, the cost that quietly accumulates is maintenance: failed cells, hot spots, connection faults on a roof that is awkward to reach.

The HJ-B1-445W is specified against both. It delivers up to 23.8% efficiency with a −0.26%/°C temperature coefficient, and its busbar-free front side means roughly 5.5% fewer connection points for the same DC capacity — fewer places for the array to fail.

Why this one

  • Up to 23.8% deliverable efficiencyAmong the highest in the range, which matters most where roof area, not budget, is the binding constraint.
  • First-year degradation ≤1%, then ≤0.35% a yearOne of the flattest degradation curves published in this range.
  • 15-year product warranty, extendable to 25; 30-year power warrantyWarranty terms as published for this model.
  • Temperature coefficient of −0.26%/°CSuperior high-temperature behaviour, so the gap between nameplate and field output stays narrow through a summer afternoon.
  • Dual-roofpit compatibilityMaximises rooftop capacity with optimised partial shading tolerance, letting you use roof planes that a less shade-tolerant module would waste.
  • About 5.5% fewer connection pointsThe busbar-free front side improves safety and reliability and reduces failure rates, cutting O&M cost alongside high-temperature suppression and micro-crack resistance.

Specification

The manufacturer does not publish a numeric specification table for this product. The performance figures above are as published; a full datasheet with dimensions, electrical data and tolerances is sent by email against the model number and destination market.

Request the datasheet

Applications

  • Residential rooftops
  • Commercial and industrial rooftops
  • Distributed generation projects with limited roof area

Supplied from

Suzhou, Jiangsu, China — and PT. Hondol Material Indonesia, Batam, for customers served from Indonesia.

Get a price

Questions about HJ-B1-445W

Why does a busbar-free front side matter?

Every soldered connection is a potential failure point and a source of resistive loss. About 5.5% fewer connection points for the same DC capacity means measurably fewer field faults over a 30-year life.

Can the product warranty really run to 25 years?

The published terms are a 15-year product warranty extendable to 25 years, plus a 30-year power warranty. The extension terms are confirmed per order.

Does it pair with microinverters?

Yes. Module-level MPPT is a natural fit for the partial-shading tolerance this module is designed around, and Hondol supplies both residential and C&I microinverters.

Related products

Same series first, then the rest of PV System Products.

HJ-132-710W

HJ-132-710W

710 W of n-type TOPCon output per module, for projects where the balance-of-system bill is bigger than the module bill.

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HJ-132-620W

HJ-132-620W

Up to 23% efficiency from n-type bifacial double-glass with MBB half-cell construction, and a low open-circuit voltage that lets you build longer strings.

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HJ-B1-520W

HJ-B1-520W

1.8 mm thick, 2.9 kg/m², bends to a 0.3 m radius — the world's first 520 W hail-resistant, micro-crack-free flexible crystalline silicon module.

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MiT Series

C&I Solar Microinverter

5,000 W three-phase, 20 A input, IP67, with Sub-1G communication stable to 400 metres.

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Get HJ-B1-445W quoted against your own construction.

Send the module format, the annual volume and the destination market. The reply carries the price, the lead time and the certificate.