Cell technology: N-Type
Provisional evidenceDistributor product page
Sources
Seller-listed specification; not independently verified.
Distributor product page: SEG Solar 420W 108 Half-Cell N-Type Black Bifacial Solar Panel, SEG-420-BTD-BG Checked Sep 16, 2026
Location: technology
Provisional evidence
Bifacial: Yes
Provisional evidenceDistributor product page
Sources
Seller-listed specification; not independently verified.
Distributor product page: SEG Solar 420W 108 Half-Cell N-Type Black Bifacial Solar Panel, SEG-420-BTD-BG Checked Sep 16, 2026
Location: Product category
Provisional evidence
Front glass: 2.0 mm AR coating semi-tempered glass
Official datasheet
Sources
Printed as "Front Glass 2.0 mm AR coating semi-tempered glass" in SEG Solar's Yukon N Series SEG-XXX-BTD-BG-108Cells datasheet (SEG_DS_EN_2024V3.2, covers SEG-420-BTD-BG), captured on September 28, 2026. Confirmed by rendering page 2 and reading the image because the table's labels and values are laid out in separate runs in the extracted text.
Official datasheet: View Checked Sep 18, 2026 · Earlier document
Location: Datasheet page 2, Mechanical Specifications, Front Glass row
Documented
Back cover: 2.0 mm Semi-tempered glass
Official datasheet
Sources
Printed as "Back Glass 2.0 mm Semi-tempered glass" in SEG Solar's Yukon N Series SEG-XXX-BTD-BG-108Cells datasheet (SEG_DS_EN_2024V3.2, covers SEG-420-BTD-BG), captured on September 28, 2026. Confirmed by rendering page 2 and reading the image because the table's labels and values are laid out in separate runs in the extracted text.
Official datasheet: View Checked Sep 18, 2026 · Earlier document
Location: Datasheet page 2, Mechanical Specifications, Back Glass row
Documented
Frame: Black anodized aluminium alloy
Official datasheet
Sources
Printed as "Frame Black anodized aluminium alloy" in SEG Solar's Yukon N Series SEG-XXX-BTD-BG-108Cells datasheet (SEG_DS_EN_2024V3.2, covers SEG-420-BTD-BG), captured on September 28, 2026. Confirmed by rendering page 2 and reading the image because the table's labels and values are laid out in separate runs in the extracted text.
Official datasheet: View Checked Sep 18, 2026 · Earlier document
Location: Datasheet page 2, Mechanical Specifications, Frame row
Documented
Dimensions: 30 D × 1,134 W × 1,722 L mm1.2 D × 44.65 W × 67.8 L in converted
Provisional evidenceDistributor product page
Sources
Seller-listed specification; not independently verified.
Distributor product page: SEG Solar 420W 108 Half-Cell N-Type Black Bifacial Solar Panel, SEG-420-BTD-BG Checked Sep 16, 2026
Location: Dimensions
Provisional evidence
Weight: 24 kg53 lb converted
Distributor datasheet
Sources
Read from the datasheet this catalog row already cites, at https://cdn.myced.com/images/Products/ZZ0000/ZZ3098/00000/ZZ309800015_DS.pdf, from a row the sheet prints once for every model it covers, including SEG-420-BTD-BG. Printed value: "24.0 kg". Conditions as stated on that sheet. A value the sheet states more than once with different readings was not used.
Distributor datasheet: SEG-420-BTD-BG · Datasheet Checked Sep 16, 2026 · Earlier document
Location: PDF page 2, row "Weight"
Documented

Grounding (manual): A bonding or toothed washer is required to make proper and reliable electrical grounding connection with the anodized aluminum frame.; Consider using a lay-in lug, rated for outdoor use, if the module grounding conductor is to be larger than 10 AWG.
Official installation manual
Sources
Printed as "A bonding or toothed washer is required to make proper and reliable electrical grounding connection with the anodized aluminum frame." in section 3.8 (Grounding) of SEG's Installation Guide, Photovoltaic Module (Double-glass), 2026 V1.1, with the lay-in lug sentence from the same section. The section also allows devices listed and identified for grounding metallic module frames.
Official installation manual: SEG Solar Installation Guide, Photovoltaic Module (Double-glass) (U.S. UL 61730 edition, 2026 V1.1) Rev 2026 V1.1 · March 2026 · Checked Oct 1, 2026 · Earlier document
Location: PDF page 12, section 3.8 Grounding
Documented
Clamp or bolt torque (manual): 16 to 20 N·m
Official installation manual
Sources
Printed as "The reference torque value for M8 screw is 16~20N*M." in section 3.4 (Clamp Installation) of SEG's Installation Guide, Photovoltaic Module (Double-glass), 2026 V1.1; section 3.3 (Screw Installation) prints the same M8 value and 9~12N*M for M6 screws.
Official installation manual: SEG Solar Installation Guide, Photovoltaic Module (Double-glass) (U.S. UL 61730 edition, 2026 V1.1) Rev 2026 V1.1 · March 2026 · Checked Oct 1, 2026 · Earlier document
Location: PDF page 9, section 3.4 Clamp Installation
Documented
Series fuse: 30 A
Provisional evidenceDistributor product page
Sources
Seller-listed specification; not independently verified.
Distributor product page: SEG Solar 420W 108 Half-Cell N-Type Black Bifacial Solar Panel, SEG-420-BTD-BG Checked Sep 16, 2026
Location: series-fuse-rating
Provisional evidence
Mounting methods and clamp zones (manual): Screw installation (Table 2): Four outer mounting holes, +5400/-2400 Pa; Clamp installation (Table 3), clamp length ≥50mm, Mounting rail cross the long side, L=A/4±50mm: +5400/-2400 Pa; Clamp installation (Table 3), clamp length ≥50mm, Mounting rail parallel the long side, L=A/4±50mm: +2400/-2400 Pa; Clamp installation (Table 3), clamp length ≥50mm, Mounting rail cross the short side, W=B/4±50mm: +3600/-2400 Pa; Clamp installation (Table 3), clamp length ≥50mm, Mounting rail parallel the short side, W=B/4±50mm: +1600/-1600 Pa
Official installation manual
Sources
Printed as "SEG-XXX-BMD-BG(1722×1134×30/35) SEG-XXX-BTD-BG(1722×1134×30/35) +5400/-2400 Four outer mounting holes" in Table 2 of SEG's Installation Guide, Photovoltaic Module (Double-glass), 2026 V1.1, with the clamp row quoted here from Table 3 (columns Installation Drawing 1 to 4) and any tracker or special-method row for this series. The hole position for Table 2 was read from rendered page 8 (the table's installation drawing labels). Loads are in Pa as printed; the manual does not say whether they are test or design loads.
Official installation manual: SEG Solar Installation Guide, Photovoltaic Module (Double-glass) (U.S. UL 61730 edition, 2026 V1.1) Rev 2026 V1.1 · March 2026 · Checked Oct 1, 2026 · Earlier document
Location: PDF page 8 (Table 2, screw installation), PDF page 10 (Table 3, clamp installation)
Documented
Voc temperature coefficient: -0.25 %/°C
Official datasheet
Sources
Printed as "-0.25 %/°C" in View; the specification table row pairs it with the Voc temperature coefficient label (read from the rendered table: "Voc Temperature Coefficient | -0.25 %/°C").
Official datasheet: View Checked Sep 18, 2026 · Earlier document
Location: Specification table, temperature coefficients
Documented

Published claims and calculations, not independent test results.

Documents

3 on file

PDF
ViewOfficialcdn.myced.comOfficial datasheet
Source details
Revision
Not stated
Revision date
Not stated
Linked from the GreenTech Renewables product page with link text "View".
Location: ZZ309800015_DS.pdf
Retrieved Sep 18, 2026
Original PDF preserved byte for byte, found linked from the GreenTech Renewables listing https://www.greentechrenewables.com/product/seg-solar-420w-108-half-cell-n-type-black-bifacial-solar-panel-seg-420-btd-bg. The revision is whatever was published at this URL on the access date; exact variant coverage inside the document was not separately verified and no later revision was checked.
SHA-256: c6481df4862f32caee65371e506dc7e5afe4ef1de6f3b4e41a6ee0ec8dfe4ebe
Archived copies
Archived copy of a document published by cdn.myced.com. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived backup Revision not recorded · 0.66 MB
Archived copy, unaltered, kept as a record of what cdn.myced.com published. Original address: https://cdn.myced.com/images/Products/ZZ0000/ZZ3098/00000/ZZ309800015_DS.pdf. Copyright and takedown
Source first found
Sep 18, 2026, 10:49 AM PDT
This copy captured
Sep 18, 2026, 10:49 AM PDT
Archived
Sep 18, 2026, 10:49 AM PDT
File details
Original source
Embedded dates are file metadata, not independent proof of publication.
SHA-256: c6481df4862f32caee65371e506dc7e5afe4ef1de6f3b4e41a6ee0ec8dfe4ebe
Open
PDF
SEG Solar Installation Guide, Photovoltaic Module (Double-glass) (U.S. UL 61730 edition, 2026 V1.1)OfficialSEG SolarOfficial installation manualMarch 2026
Source details
Revision
2026 V1.1
Revision date
March 2026
Archived copy captured on 2026-10-01.
Location: Cover page (version) and section 1.1, Applicable Products (scope)
Retrieved Oct 1, 2026
SEG Solar's own installation guide for its double-glass modules, captured 1 October 2026 from segsolar.com, where SEG's Installation Manual download page links it; printed as 2026 V1.1, valid from March 2026, and it states the modules are certified for safety through UL 61730. Section 1.1 (Applicable Products) lists the series it covers by type and size. It gives series-level mounting methods with loads, torques and grounding instructions; it prints no model ratings. Manufacturer instructions, not independent tests.
Archived copies
Archived copy of a document published by SEG Solar. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived backup 2026 V1.1 · 1.22 MB
Archived copy, unaltered, kept as a record of what SEG Solar published. Original address: https://www.segsolar.com/Public/Uploads/uploadfile/files/20260326/SEGInstallationManualBGEN.pdf. Copyright and takedown
Source first found
Oct 1, 2026
This copy captured
Oct 1, 2026, 11:00 AM PDT
Archived
Oct 1, 2026, 11:00 AM PDT
File details
Original source
Pages
16
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 7d0f07accd6509093440d34fb042b23c86ff958674bd985ec8d6b573e29eb8d3
Open
WEB
SEG Solar 420W 108 Half-Cell N-Type Black Bifacial Solar Panel, SEG-420-BTD-BGGreentech RenewablesDistributor product page
Source details
Revision
Not stated
Revision date
Not stated
Location: Product listing
Retrieved Sep 16, 2026
Open

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Archived copy of a document published by cdn.myced.com. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.

Archived backup Revision not recorded · 0.66 MB

Archived copy, unaltered, kept as a record of what cdn.myced.com published. Original address: https://cdn.myced.com/images/Products/ZZ0000/ZZ3098/00000/ZZ309800015_DS.pdf. Copyright and takedown

Source first found: Sep 18, 2026, 10:49 AM PDT
This copy captured: Sep 18, 2026, 10:49 AM PDT
Archived: Sep 18, 2026, 10:49 AM PDT

File details

Original source

Embedded dates are file metadata, not independent proof of publication.

SHA-256: c6481df4862f32caee65371e506dc7e5afe4ef1de6f3b4e41a6ee0ec8dfe4ebe

SEG Solar Installation Guide, Photovoltaic Module (Double-glass) (U.S. UL 61730 edition, 2026 V1.1)

Archived copy of a document published by SEG Solar. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.

Archived backup 2026 V1.1 · 1.22 MB

Archived copy, unaltered, kept as a record of what SEG Solar published. Original address: https://www.segsolar.com/Public/Uploads/uploadfile/files/20260326/SEGInstallationManualBGEN.pdf. Copyright and takedown

Source first found: Oct 1, 2026
This copy captured: Oct 1, 2026, 11:00 AM PDT
Archived: Oct 1, 2026, 11:00 AM PDT

File details

Original source

Pages: 16

Embedded dates are file metadata, not independent proof of publication.

SHA-256: 7d0f07accd6509093440d34fb042b23c86ff958674bd985ec8d6b573e29eb8d3

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Warranty

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Sellers

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Price history

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Evidence score

Not enough comparable data0% documented

The Evidence score uses the priorities you choose. It counts published documents, such as certificates and warranty terms, and it compares a documented figure with the best documented figure of the same kind. It does not count owner reviews, and it is not a verdict on product quality or on how many people have reviewed it. A low score can mean little is documented, or that a documented figure is below the best of its kind. Undisclosed data scores 0.

Missing for this product: Module efficiency needed; Product warranty needed; Power warranty needed; Power temperature coefficient needed; First-year degradation needed; Weight / watt needed.

Not enough comparable data for a score. None of this panel's scored inputs has a documented, sourced value yet. On file but not counted, because it is provisional, warned or has no source: module efficiency, power temperature coefficient, weight / watt.

Each input is scored against the best documented value for a solar panel, and weight per watt against the best in the panel’s own format. A documented value always earns points; an undisclosed one earns 0 and is listed as missing. Certificates and unsupported claims do not add points.

Module efficiency21.51 % · not confirmed0.0 / 26.0

Seller-listed specification; not independently verified.

A value is on file but is not counted: it carries a warning or is not confirmed.

Distributor product page: SEG Solar 420W 108 Half-Cell N-Type Black Bifacial Solar Panel, SEG-420-BTD-BG Checked Sep 16, 2026

Power temperature coefficient-0.3 %/°C · not confirmed0.0 / 16.0

Seller-listed specification; not independently verified.

A value is on file but is not counted: it carries a warning or is not confirmed.

Distributor product page: SEG Solar 420W 108 Half-Cell N-Type Black Bifacial Solar Panel, SEG-420-BTD-BG Checked Sep 16, 2026

Weight / wattNot documented0.0 / 5.0

A documented panel weight and rated output are required.

A value is on file but is not counted: it carries a warning or is not confirmed.

Distributor datasheet: SEG-420-BTD-BG · Datasheet Checked Sep 16, 2026 · Earlier documentDistributor product page: SEG Solar 420W 108 Half-Cell N-Type Black Bifacial Solar Panel, SEG-420-BTD-BG Checked Sep 16, 2026

Not documented, 0 points: Product warranty, Power warranty, First-year degradation.

Each input is compared with the best documented value among published solar panels, weight per watt within the same panel format · Method version 0.4

How it works

Certificates

1 on fileCEC listed

CECProduct / system scope unresolvedClaimedListed when checked

Model SEG-420-BTD-BG listed on the California Energy Commission PV Module List (data unchanged since October 1, 2026; downloaded October 11, 2026) under SEG Solar Inc., as "SEG-420-BTD-BG", CEC listing date 2024-02-01. This is an equipment listing, not UL certification or complete-system approval.

Models: SEG-420-BTD-BG

Issued: Not stated
Valid from: Feb 1, 2024
Expiry: Not stated
Issuer checked: Not checked

Issuer record: CEC PV Module List, official spreadsheet (data unchanged since October 1, 2026; downloaded October 11, 2026) October 1, 2026 · Checked Oct 10, 2026 · Earlier document

Certificate guide

Parts and accessories

No sourced accessories or replacement parts listed yet.

Model history

Model identity

Model: SEG-420-BTD-BG

Manufacturer SKU SEG-420-BTD-BG

Observed Oct 11, 2026

CEC: claimed

Product / system scope unresolved. Model SEG-420-BTD-BG listed on the California Energy Commission PV Module List (data unchanged since October 1, 2026; downloaded October 11, 2026) under SEG Solar Inc., as "SEG-420-BTD-BG", CEC listing date 2024-02-01. This is an equipment listing, not UL certification or complete-system approval.

Issuer record: CEC PV Module List, official spreadsheet (data unchanged since October 1, 2026; downloaded October 11, 2026) October 1, 2026 · Checked Oct 10, 2026 · Earlier document

Community discussions

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Recalls / legal notices

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