GBC Module with Single Glass Full-screen Mystic Black

Last verified 2026-10-06.

• Gokin describes this as a module built on its own N-type GBC back contact cells, with 108 cells behind a single sheet of glass in an all-black finish.
• The maker publishes a datasheet and product page but states no launch date, price or sales market, and the datasheet itself carries no date.
• A full governing warranty candidate has been recovered at GK-3-54HGFb family-template level. Exact model, sale-cohort, market and contractual applicability remain unresolved, so scored promotion stays held. Separately, the datasheet certification marks still need an exact certificate number and scope.
• The 24.5% figure applies only to the 500 W top bin; the 480 W model is rated at 23.5% efficiency.
• This record covers only the single glass GK-3-54HGFb and is not joined to Gokin's sibling models such as GK-3-54HGFDb or GK-3-54HGDb, which are separate products.
• Legal manufacturer as printed: Gokin Solar Co., Ltd.
• The global English warranty catalogue links a nine-page instrument whose filename identifies A2 and whose pages print REV. EN20250919 - LINEAR-BIFACIAL MODULE. Its covered-model table expressly lists GK-3-54HGFb-xxxM, separately from HGFDb and other families, with 25-year product and 30-year power terms. The numeric 480M to 500M codes are not individually printed. The title does not change this record's single-glass construction or establish a bifacial property.
• The policy is offered by Gokin Solar Co., Ltd. or its affiliates for original agreements dated on or after 19 September 2025. Page 9 makes the terms conditional on incorporation in the original agreement and permits modification there; page 7 restricts cover to the original sales region. This record does not establish a sales market, sale cohort or governing agreement. These are recovered family-template conditions, not confirmation of individual purchaser entitlement or Australian governing coverage.
• The warranty starts at the earlier of three months after delivery to the buyer or initial installation. The HGFb template states at most 1% first-year loss and 0.35% annual loss thereafter, with at least 88.85% output by year 30 (99 - 29 x 0.35). The basis is original manufactured nameplate Pmax excluding positive tolerance, at STC: AM1.5, 1000 W/m2 and 25 C cell temperature, with measurement error considered. Warranty output is not measured field yield.
• Claims must be notified through the after-sales online platform promptly and within 30 days of knowledge, with claimant, purchase/start date, model/serial, installation location and supporting evidence. Unauthorised returns put risk and expense on the customer. A mutually accepted independent laboratory can determine disputes; Gokin initially pays reasonable testing costs, but the customer must reimburse them if a breach cannot be confirmed. This is a claims process, not recovered independent performance testing.
• Gokin chooses repair, replacement, residual-value/output-gap refund or additional modules. Remedy shipping is assigned to Gokin under the stated delivery terms; the customer bears dismantling, repacking, installation and reinstallation and related expenses. Current price used for refunds is determined by Gokin, replacements do not extend the warranty, and substitute modules can be supplied when the original type is no longer available. The policy also assigns disposal costs to the customer unless Gokin retrieves modules.
• Transfer is conditional on written notice, full payment, whole assignment and any confirming agreements reasonably requested by Gokin; previously claimed benefits for the same root cause do not transfer again. Exclusions include unauthorised alterations, installation contrary to the manufacturing-date manual, relocation, specified damage events, corrosive/salt-water exposure, excess voltage, non-payment, unauthorised sales channels and loss of identifying labels. The governing law and dispute procedure follow the original agreement. No unconditional transfer, free labour, registration grace period or local statutory-rights conclusion is assigned.

• Gokin GK-3-54HGFb 480-500W datasheet (GK-3-54HGFb-AB-SG-F1 EN)https://www.gokinsolar.com/upload/goods/GK-3-54HGFb-AB-SG-F1%20EN-0909.pdf

  The maker's datasheet prints the product name, the five model codes, GBC cell type, 108 cells, single 3.2 mm glass, 480 to 500 W ratings with 23.5 to 24.5% module efficiency, headline product and linear power warranty years, certification marks and the legal entity.

• Gokin BC Series product pagehttps://www.gokinsolar.com/en/GOKIN-BC-Series

  The maker's product page lists GK-3-54HGFb in its BC Series with an N-Type GBC cell, 500 W maximum and 24.5% maximum efficiency, alongside separate sibling models.

• Gokin news: GBC modules in winterhttps://www.gokinsolar.com/en/news/339

  The maker states that Gokin GBC uses back-contact cell technology with no front-side gridlines.

• Gokin global English limited warranty, REV. EN20250919https://www.gokinsolar.com/upload/download/GKM%C2%B7TN-SW-P001-F004%20A2%20%20EN%20%E9%AB%98%E6%99%AF%E5%A4%AA%E9%98%B3%E8%83%BD%E5%85%89%E4%BC%8F%E7%BB%84%E4%BB%B6%E6%9C%89%E9%99%90%E8%B4%A8%E4%BF%9D%E4%B9%A6.pdf

  All nine physical pages read; covered-model table on page 1 and contractual-incorporation clause on page 9 visually checked. HGFb-xxxM family template recovered, numeric-model/market/cohort applicability held; no Australian policy transfer.