Taiwan BSMI Certification: New Rules for Chargers & UPS

Taiwan's Bureau of Standards, Metrology and Inspection (BSMI) has issued final amendments that reshape Taiwan BSMI certification requirements for battery chargers, certain power adapters, and uninterruptible power supplies (UPS). Manufacturers and importers active in the Taiwanese market now enter a transition period, with the key mandatory requirements becoming enforceable on 1 July 2027.

The amendments were issued on 8 September 2026 and published by BSMI on 10 September 2026, taking effect immediately upon issuance for application purposes, ahead of full mandatory enforcement in mid-2027.

Regulatory Background

BSMI, operating under Taiwan's Ministry of Economic Affairs, regulates product safety through mandatory inspection schemes tied to specific Chinese National Standards (CNS). Power supply equipment including chargers, adapters and UPS units has historically been certified under standards that predate newer product categories such as DC-input chargers and non-ICT charging applications now common across consumer and industrial markets.

This announcement amends two existing inspection regulations: the rules governing electric power supply equipment (battery chargers) and the rules governing information products (uninterruptible power supply systems). The intent is to close coverage gaps and align applicable standards with more current safety benchmarks.

Taiwan BSMI Certification: Summary of Key Changes

The amendment introduces three distinct changes across the affected product categories.

1. Expanded Coverage for Battery Chargers

Mandatory inspection now extends to battery chargers used in non-ICT applications and chargers with DC input, categories that were not previously subject to mandatory BSMI inspection.

From 1 July 2027, newly covered products must complete Registration of Product Certification (RPC) before entering the Taiwanese market. BSMI is already accepting applications, allowing manufacturers to begin certification preparation ahead of the enforcement date.

Exclusions: medical devices, telecommunications terminal equipment, and specified electric vehicle chargers remain outside the scope of this amendment.

Notably, the requirement distinguishes market placement from customs clearance: a BSMI certificate is not required to complete import formalities, but the inspection process must be completed before the product is placed on the market.

2. Revised Standards for Power Adapters

Covered static converters must now comply with CNS 61558-1:2026. Covered switching power supplies have an alternative compliance route combining CNS 61558-1:2026 with CNS 61558-2-16:2025.

These standards apply to the specific adapter categories defined in the official announcement, so manufacturers should confirm which category applies to their product line before selecting a certification route.

3. Updated UPS Requirements

UPS inspection standards are updated to CNS 62040-1:2022 and CNS 14757-2:2019.

Unlike the market-placement model applied to newly covered chargers and adapters, UPS products retain pre-market inspection or certification controls before import or factory release, with the applicable procedure depending on the conformity assessment route selected.

Certification Impact Summary

Product Category	Change	New/Updated Standard	Conformity Route	Market Control Point
Battery chargers (non-ICT, DC input)	Newly brought into mandatory scope	Standards per official announcement	Registration of Product Certification (RPC)	Before market placement (not required for customs clearance)
Static converters (power adapters)	Standard revision	CNS 61558-1:2026	RPC	Before market placement
Switching power supplies	Alternative compliance route added	CNS 61558-1:2026 + CNS 61558-2-16:2025	RPC	Before market placement
Uninterruptible Power Supplies (UPS)	Standard revision	CNS 62040-1:2022 + CNS 14757-2:2019	Inspection or certification (route-dependent)	Before import or factory release

What This Means for Manufacturers

For manufacturers and importers supplying battery chargers, power adapters or UPS equipment to Taiwan, this update carries several practical implications:

• New certification obligations for previously unregulated products. DC-input and non-ICT chargers that never required BSMI approval now need RPC before market entry this is a net-new compliance step for many product lines.

• Standards migration for existing certified products. Power adapters and UPS units already certified under older CNS versions will eventually need to transition to the revised standards at renewal or new application.

• No immediate customs impact for newly covered chargers, but market placement without completed inspection creates compliance exposure, since the certificate is required before sale even though it is not required for import clearance.

• Grandfathering protects current certificate holders, but only until expiry — this is a planning window, not a permanent exemption.

• Labeling and disclosure obligations remain in force alongside the technical standard changes, so documentation packages need to be reviewed holistically, not just against the new test standards.

  
  

Companies with active or planned BSMI certificates for these product categories should treat this as a compliance planning trigger now, rather than waiting for the 2027 deadline.

Timeline and Required Actions

Date	Milestone	Recommended Action
8 September 2026	Final amendments issued by BSMI	Review the official announcement and confirm whether your product portfolio falls within the expanded scope
10 September 2026	Amendments published; applications accepted	Begin voluntary early applications for RPC where products are newly in scope
Now – June 2027	Transition period	Audit current certificates, expiry dates, and applicable standards; plan testing and documentation updates; confirm adapter/charger category classification
1 July 2027	Mandatory enforcement begins	New and renewal applications must demonstrate compliance with revised standards; newly covered chargers must hold RPC before market placement
Ongoing after 1 July 2027	Existing certificate validity	Certificates issued under prior standards remain valid until expiry; series model additions permitted if main type is unchanged

Key Takeaway

Taiwan's BSMI certification framework for chargers, adapters and UPS equipment is expanding in scope and updating its technical baseline, with a defined runway to 1 July 2027. Manufacturers and importers that map their product categories against the new requirements now rather than at the compliance deadline will avoid certification bottlenecks and market-entry delays.