IEC 62485-4-2015 PDF

Full title and description

IEC 62485-4:2015 — Safety requirements for secondary batteries and battery installations - Part 4: Valve-regulated lead-acid batteries for use in portable appliances. This part specifies safety requirements for the accommodation, circuit arrangements and operation of sealed (valve‑regulated) lead‑acid cells and batteries used in portable appliances, and requires manufacturers to provide protective measures and user information to prevent misuse and injury.

Abstract

This first edition (2015) of IEC 62485-4 defines safety measures for VRLA (valve‑regulated lead‑acid) batteries when used in portable equipment. It covers electrical safety (polarity, overload and short‑circuit protection), safe handling, battery compartment design and ventilation, marking and disposal, and instructions for end users including precautions against thermal abuse, mechanical damage and gas release. The standard excludes secondary cells/batteries with alkaline or other non‑acid electrolytes.

General information

• Status: Published (current edition, stable until 2028).
• Publication date: 20 January 2015.
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 29.220.20, 29.220.30.
• Edition / version: Edition 1.0 (2015).
• Number of pages: 25.

Scope

Applies to safety aspects associated with the accommodation, arrangement of circuits and operation of sealed valve‑regulated lead‑acid cells and batteries in portable appliances. It requires equipment and battery manufacturers to prevent incorrect use (e.g., wrong polarity or incompatible cells), to provide protective measures to avoid injury in battery failure events, and to supply sufficient user information and marking. The standard does not apply to secondary cells/batteries with alkaline or other non‑acid electrolytes.

Key topics and requirements

• Design and construction of battery compartments to limit leakage, heat build‑up and mechanical damage.
• Measures to prevent incorrect polarity connection and to inhibit reversal of cells in series strings.
• Requirements for short‑circuit, overload and thermal protection; limits on permissible temperatures during use and charging.
• Ventilation and other measures to manage gas emission (hydrogen) and to prevent ignition inside enclosures.
• Safe handling, replacement and maintenance guidance; marking (recycling and waste symbols) and disposal instructions.
• Manufacturer information and end‑user instructions / warnings (charging, storage, disposal, first‑aid for electrolyte contact).
• Recommendations on matching cells (design, type, age) and on avoiding mixing different cells in a set.

These topics reflect the standard's core requirements for protecting users and equipment from electrical, chemical and fire/explosion hazards associated with VRLA batteries.

Typical use and users

Used by appliance manufacturers, battery suppliers, product safety engineers, compliance officers, test laboratories and regulatory bodies to specify and verify safe integration of VRLA batteries into portable devices (consumer and professional equipment). It is also referenced in user manuals and service instructions for equipment that contains or accepts VRLA batteries.

Related standards

Part of the IEC 62485 series (Safety requirements for secondary batteries and battery installations). Relevant related parts include IEC 62485-1 (General safety information), IEC 62485-2 (Stationary batteries) and IEC 62485-3 (Traction batteries). National/adopted versions appear as EN/EN IEC derivatives (for example EN IEC 62485-4:2018 / national adoptions).

Keywords

IEC 62485-4, VRLA, valve‑regulated lead‑acid, battery safety, portable appliances, battery compartments, marking, charging instructions, gas ventilation, over‑current protection, disposal.

FAQ

Q: What is this standard?

A: IEC 62485-4:2015 is the part of the IEC 62485 series that specifies safety requirements specifically for valve‑regulated lead‑acid (VRLA) secondary batteries intended for use in portable appliances.

Q: What does it cover?

A: It covers accommodation and compartment design, electrical protection (polarity, overload, short‑circuit), safe handling and replacement, ventilation and measures against gas hazards, marking and disposal, and the information manufacturers must supply to end users. It excludes batteries with alkaline or other non‑acid electrolytes.

Q: Who typically uses it?

A: Appliance and battery manufacturers, product safety engineers, conformity assessment bodies, test labs and regulatory authorities use the standard to design, assess and document safe battery integration in portable equipment.

Q: Is it current or superseded?

A: This is the first edition published on 20 January 2015 and is shown as the published/stable edition with a stability date (review) set by IEC in 2028; users should check national adoptions or amendments in their jurisdiction for any later updates.

Q: Is it part of a series?

A: Yes — it is Part 4 of the IEC 62485 series (Safety requirements for secondary batteries and battery installations). Other parts address general safety information (Part 1), stationary batteries (Part 2) and traction batteries (Part 3).

Q: What are the key keywords?

A: Valve‑regulated lead‑acid (VRLA), portable appliances, battery compartments, charging instructions, polarity protection, gas ventilation, marking, disposal, battery safety.