IEC 62877-1:2016

Electrolyte and water for vented lead acid accumulators - Part 1: requirements for electrolyte

IEC 62877-1:2016 applies to electrolyte and their components used for filling vented lead-acid batteries, for example dry charged cells or batteries, and for electrolyte replacement or electrolyte density adjustment of batteries in operation. This international standard defines the composition, purity and properties of electrolyte to be applied where specific instructions from the battery manufacturer are not available. The contents of the corrigendum of May 2017 have been included in this copy.

Electrolyte et eau pour accumulateurs plomb-acide ouverts - Partie 1: Exigences pour l'électrolyte

L'IEC 62877-1:2016 s'applique à l'électrolyte et à ses composants utilisés pour le remplissage des batteries plomb-acide ouvertes, par exemple les éléments chargés secs ou les batteries chargées sèches et pour le remplacement de l'électrolyte ou l'ajustement de la densité de l'électrolyte des batteries en fonctionnement. La présente norme internationale définit la composition, la pureté et les propriétés de l'électrolyte qui doivent être appliquées en l'absence d'instructions spécifiques du fabricant de batteries. Le contenu du corrigendum de mai 2017 a été pris en considération dans cet exemplaire.

General Information

• Status: Published
• Publication Date: 26-Jan-2016
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.220.20 - Acid secondary cells and batteries
• Technical Committee: TC 21 - Secondary cells and batteries
• Drafting Committee: PT 62877 - TC 21/PT 62877

Relations

• Corrected By: IEC 62877-1:2016/COR1:2017 - Corrigendum 1 - Electrolyte and water for vented lead acid accumulators - Part 1: Requirements for electrolyte
• Effective Date: 05-Sep-2023
• Revised: IEC 62877-1:2023 - Electrolyte and water for vented lead acid accumulators - Part 1: Requirements for electrolyte
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62877-1 ®
Edition 1.0 2016-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrolyte and water for vented lead acid accumulators –
Part 1: Requirements for electrolyte

Électrolyte et eau pour accumulateurs plomb-acide ouverts –
Partie 1: Exigences pour l'électrolyte

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IEC 62877-1 ®
Edition 1.0 2016-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrolyte and water for vented lead acid accumulators –

Part 1: Requirements for electrolyte

Électrolyte et eau pour accumulateurs plomb-acide ouverts –

Partie 1: Exigences pour l'électrolyte

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.220.20 ISBN 978-2-8322-3139-5

– 2 – IEC 62877-1:2016 © IEC 2016
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references. 5
3 Terms and definitions . 5
4 Preparation of electrolyte for lead-acid accumulators . 7
5 Physical properties of diluted sulfuric acid as electrolyte . 7
5.1 Dependence of acid density on temperature . 7
5.2 Relationship of electrolyte density on the content of sulfuric acid at 25 °C . 8
5.3 Electrolyte density compared to the state of discharge . 8
6 Requirements of sulfuric acid used as electrolyte . 8
6.1 Impurities of sulfuric acid of higher concentration degrees . 8
6.2 Impurities of filling acid . 8
6.3 Impurities of operating electrolyte . 9
7 Storage of electrolyte . 10
8 Remedy in the event of damage due to electrolyte . 10
Bibliography . 12

Table 1 – Correction of density from measuring temperature to reference/specified
temperature . 7
Table 2 – Acid density versus percentage of sulphuric acid at 25 °C . 8
Table 3 – Maximum allowed impurities of diluted sulfuric acid as filling electrolyte
for lead-acid batteries in the density range ≤ 1,30 kg/l . 9
Table 4 – Maximum allowed impurity of diluted acid as operating electrolyte
for lead-acid batteries in the density range ≤ 1,30 kg/l . 10

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROLYTE AND WATER FOR VENTED
LEAD ACID ACCUMULATORS –
Part 1: Requirements for electrolyte

FOREWORD
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International Standard IEC 62877-1 has been prepared by IEC technical committee 21:
Secondary cells and batteries.
The text of this standard is based on the following documents:
FDIS Report on voting
21/874/FDIS 21/881/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – IEC 62877-1:2016 © IEC 2016
A list of all parts of the IEC 62877 series can be found, under the general title Electrolyte and
water for vented lead acid accumulators, on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
The contents of the corrigendum of May 2017 have been included in this copy.

ELECTROLYTE AND WATER FOR VENTED
LEAD ACID ACCUMULATORS –
Part 1: Requirements for electrolyte

1 Scope
This part of IEC 62877 applies to electrolyte and their components used for filling vented
lead-acid batteries, for example dry charged cells or batteries, and for electrolyte replacement
or electrolyte density adjustment of batteries in operation. This international standard defines
the composition, purity and properties of electrolyte to be applied where specific instructions
from the battery manufacturer are not available.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applie
...