IRImplementing rule
ETSO-C173a
NICKEL-CADMIUM, NICKEL METAL-HYDRIDE, AND LEAD-ACID BATTERIES
1 Applicability
This ETSO provides the requirements which Nickel-Cadmium, Nickel Metal-Hydride, and LeadAcid Batteries that are designed and manufactured on or after the applicability date of this ETSO must meet in order to be identified with the applicable ETSO marking.
2 Procedures
- 2.1 General
Applicable procedures are detailed in CS-ETSO, Subpart A.
- 2.2 Specific
None.
3 Technical Conditions
- 3.1 Basic
- 3.1.1 Minimum Performance Standard
Standards set forth in the RTCA DO-293A, Minimum Operational Performance Standards (MPS) for Nickel-Cadmium, Nickel Metal-Hydride, and Lead-Acid Batteries, dated 12/2/2009, as amended according to Appendix 1 to this ETSO.
3.1.2 Environmental Standard
Nickel-Cadmium, Nickel Metal-Hydride, and Lead-Acid Batteries shall be tested according to the conditions specified in RTCA DO-293A.
Where the RTCA DO-293A quotes the RTCA DO-160 standard, the applicable DO160 standard revision is defined in CS-ETSO, Subpart A, paragraph 2.1.
- 3.1.3 Computer Software
See CS-ETSO, Subpart A, paragraph 2.2.
- 3.1.4 Electronic Hardware Qualification
See CS-ETSO, Subpart A, paragraph 2.3.
- 3.2 Specific
None.
- 3.2.1 Failure Condition Classification
See CS-ETSO, Subpart A, paragraph 2.4.
4 Marking
- 4.1 General
Marking as detailed in CS-ETSO, Subpart A, paragraph 1.2.
- 4.2 Specific
At least one major component shall be marked permanently and legibly with all the information in RTCA DO-293A, section 1.10, as modified by Appendix 1.
5 Availability of Referenced Document
See CS-ETSO, Subpart A, paragraph 3. [Amdt ETSO/11]
APPENDIX 1 TO ETSO-C173A -MINIMUM PERFORMANCE STANDARD FOR NICKEL-CADMIUM, NICKEL METAL-HYDRIDE, AND LEAD-ACID BATTERIES AMENDMENT TO RTCA DO-293A REQUIREMENTS
ED Decision 2016/013/R
| RTCA/DO-293A section and title: | Amendment: |
|---|---|
| 1.10.1, Battery Marking | It shall be added to the bottom of the list of Manufacturer's markings: 11. End Point Voltage (EPV) |
| 2.3.1, Rapid Discharge Capacity at 23 °C | It shall be deleted at the end of the paragraph and the Test Method: 'or the manufacturer recommended cutoff voltage' |
| 2.3.2, Rapid Discharge Capacity at - 30 °C | It shall be deleted at the end of the paragraph and the Test Method: 'or the manufacturer recommended cutoff voltage' |
| 3.12, Electrolyte Resistance | It shall be applied ONLY to heater blankets of this section the following: Testing method and evaluation criteria of MIL-PRF-8565 can be utilised in lieu of the testing method and evaluation criteria stipulated in paragraph 3.12 of RTCA /DO-293A. |
[Amdt ETSO/11]
IR · ETSO-C173a — CS-ETSO · ED Decision 2016/013/R · CS-ETSO Easy Access Rules · EAR revision 14 Aug 2026