Battery Holder Design And Testing, ANSI, EIA, UL.

 

 

 

 

 

 

 

 

 

 

 

For testing new designs of battery holders, MPD has fabricated min-max sized battery slugs. The slugs are a great aid to our engineering staff in several ways:

  • Save time and money by not having to shop for several brands of batteries to confirm that your design works with common batteries.
  • More weight than a battery, generating more force during drop testing.
  • More durable than batteries when drop testing.
  • Will not short circuit, leak or require storage-handling precautions.    

 

 

The minimum – maximum, length and

width for common batteries is fairly wide.

 

Length

 

 

Height

 

Alkaline

Min

Max

 

Min

Max

D cell

59.5

61.5

 

32.3

34.2

C cell

48.5

50.0

 

24.9

26.2

AA cell

49.2

50.5

 

13.5

14.5

AAA cell

43.3

44.5

 

9.5

10.5

6 volt

23.9

25.2

 

12.0

13.0

9 Volt

46.5

48.5

 

34.5

26.5

Lithium

 

 

 

 

 

CR1/2AA

24.9

25.1

 

14.5

14.8

CR2/3A

33.5

34.5

 

16.0

17.0

CR123A

33.5

34.5

 

16.0

17.0

CR1632

15.8

16.0

 

3.0

3.2

CR2032

19.7

20.0

 

2.9

3.2

CR2325

22.6

23.0

 

2.2

2.5

CR2430

24.2

24.5

 

2.7

3.0

CR2450

24.2

24.5

 

4.6

5.0

CR2477

24.2

24.5

 

7.3

7.7

 

Dimensions shown are mm

 

 

IEC-ANSI standards

 

 

 

 

 

 

UL2069: Issue number 2, October 2001

 

This UL standard determines if batteries are properly retained by a holder.  50 insertion-extractions of the battery are followed by contact retention, conditioning, vibration and jarring tests. Notable in the test procedure is temperature conditioning with unplated copper slugs.

 

 

 

 

Coin cell battery holder in 60” drop test fixture per UL2069

 

We used wing nuts for quick mounting of the same PCB to either the jarring or drop test fixtures.

 

 

 

 

 

 

UL2069 Jarring test fixture

 PCB is mounted on rear side of ¾” thick  plywood board and struck by 2” steel sphere

 

 

 

 

 

 

UL2069 Jarring test fixture mounted vertically

 

For vertical test the 2” steel sphere is dropped down a tube.  Battery holder is mounted on rear of same board mounted horizontally.

 

 

 

 

EIA Specification number, EIA-540J000

 

The purpose of the specification is to provide standard test methods, gages and performance requirements for battery holders. Tests vibration, shock, contact resistance, solderability, temperature/humidity

 

 

The major difference between the UL & EIA tests is that continuity is continually monitored during vibration and mechanical shock in the EIA specification. Minor differences are contact resistance and solderability requirements. The EIA also has separate requirements for coin cell holders and cylindrical battery holders, under EIA-540J0AA & EIA540JAB.

 

 

ASTM F963, Toy Safety

 

Coin cell batteries are specifically exempted from the requirements. Limited requirements for a battery holder as the standards focus is on markings, circuit protection, harness wiring and limiting access to batteries without tools. Minor requirements for the battery holders connectors and wires flammability rating, V-0 and insulation heat resistance.

 

 

UL913

 

Intrinsically safe apparatus, ANSI/UL.  If you need to meet this requirement, contact our engineering dept or a professional industrial designer or engineering company.

 

 

  

Electronic Industries Alliance

Description

Contact

ANSI/EIA-540J0000 

Generic spec of battery sockets.

www.eia.org

ANSI/EIA-540J0AA

1/2A, 2/3A, A, AA battery holders

www.eia.org

ANSI/EIA-540J0AB

Coin cell battery holders

www.eia.org

 

 

 

ASTM International

 

 

ASTM F963

Toy safety standard

www.astm.org

 

 

 

BatteryHolders.org

 

 

Battery Holders

Battery and holder standards, newsgroups

BatteryHolders.org

 

 

 

Memory Protection Devices

 

 

Technical Area

Designs and application tips

Application notes

Index

Contact, cross reference, FAQ, forms

FAQ & Index

 

 

 

Underwriters laboratories, Inc.

 

 

UL2069

Coin, AAA to D cell battery holders

www.ul.com

UL913 (CSA157)

Intrinsically safe apparatus, ANSI/UL

www.ul.com

 

 

 

United States Patent Office

 

 

USPTO

Hundreds of US patents

www.uspto.gov

 

Product Safety Compliance

Batteries are considered safety critical components by compliance laboratories. A properly designed circuit with reverse current charging protection of lithium batteries is required, typically two blocking diodes in series or a voltage blocking component plus a current blocking component (diode-resistor combination). Plastic components like battery holders have safety requirements when part of a circuit containing any kind of battery or battery charging circuits. MPD’s drawings contain the necessary information to make your collecting of documentation for product safety easier.

Project check list

 

Design Considerations Checklist

 

Industry Links

 

Application tips