1. Motorola Solutions Internal Information
Section to 4 Tests: T1 to T4
Propose allowance for the activation of cell or battery protective devices to be exempted from recoverable open voltage condition of 90% limit
There are Li ion rechargeable cells or batteries with integrated resettable and/or non-resettable protective devices that are designed to activate
Example of such device is the non-resettable current interrupting safety device commonly known as CID in cylindrical cells 
August 2015 Meeting
Presentation
Device is designed to break open due to internal cell pressure or mechanical conditions 
1/2/2019
Motorola Solutions Internal Information

2. Motorola Solutions Internal Information
Section to 4 Tests: T1 to T4
As a normal occurrence, internal cell pressure increases due to cycling, elevated temperature exposure, such as T.2 test 72deg.C
The voltage loss limit aims to detect internal cell anomalies
However, the CID activation (causing the low voltage measurement) reflects the normal safety device functionality
The same logic as above applies to the battery safety protective device mechanisms
August 2015 Meeting
Presentation
1/2/2019
Motorola Solutions Internal Information

3. August 2015 Meeting Presentation
Section to 4 Tests: T1 to T4 Proposal for change
Example Requirement
Cells and batteries meet this requirement if there is no leakage, no venting, no disassembly, no rupture and no fire and if the open circuit voltage of each test cell or battery after testing is not less than 90% of its voltage immediately prior to this procedure. The requirement relating to voltage is not applicable to test cells and batteries at fully discharged states or activation of resettable or non-resettable protective devices (such as thermal device) integral to the cell or battery.
August 2015 Meeting
Presentation
1/2/2019
Motorola Solutions Internal Information

4. Motorola Solutions Internal Information
Draft for Review
Comments from August 2015 Meeting (2nd informal WG meeting in Washington DC)
Replace the word “device”, as it can be confused with equipment, with other names, such as safety protective electronic components, etc
What is the flow chart after the safety component activation?
Would the samples continue the rest of the tests of not?
Would the samples be replaced?
Can the samples be “repaired” and test continued?
The safety component activation must be validated by thorough analysis to ensure the low voltage is not due to other defects
1/2/2019
Motorola Solutions Internal Information

5. Test Flow for Activated Safety Mechanisms in Cells and Batteries Proposal
Draft
V loss < 90%
Is the safety mechanism resettable and accessible?
Suspected safety mechanism activated?
Can the safety mechanism be replaced? Y
Continue testing
T1 to T4
Stop before External Short T5 Y N N
Perform battery analysis N Y Y
Replace the safety device
Reset the safety device
Does the analysis confirm the safety mechanism activation? N Y
Continue testing
Verify voltage
Fail for voltage loss Y
New Samples:
The new samples shall be conditioned per section to the same state as the sample they have replaced.
Replace the activated safety mechanism samples with new samples
Perform T5 Test with the remaining un-activated safety component and new samples
1/2/2019
Motorola Solutions Internal Information

6. Section 38.3.4.1 to 4 Tests: T1 to T4 Proposal for change
Draft
Example Requirement
Cells and batteries meet this requirement if there is no leakage, no venting, no disassembly, no rupture and no fire and if the open circuit voltage of each test cell or battery after testing is not less than 90% of its voltage immediately prior to this procedure. The requirement relating to voltage is not applicable to test cells and batteries at fully discharged states or activation of safety protective mechanism component (such as thermal device) integral to the cell or battery.
The cell and/or battery safety protective component activation must be validated by analysis. The testing shall proceed as follows:
If the safety protective component is accesible and/or resettable, the component shall be resetted, and testing shall continue with the restored safety component samples
If the safety protective component is not ressetable and/or accessible, the testing shall still continue with all samples until External Short Circuit T5. The cell and/or battery protective mechanism activation must be validated by analysis. The affected samples shall be replaced with the new samples. The new samples shall be conditioned per section to the same state as the sample they have replaced. All samples (remaining intact and new replacement) shall be subjected to External Short Circuit T5 Test.
1/2/2019
Motorola Solutions Internal Information