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Power Banks with Integral
Cells or Batteries
2
Power Bank With Removable
Single Cell Battery
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Batteries as Integral
Part of Equipment
Equipment Containing Integral Batteries –
Equipment containing a battery or single
cell battery that is not intended to be
removed or replaced during the product’s
useable life.
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T5 – External Short
+
Charge
Circuitry
DC Jack
Charge
Circuitry
DC Jack
(Short here)
Most equipment with integral batteries
contain charging circuitry that cuts off current
when battery is charged to prevent overcharge.
Shorting the exposed terminal (DC Jack) does not
short the battery because the positive path is open
when the charger is not inserted.
Battery
Testing could be conducted by contacting exterior points of unit (e.g., connectors, sockets)
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Proposed Changes to “Scope”
of UN 38.3 Tests
38.3.2 Scope
38.3.2.1 All cell types shall be subjected to tests T.l to T.6 and T.8. All
non-rechargeable battery types, including those composed of
previously tested cells, shall be subjected to tests T.1 to T.5. All
rechargeable battery types, including those composed of previously
tested cells, shall be subjected to tests T.l to T.5 and T.7. In addition,
rechargeable single cell batteries with overcharge protection shall be
subjected to test T.7. A component cell that is not transported
separately from the battery it is part of needs only to be tested
according to tests T.6 and T.8. A component cell that is transported
separately from the battery shall be tested as a cell. A cell or battery
that is an integral part of the equipment it is intended to power that is
transported only when installed in the equipment, may be tested in
accordance with the applicable tests when installed in the equipment.
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Proposed Changes to T5
Short Circuit Tests
38.3.4.5.2 Test procedure
The cell or battery to be tested shall be temperature stabilized so
that its external case temperature reaches 55 ± 2 °C and then the
cell or battery shall be subjected to a short circuit condition with a
total external resistance of less than 0.1 ohm at 55 ± 2 °C. This
short circuit condition is continued for at least one hour after the
cell or battery external case temperature has returned to 55± 2 °C.
When testing an integral battery that is installed in the equipment
it is intended to power, the short circuit shall be conducted by
contacting exterior points of the battery (e.g., connectors, sockets).
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Changes to Test Requirements
Test
Change
T1 – Altitude
Test may be conducted with battery in equipment
T2 – Thermal
Test may be conducted with battery in equipment
T3 – Vibration
Test may be conducted with battery in equipment
T4 – Shock
Test may be conducted with battery in equipment
T5 – External Short Circuit Test may be conducted with battery in equipment.
Testing to be conducted by contacting exterior
points of battery (e.g., connectors, sockets)
T7 – Overcharge
Test conducted with battery in equipment, if
applicable. (Most equipment comes with
overcharge protection and recent amendments to
T.7 account for these designs.)
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Website for Declarations of Conformity
with UN Lithium Battery Tests
• Declarations of Conformity (DOC) frequently
requested by carriers, freight forwarders,
government agencies, etc.
• PRBA exploring possibility of establishing website for
posting DOC
• Searchable by battery model number, product
number/name, company name, brand name
• Battery information on DOC: Grams of lithium metal
(e.g., ≤ 2 grams); Voltage/Ah/Wh rating; year tested;
contact information; links to company websites
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Sample Declaration
of Conformity
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Sample
Declaration of
Conformity
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Sample
Declaration of
Conformity
(Page 1 of 2)
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Sample
Declaration of
Conformity
(Page 2 of 2)
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