![]() ![]() ![]() Duration of the short circuit condition is based on the size of the battery and described in UN 38.3. T.6: Crush Test Test T.5: External Short CircuitĬells and batteries under test should be stabilized at 57 ± 4☌ (measured on the external case) and subjected to one short circuit condition (resistance of less than 0.1 ohm). Testing that is required to demonstrate compliance with UN 38.3 includes: France, Japan, Korea and Switzerland also require forced internal-short circuit testing for cells. Variations were adopted by multiple countries including the European Union (EN 62133), United States of America (UL 62133), and Canada (CAN/CSA E62133).īattery testing as per IEC 62133-2 is very similar to UN 38.3 but it also includes thermal abuse, free fall, overcharging, and continuous low-rate charging. Within the last couple of years, IEC 62133-2 became a de facto standard to demonstrate international compliance within the end product. In addition to safety during transportation, manufacturers must cover safety at the final point of application (IT equipment, consumer electronics, tools, electric vehicles, etc.) by demonstrating compliance with national regulations, industrial requirements or international standards. Signature with name and title of signatory as an indication of the validity of information provided.Reference to the revised edition of the Manual of Tests and Criteria used and to amendments thereto, if any and.Reference to assembled battery testing requirements, if applicable (i.e.List of tests conducted and results (i.e., pass/fail).Cell or battery model number or, alternatively, if the test summary is established for a product containing a cell or battery, the product model number.Physical description of the cell/battery and.Lithium ion or lithium metal cell or battery.Description of cell or battery to include at a minimum:.A unique test report identification number.Name of the test laboratory to include address, phone number, email address and website for more information.Cell, battery, or product manufacturer’s contact information to include address, phone number, email address and website for more information.Name of cell, battery, or product manufacturer, as applicable.While Rev. 6 allowed for the statement "The UN 38.3 test was passed successfully," since January 1, 2020, every shipper must submit a documented summary which includes the following information: 7, 2019 incorporated an increased level of clarification and standardization with regards to pre-transport testing. The "Manual of Tests and Criteria" (ST/SG/AC.10/11/) has been regularly updated and amended, and in the early 2000s, a section covering the transportation of lithium metal and lithium-ion batteries (UN 38.3 or T1-T8) was included. Since 1984, the United Nations has been issuing recommendations and creating a standard on the transport of dangerous goods. If you are already running the battery at the edge of it's limits (pulse), there is no margin of safety.Īnyone who is sub-ohming below 0.2 ohms are operating on the pulse rating, and are operating over spec for any 18650 battery currently on the market.ETC Airdrie > Testing > UN/DOT 38.3 Lithium Battery Testing If your amp draw is safely in the continuous discharge range, your coil could act almost like a fuse and burn out before the battery is stressed. If your setup relies on a pulse rating, it's instantly over spec. Any failure, mechanical or electronic, that fires the mod will operate in the 'continuous' mode. Which would be why we shouldn't rely on any pulse rating. It is inappropriate for a consumer device to operate in the pulse range of its battery. It is exceeding the sustainable and intended discharge rate of the battery. The pulse rating is a condition in which the battery is on basically a buildup to failure. You should not operate your device above the continuous rating if you can help it. It is never safe and not within the intended operating parameters of the battery. Every manufacturer or vendor seems to have their own definition of what the pulse rating is to them.Ī pulse discharge rating is any use above the continuous discharge rating. The "pulse or burst" discharge rating is not a specification standard within the battery industry. It is a determination made by the manufacturer and represents the amp limit a battery can be safely used before it will fail. The "continuous discharge rating" in amps is the standard specification for amp limits within the battery industry. Continuous Discharge Ratings vs Pulse (Burst) Discharge Ratings ![]()
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