SKU : BB025
Standard : UN 38.3 Purpose: These tests simulate mechanical abuse from an impact or crush that may result in an internal short circuit.
The test sample cell or component cell is to be placed on a flat smooth surface. A 15.8 mm ± 0.1 mm diameter, at least 6 cm long, or the longest dimension of the cell, whichever is greater, Type 316 stainless steel bar is to be placed across the centre of the sample. A 9.1 kg ± 0.1 kg mass is to be dropped from a height of 61 ± 2.5 cm at the intersection of the bar and sample in a controlled manner using a near frictionless, vertical sliding track or channel with minimal drag on the falling mass. The vertical track or channel used to guide the falling mass shall be oriented 90 degrees from the horizontal supporting surface.
The test sample is to be impacted with its longitudinal axis parallel to the flat surface and perpendicular to the longitudinal axis of the 15.8 mm ± 0.1 mm diameter curved surface lying across the center of the test sample. Each sample is to be subjected to only a single impact.
Cells and batteries meet this requirement if their external temperature does not
exceed 170 oC and there is no disassembly, no rupture and no fire during the test and within six hours after the test.