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The photo of the short-circuit – 4000 Amp

17.May 2021

The direct short circuit of the terminals of the LFP cell. The internal resistance of this type of the cells is usually bellow 0.30 mOhm. It means that one cell is able to generate up to 10 000 Amps of short circuit current. When adding the resistance of the terminals and the resistance of the metal object, the real current may be between 4000 to 6000 Amps.

Since the large capacity cells are able to provide high short circuit currents, it is always important to protect against accidental short circuits. See some more suggestions:

Internal Resistance of the Winston Battery Cells
Protection when working with batteries
A simple solution to protect against short-circuit

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