Battery knowledge · Testing methods
Forced discharge test
Driving a cell past empty into reversal with an external supply, to show that it survives what happens to a weak cell pushed below zero in a series string. UN 38.3 test T.8 puts each cell in series with a 12 V DC supply at its maximum discharge current; it must not disassemble or catch fire within seven days.
- Also called
- UN 38.3 T8, T.8 forced discharge, reverse charge test
Example
Testing methods: an example situation
Resistance immediately after a current step can differ from a ten-second value because slower polarization contributes.
Read Forced discharge test alongside Abuse testing in this context. Deliberately driving cells and packs beyond their limits — overcharge, crush, nail penetration, external short, heating, drop — to see how they fail. Standards define each test and rank the outcome on a hazard scale from no effect to explosion.
Use in Lemonergy
Record specimen, state, instrument, temperature and timing.
This is a reference concept. No executable Lemonergy block has been verified for this term.
References & further reading
Further reading on this topic
These sources provide broader context; they are not presented as citations for every statement in this entry.
- Battery Test Manual For Electric Vehicles, Revision 3
Jon P. Christopherson · Idaho National Laboratory · 2015
Topic background · Performance characterization, pulse resistance/power, life testing and reference performance tests; historical 2015 edition.