What to test, in what order, on a finished pack.
Electrical, thermal and mechanical tests
Insulation, capacity, balance and a thermal soak — in that order.
Sampling, records and traceability
Traceability back to the cell batch is what makes a defect investigable.
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LiFePO4 questions
Short answers to the ones that come up most.
What makes LiFePO4 different?
Lower energy density than NMC, far better stability and cycle life.
How long does a pack last?
4,000–6,000 cycles at 80% DOD.
Charge in the cold?
Not below 0°C without heating.
Maintenance?
Terminals, ventilation, BMS log.
Safe?
The safest lithium chemistry in wide use.
