What to do when a pack vents, smokes or fails.
First response and isolation
Evacuate, isolate, ventilate, and let a venting pack finish — do not move it.
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Reporting, cleanup and investigation
Photograph everything before cleanup; the cause is usually in the first photo.
Maintenance & testing questions
Short answers to the ones that come up most.
How do I test a battery?
Resting voltage, then voltage under load, then internal resistance.
What maintenance does lithium need?
Terminals, ventilation and the BMS log — nothing else.
Is a swollen battery dangerous?
Yes — stop using it and replace it.
How should I store a pack?
About half charge, cool, disconnected.
When should I replace a battery?
When delivered capacity no longer meets the job.
