01 · QUESTION / INTENT
Design for irregular duty, harsh environments and service constraints that automotive averages can hide.
02 · DIRECT ANSWER
Start with the machine’s real work cycle: traction, lift/hydraulic peaks, idle periods, opportunity charging, vibration, dust/water, temperature and service access. Prioritise the cell whose power/energy envelope and mechanical/thermal integration remain robust under the worst repeatable shift, not the highest catalogue energy density.
03 · DECISION TABLE
| Decision factor | Decision direction | Confirm before approval |
|---|---|---|
| Work cycle | Capture peaks, idle and partial cycling by shift. | Time-series current, SOC, temperature and charging events. |
| Environment | Design for shock, vibration, contamination and temperature. | Mounting, enclosure, cooling path and field measurements. |
| Service | Balance compactness with inspectability and replacement. | Module access, diagnostics, spares and downtime process. |
04 · ENGINEERING EXPLANATION
Use the highest repeatable shift plus fault and seasonal cases. Check low-SOC peak voltage sag, regenerative or charging acceptance, thermal soak during idle and imbalance created by partial cycling.
05 · APPLICATION / MARKET MAPPING
Forklifts, mining equipment, AGVs, port machinery and construction equipment differ substantially in shock, charging opportunity, shift length and downtime cost; one industrial label is not a duty specification.
06 · EVIDENCE AND TEST CONDITIONS
- Measured duty-cycle and environmental profile.
- Cell/pack validation covering vibration, temperature, peaks, charging and service events.
07 · RISKS / NOT SUITABLE WHEN
- Average current can hide short peaks that drive voltage and heat limits.
- Automotive validation cannot be assumed to cover machine-specific mounting and environment.
08 · FAQ
Are high-cycle cells always best?
Not if power, low-temperature operation, mechanical integration or serviceability is the binding requirement.What data should a fleet collect?
Current, voltage, SOC, temperature, charge events, alarms, idle time, payload/work and downtime.BUYING COMMITTEE ANSWERS
Engineering
Owns measured duty and machine-specific integration tests.Procurement
Owns supply, spares, service and change terms.Quality
Owns lot traceability and field-failure feedback.Compliance / Logistics
Owns equipment/product obligations and shipment configuration.Finance / Project
Models uptime, energy, maintenance and replacement cost.Management
Chooses the platform with best lifecycle productivity and service resilience.10 · PROJECT CTA