Confirm voltage compatibility first
Record the controller’s supported voltage range and the charger’s output specifications. A nominal voltage or marketing designation is not the full operating range. The pack’s fully charged voltage and low-voltage behavior must be compatible with the complete vehicle system.
Separate energy from power
Energy determines how much work the battery can deliver over time; current capability determines whether it can support a particular load. A larger Ah rating does not automatically mean a pack supports a higher peak motor current. Ask for continuous current, peak current, allowed peak duration and the associated temperature conditions.
Estimate energy using a real duty cycle
As a first arithmetic estimate, nominal energy in Wh equals nominal voltage multiplied by capacity in Ah. Actual range then depends on usable energy and vehicle energy consumption. Rider and cargo mass, speed, terrain and weather affect consumption, so a road-test profile is more useful than an unsupported range promise.
Check physical integration
Provide the battery compartment drawing, mounting points, connector type and cable routing. Confirm whether the pack must be removable and how it is handled during charging. The mechanical and electrical interfaces should be agreed before a sample is built.
Prepare a quotation checklist
Send the vehicle application, voltage window, normal and peak current, target range, dimensions, charger details, communication needs and expected quantity. Yinan’s motorcycle catalog includes 60V, 64V, 72V and 96V designations; the exact configuration is confirmed for the project.
Further Reading
Texas Instruments: Battery management design functions
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