Where Unit Cost Actually Lives in a Custom Battery Pack BOM
Cell choice sets the floor, the BMS sets the ceiling. A line-by-line walk of a custom lithium-ion pack BOM and the design decisions that move unit cost.
Pack Bill-of-Material Cost Drivers
Cost drivers broken out by cells, BMS, housing, connectors, assembly, and test as the structure of a pack BOM cost model.
The BOM Lines Where Cell Chemistry Changes Pack Cost
Chemistry changes five pack BOM lines, not one. Here is how to force broken-out quotes and show a program team exactly where the cost difference comes from.
Five Pack Spec Clauses That Move Your Cost the Most
Rank the five pack spec clauses that move quote cost the most, from cell chemistry and BMS channels to enclosure tooling, connectors, and test scope.
Where the Cost of Going From IP67 to IP68 Really Comes From
Sealed connectors, gasket labor, leak-test yield, retest NRE, and lost serviceability are the IP67 to IP68 cost drivers. Here is how to normalize two bids.