Specify the cell and mounting as one assembly
An RFQ that only names a coin-cell size can leave major details unresolved. State the exact cell model or required family, chemistry and electrical needs, then describe how the battery connects to the product. A holder-based design and a preassembled terminal design have different service and manufacturing implications. Ask the supplier to identify the complete supplied part, including any terminal suffix or customer drawing number. That full identity should follow the product through quotation, sample testing and receiving inspection.
Provide a controlled PCB and terminal drawing
Show the available footprint, height, keep-out areas, polarity and intended orientation. For terminals, confirm spacing, dimensions, materials or finishes where specified, and the approved assembly method. Use the manufacturer's current drawings as the starting point and ask about any custom requirement explicitly. A photograph may show the general shape but cannot reliably define tolerances or pin positions. Mechanical engineering and electronics teams should review the same document before ordering samples so that the proposed part can be tested in the actual device.
Review contact and retention needs
Describe how the product is handled and whether it sees vibration, repeated service access or other mechanical demands. A correct footprint does not by itself establish reliable contact in every environment. Plan evaluation of the chosen mounting arrangement within the finished product. If the battery is replaceable, define the approved replacement and user access procedure. If it is not replaceable, make that service approach clear. The product design should address the risk of the cell becoming loose or accessible during foreseeable use.
Add packaging and compliance questions
Ask how the cells will be protected against short circuits and damage during delivery and production handling. State the destination market and sales format so that packaging and product requirements can be assessed correctly. For products containing coin cells, involve compliance specialists in reviewing compartment security, warnings and instructions. CPSC publishes United States guidance on these topics; requirements elsewhere must be checked for the intended market. A supplier quotation should identify what is included, rather than implying that a bare cell resolves the finished product's obligations.
Make sample approval traceable
Request samples with the proposed terminal configuration, drawing revision and lot identification. Check PCB fit, assembly compatibility and performance using the real duty cycle. Record the accepted version and require notification before changes to the cell, terminal or packaging. Include expected order quantities, schedule and document needs in the RFQ, while asking the supplier to confirm current availability and commercial terms. This creates a practical route from an initial Jetray coin-battery inquiry to an approved OEM part with fewer assumptions left for production.
Sources & further reading
Prepared for the coin cell batteries collection. General engineering guidance does not replace a model-specific datasheet or application validation. Source review: 4 November 2026.