Published
What to bring to the review
- Which functions use the battery: controls, pump, heating or a combination
- Allowed input voltage and measured current over a complete cycle
- Usable enclosure space, mounting and service access
- Built-in charging or removable-pack charging arrangement
- Target markets, transport route and required evaluation
- Prototype quantity, development stage and production forecast
Separate energy demand from power demand
Record each battery-powered function and when it runs. A pump, control board and heater need different descriptions; do not assume every coffee machine uses its battery for heating. Include startup peaks, simultaneous loads, standby and the interval between cycles.
Nominal energy in watt-hours describes a quantity of energy, not the maximum current the pack can deliver. A brew-count target also needs the energy used per cycle, usable voltage range, conversion losses, temperature and shutdown conditions. Test these in the intended machine instead of deriving a promise from the capacity label alone.
Choose built-in or removable around the product
A built-in pack needs an agreed charging path, service procedure and physical separation from water and heat sources. A removable pack adds accessible contacts, retention, handling and an external charging interface to the design review. Neither arrangement is automatically the better choice.
Jinfan has worked on both arrangements in coffee machine development. The pack, host electronics, enclosure and charger interfaces need a shared definition. A similar-looking connector or matching nominal voltage alone does not establish compatibility.
- Provide a drawing showing the space actually available to the battery.
- Define who can remove the pack and whether removal is for routine use or servicing.
- Agree on host behavior during charging, low battery and protection events.
A documented built-in reference: 11.1 V, 3.2 Ah
One Jinfan built-in coffee machine reference is identified as INR18650-3S1P. Its supplied transport test documentation lists a 3S1P configuration, nominal voltage of 11.1 V, capacity of 3200 mAh and nominal energy of 35.52 Wh. Troy confirmed the built-in coffee machine application for this reference.
These values identify that reference; they are not a universal coffee machine pack or a claim that it can power any heater. The supplied UN 38.3 report is identified as DSP25112052-2. Its scope does not establish appliance certification, a brew count, charging time, cycle life or qualification of a different pack revision. Project-specific evidence must be reviewed with the engineering team.
Use the prototype to resolve integration questions
Begin with the host's confirmed input range, load information, physical envelope and intended charging arrangement. Mark unmeasured values as open items. Engineering can then review configuration, protection, interfaces and the sample scope without turning assumptions into product specifications.
Define what the sample evaluation must demonstrate in the machine: a complete operating cycle, startup and shutdown behavior, charging and physical fit. Record the pack and host revisions with the result. Small-batch sampling is available for project discussion; this page does not promise a fixed minimum order or delivery time.
Agree on the evidence before production
Confirm the released design revision, component definition, inspection criteria, host interface and responsibility for changes. Review the applicable transport and product requirements for the destination market with the responsible specialists. A transport report for a reference pack should not be presented as blanket compliance for an entire appliance.
Bring the outstanding questions to an engineering discussion. If confidentiality applies, use the private requirements-upload flow and agree on the disclosure scope; do not publish customer drawings in public comments or platform posts.