Ultra-thin LiPo batteries: power that fits a millimetre budget
Twenty-four ultra-thin models for devices where thickness is the binding constraint — smart cards, tags, miniature medical devices and slim wearables. Thickness is stated per model, never as a family-wide figure.
Dimension-callout pouch outline — the site's recurring diagram motif. It is a schematic, not a photograph of a product, factory or customer project.
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Ultra-thin is a relative claim, and this site treats it that way. A cell described as ultra-thin for a smart card may still be too thick for a different card, and a cell that fits one wearable may not fit another. The only honest way to shop this family is to compare the thickness stated on each model's own listing against the cavity in your device, allowing room for the protection circuit and the wiring where the design includes them.
Typical applications in the listings include smart cards, RFID tags, miniature medical devices, digital products and toys. The representative model detailed on this site, the 142030, is a 50 mAh cell listed for smart cards, RFID tags and miniature medical devices, with a 1.4 mm thickness in its listing title. Other ultra-thin models differ in capacity, thickness and terms, and none of them inherits the 142030's values.
If your thickness budget is tighter than any listed model, the custom route is the right conversation — but bring the cavity drawing. A custom ultra-thin cell is a tooling and process question, and the factory needs the exact space, the voltage and the capacity target before it can say whether the shape is feasible.
How to choose in this family
Fix the shape first, then the voltage and series count, then the capacity. Check the exact model listing for its own minimum order, enquiry price range, lead time and certificate set — those values belong to that listing and do not transfer to other models. If no listed size fits your enclosure, the custom route covers custom dimensions and shapes; describe the enclosure rather than asking for a general price.
Related pages
LiPo batteries · Curved LiPo · Wearable devices · 142030 ultra-thin cell
How to place an inquiry, step by step
- Send the device facts. Tell us the device type, the available space (length, width and maximum thickness), the nominal voltage you need, the capacity or runtime you target, and the peak current if your device has motors, radios or heaters.
- Name the model or the shape. If a page on this site matches, quote its model number and listing details. If nothing matches, say so and describe the shape — flat, round, curved or ultra-thin — so the conversation starts on the custom route.
- Confirm documents and terms in writing. Ask for the certificate set for that exact model, confirm the minimum order, the listed enquiry price range and the lead time for that listing, and confirm payment and warranty terms before you pay. Terms stated for one model listing do not transfer to another model.
- Agree the sample step. Confirm whether the next step is a listed sample, an engineering sample for a custom shape, or a small trial order, and what test you will run on arrival — fit in the enclosure, runtime, or peak-current behaviour.
Send all of this in one message through the contact page: device type, space, voltage, capacity, peak current, model number if you have one, and the documents you need. That is the whole inquiry — one message, no account, no extra step.
What to send us now
Send one message with your device type, the space the battery must fit, the voltage and capacity you need, the peak current if it matters, and the model number if a page on this site already matches. Add the documents you need — certificates available upon request — and whether you need a listed model or a custom shape. Use the contact page and address it to the sales team by first name as published there. A specific message like that is what turns a catalogue of hundreds of models into a short, answerable question.