142030 ultra-thin LiPo battery: 50 mAh, 1.4 mm, for cards, tags and miniature medical devices
One ultra-thin listing, stated exactly: 50 mAh, with a 1.4 mm thickness in the listing title, listed for smart cards, RFID tags and miniature medical devices.
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 cells exist for devices where thickness is the whole problem. A smart card, an RFID tag and a miniature medical device all share the same constraint: the battery must disappear into a housing that is itself only a few millimetres thick. The 142030 listing answers that constraint with a 1.4 mm thickness stated in its title and a 50 mAh capacity — a small charge, but a charge that fits where a standard cell cannot go at all.
Fifty milliamp-hours will not run a power-hungry device, and this page does not pretend otherwise. It will run a low-power card, tag or sensor that sips current and sleeps between events, and the right question for this cell is not how much energy it holds in absolute terms but whether the device's average current, over its required operating life between charges, fits inside 50 mAh with margin. A card that draws microamps on average can live a long time on 50 mAh; a device that draws milliamps continuously cannot, and no thinness compensates for that arithmetic.
Specification as listed
| Model | 142030 |
|---|---|
| Capacity | 50 mAh |
| Thickness (listing title) | 1.4 mm |
| Applications as listed | Smart cards, RFID tags, miniature medical devices |
| Minimum order (this listing) | 3 pcs |
| Enquiry price range (this listing) | $1.85–2.35 |
| Lead time (this listing) | 7 work days |
| Chemistry | Polymer lithium battery |
Blank fields in the source listing are left blank here; no default value has been filled in. Prices on the company website are listed enquiry ranges for this listing, not confirmed transaction prices.
The listing states a 3-piece minimum order, an enquiry range of $1.85–2.35 and a 7-work-day lead time, all for this listing only. The small minimum order suits a fit-and-function test: place the cell in the real card or tag housing, confirm the thickness including any protection circuit and wiring, and measure the operating life under the real duty cycle before discussing volume. Note that the thickness figure comes from the listing title; confirm the measured thickness including tabs and protection with the supplier before tooling a housing around it.
Other ultra-thin listings in the family differ in capacity and thickness — some around a millimetre, others thicker — and in terms. This page does not carry the 142030's values to them, and a buyer comparing ultra-thin cells should compare listing by listing, with the device's cavity drawing in hand. If the cavity is tighter than 1.4 mm, or the runtime target exceeds what 50 mAh can deliver, the custom route is the honest next step, starting from the cavity drawing and the power budget.
For an inquiry based on this cell, state the housing thickness budget, the cavity outline, the device's average and peak currents, the required operating life between charges, and whether the cell needs a protection circuit integrated or handled by the device. Those facts determine whether the 142030 is a sample candidate or whether the design needs a different thin cell or a custom shape.
Related pages
Ultra-thin LiPo · Wearable devices · Capacity selection · Custom LiPo
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.