Curved LiPo batteries: cells that follow the wrist
Three curved models for wearable devices, where a flat cell would waste the curve of a band or a bracelet. The representative model is the 150732, a small curved cell listed for wearables.
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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Wearable bands curve, and a flat cell inside a curved band leaves dead space and can press unevenly against the enclosure. A curved pouch cell follows the band's arc, which lets the designer use more of the available volume and keep the device comfortable. The trade is capacity: a small curved cell holds a small charge, and the buyer should check runtime against the device's real power draw rather than assuming a curved cell behaves like a larger flat one.
The 150732 listing states 3.7 V, 20 mAh, size 1.5 x 7 x 32 mm, a 300-times cycle life and a 7-work-day lead time for that listing, with a minimum order of 10 pcs and an enquiry range of $1.60–1.88. The 302040 listing is a 200 mAh curved cell for wearables, and the 651458 listing is a 500 mAh curved cell listed for smart bracelets among other uses. Those are three different listings with different terms, and this page does not blend them.
For a new wearable, the practical question is the band's radius and the space along it. Send the band geometry and the runtime target, and the curved-cell conversation can start from a real shape instead of a general request for curved batteries.
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 · Wearable devices · 150732 curved cell · 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.