Pouch battery cells: the cell underneath the pack
Pouch cells are the flat laminate cells from which LiPo batteries and packs are built. This page explains the cell level: what a pouch is, how it differs from a hard-case cell, and how to choose one.
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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A pouch cell seals its electrodes in a flexible aluminium laminate pouch instead of a metal can. The pouch is light and can be made thin, flat, round or curved, which is why it dominates wearables, cards, tags and slim devices. The same flexibility means the cell relies on the device enclosure for mechanical protection, and a pouch cell should never be used bare, bent sharply or punctured — the safety guide on this site explains the handling basics.
Cell-level buying differs from pack buying in what you must specify. For a cell, the critical facts are the outline dimensions, the thickness, the nominal voltage, the capacity and the tab position and length, because the cell must fit and connect inside your own assembly. For a pack, the factory handles wiring and protection; for a cell, your assembly does. Be clear about which one you are buying before you discuss price.
The cell listings behind this page are the 512 Li-polymer models, and the same listing rules apply: quote model number, capacity and size together, and confirm the certificate set, minimum order, enquiry price range and lead time for that listing. A cell that looks identical to another cell in a photograph may differ in capacity, tabs or terms — the listing, not the picture, is the record.
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 · Shape selection · Safety basics · LiPo packs
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.