Custom LiPo batteries: when no listed size fits
Custom LiPo work covers custom dimensions, curved outlines, high-discharge and high-temperature designs and special protection circuits. It starts from your enclosure and your electrical requirements, not from a catalogue number.
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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The custom route exists because devices are not standard. A wearable band curves, a medical instrument has an odd cavity, a sensor housing allows only a thin slab. The factory profile describes the custom scope plainly: custom design, new mould development and electrical performance optimisation under ODM, and flexible production lines, large-volume manufacturing, precise quality control and reliable delivery under OEM. From engineering samples to mass production, the described scope covers design verification, testing, production, packaging, documentation and logistics.
The one model listed under the custom family, the 702551, is a 3.7 V, 900 mAh cell with KC and CE markings on its listing, a 500-cycle life, a 10-piece minimum order and an enquiry range of $5.57–6.85 for that listing. It illustrates what a custom listing looks like, but it is not a template: your custom cell will have its own size, capacity, protection and terms, agreed after the factory sees your requirements.
A useful custom inquiry contains the enclosure drawing or the cavity dimensions, the voltage and capacity target, the peak current, the operating temperature range, and the documents you need. Certificates are available upon request for the finished design, and the certificate set should be discussed before tooling, because it can affect the design and the schedule. Expect the conversation to move through an engineering sample before mass production — that sample step is where fit and performance get proven, not after a bulk order.
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 · OEM / ODM process · Shape selection · Wholesale buying
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.