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Custom lithium battery packs for device makers · Made in Shenzhen, shipped worldwide

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Lithium cells

Lithium Polymer (LiPo) Cells

A lithium polymer cell is a rechargeable lithium cell in a flat pouch instead of a metal can. The soft case makes it thin, light and easy to shape, so it suits slim devices. Jetray supplies LiPo cells and builds them into custom packs.

  • Engineer reply within 24 h
  • UN38.3, IEC 62133, MSDS
  • Ships worldwide from Shenzhen
Lithium Polymer (LiPo) Cells
Quick quoteEngineer reply in 24 h
DocumentsUN38.3, IEC 62133 and MSDS for the model you order
Private labelYour brand name, model number and cartons
Stock and customIn-stock items ship without waiting; custom packs take 1 to 2 months
WorldwidePacked to the shipping rules, sent from Shenzhen
01

LiPo pouch or Li-ion cylindrical?

LiPo pouchLi-ion cylindrical
ShapeFlat, thin, many sizesRound, fixed sizes
WeightLightHeavier for the same energy, because of the metal can
Fit in slim devicesGoodLimited by the round shape
CaseSoft, needs support in the packRigid
Swelling riskCan swell with overcharge, heat or ageLower
Pack buildingNeeds a holder or case designEasy to hold in standard holders

Neither is better in all cases. Choose by the shape of the space, the current and the way the device is used.

02

Where LiPo cells are used

Wearables and small devices

Thin cells that fit a slim housing. Wearable packs

Drones and RC models

Cells with a high discharge rate. Drone and RC packs

Medical meters and monitors

Small packs in handheld devices. Medical device batteries

Heated clothing

Slim packs in pockets. Heated apparel packs

03

Series and parallel: 1S to 8S

LiPo cells are joined to reach the voltage you need. Each series cell adds about 3.7 V nominal.

LayoutNominal voltage (approx.)
1S3.7 V
2S7.4 V
3S11.1 V
4S14.8 V
6S22.2 V
8S29.6 V

Parallel cells add capacity. A multi-cell LiPo pack needs a balance connector and a BMS or protection board.

04

What to tell us

Tick what you already have. It goes into the quote form at the end of the page.

What to tell us for a Jetray quote
0 of 5 ready

Need LiPo cells?

Send the size, capacity and quantity. We reply within 24 hours.

05

Custom shapes

Pouch cells can be made in many sizes. If no standard size fits, tell us the space and we propose a cell or a layout that does.

06

Safety

Pouch cells can swell if overcharged, overheated or used past their age. A pack should have protection, a case that supports the cells and a charger that suits them. Stop using a swollen pack.

07

Order size, documents and delivery

Send the size, capacity, quantity and application. We confirm the cell, the lead time and the documents. UN38.3, IEC 62133 and MSDS documents are available. We ship worldwide from Shenzhen.

08

Reading LiPo specs

TermMeaning
Capacity (mAh)How much charge the cell stores
C-rateDischarge current as a multiple of capacity. A 1000 mAh cell at 10C can give 10 A
Nominal voltageAbout 3.7 V per cell
Thickness, width, lengthSize of the pouch, including the tabs
Tab typePosition and length of the leads

For a drone or fast tool, check the continuous discharge current. For a wearable, check the thickness and the edge.

09

Design allowance for swelling

A pouch cell can grow thicker over its life and when it is charged. Leave a little room in the housing, and do not press the cell hard against a wall. Tell us the space, and we plan the cell and the holder together.

10

Protection and connectors

  • A protection board for a single cell, or a BMS for several.
  • A balance connector for multi-cell packs.
  • Connector types: JST, Molex, XT60 and others, or a plug of your own.
  • Wire length and exit position.

Send a sample of the connector if it is unusual.

Lithium Polymer Cells: protection and connectors
FAQ

Frequently asked questions

Both are lithium-ion technology. LiPo refers to the pouch format. Datasheets from the maker give the exact construction.

Yes, for multi-cell packs. Tell us the connector type.

Often yes within a range. Send the dimensions and we confirm.

A small connector that lets a charger see each cell's voltage and keep them equal.

At a partial charge, in a cool and dry place, in a safe container.

Yes. Tell us the connector.

Get a quote

Need LiPo cells?

Send the size, capacity and quantity. We reply within 24 hours.

Your requirement

Your lithium polymer cells request

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