MiO

Precision Space · Small-Format

Every Millimeter
Counts.

Small-format custom pouch cells, coded thickness × width × length in mm — hundreds of stock sizes, or built to your exact dimensions.

Sub-mm ThinCoded by SizeCustom Form
Request a Quote View specs
Ultra-Thin battery product shot

Technical

Specifications

Sizing
Coded Thickness × Width × Length (mm)
Thickness
Ultra-thin — sub-1 mm available
Chemistry
Li-Polymer (LiPo)
Shapes
Rectangular / stepped / curved / round
Capacity range
10 – 1,500 mAh
Nominal voltage
3.7 V (3.8 / 3.85 V hi-volt option)
Protection
Integrated PCM / fuel gauge
Connector
micro-JST / FPC / soldered tabs
Cycle life
≥ 500 cycles
Operating temp
0 °C to 45 °C

Where it fits

Applications

Smart Wearables

Curved cells that follow the contour of a band or case.

Medical Sensing

Slim, biocompatible cells for patches and monitors.

Hearables & TWS

Tiny high-density cells for earbuds and charging cases.

Smart Cards & Tags

Ultra-thin cells for smart cards and IoT asset tags.

Process

Engineering & Testing

  1. 01

    Feasibility

    Form-factor & capacity feasibility report within 24h.

  2. 02

    Sample Tooling

    Low-volume shaped-cell prototyping.

  3. 03

    Safety Testing

    Crush, bend and over-charge validation.

  4. 04

    Pilot Run

    Consistency checks before volume production.

Questions

FAQ

How do the model numbers work?

Each model number encodes the cell dimensions — thickness, then width, then length in millimetres. Send us a code or your 3D envelope and we match an existing size or build to it.

Can you build a non-rectangular shape?

Yes — stepped, curved, round and custom outlines are routine. Send your 3D envelope and we'll return a feasibility report.

Is the cell safe against bending?

Shaped cells are validated for the intended curvature with crush and bend testing; we specify a safe bend radius.

Lead time for a custom shape?

Feasibility in 24h; samples typically in 2–3 weeks depending on tooling.

More from MiO

Explore other lines

Flagship · Heavy Load

Power Pack

Custom battery packs for cordless power tools — engineered for shock, heat and zero throttling under sustained load.

View details

High-Rate · Instant Burst

Drone Battery

High-C pouch-cell packs for UAVs — explosive instantaneous power with smart BMS telemetry over CAN / I²C.

View details

Next-Gen Energy Storage

Sodium-Ion

Next-generation sodium-ion cells for extreme cold and safe zero-volt storage — now open for pilot partnerships.

View details
Back to home

© 2026 MiO · Custom Battery Manufacturing