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Compact rectangular battery chassis with USB-C port, four Grove connectors, status LEDs and power button

Seeed Studio

Seeed Studio Wio Terminal Battery Chassis 650mAh

SKU CH-Y0XX-WR32G

Adds a 650 mAh Li-Po battery, USB-C charging up to 660 mA, a BQ27441 fuel gauge and four Grove ports to the Wio Terminal

  • Product typeSensors
  • 650 mAh Li-Po cell powers Wio Terminal projects
  • BQ27441-G1A fuel gauge reports exact charge state
  • USB-C port accepts up to 660 mA charging current
  • Four Grove analog/digital ports expand sensor options
  • Over-current and hiccup protection guards battery health

Battery Chassis for Wio Terminal

This chassis adds a built-in 650mAh lithium polymer battery to the Wio Terminal, turning the device into a portable sensor platform. It suits developers who need untethered data logging or field demonstrations without relying on a permanent USB supply. The unit includes four Grove analog and digital ports plus one I2C and one UART connector for sensor expansion.

Sustained Operation with Fuel Gauge

The BQ27441-G1A fuel gauge monitors the cell continuously, reporting remaining capacity during long logging sessions rather than only at start-up. Charging accepts a 4.75V to 5.25V supply at up to 660mA through the USB Type-C port, while over-current and hiccup protection guard the cell under prolonged load. Status LEDs show charging, discharging and 5V output states at a glance.

Simple Attachment, Sleep Mode Required

The chassis clips onto the terminal and draws power automatically when the battery switch is on. If the cell is disconnected the board enters a failure mode with a blinking green LED, so the battery must stay seated during use. Pressing the on-board button puts the unit into sleep mode for safety, extinguishing the rear LED until the next wake-up.

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Price $40.99
Typical for this category: the median of 255 items is $39.99.

Specifications

Product
Product typeSensors

Questions about this item

How hot or noisy does the chassis get when it runs continuously?

The board has no fan and no active cooling; it relies on passive heat dissipation from the BQ27441-G1A fuel gauge and the overcurrent protection circuitry.

What must I already own for the battery chassis to function?

You need a Seeed Studio Wio Terminal main board; the chassis attaches to its 40-pin connector and adds a 650 mAh Li-Po cell, USB-C charging at up to 660 mA, and four Grove analog/digital ports.

Will the chassis work with an older Wio Terminal revision I already have?

Yes — the chassis connects through the standard 40-pin header, so any Wio Terminal with that header can use the 650 mAh battery, the BQ27441-G1A gauge, and the Grove I²C/UART ports.

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