> For the complete documentation index, see [llms.txt](https://docs.arkelectron.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.arkelectron.com/products/power/ark-12s-payload-power-module.md).

# ARK 12S Payload Power Module

The ARK 12S Payload Power Module is rated for 100A continuous battery current at 20C ambient. It is recommended to run multiple power modules in parallel if more than 100A continuous current is required.

The board uses an INA238 digital power monitor with a 0.1mΩ shunt to measure voltage and current over I2C. A 5.2V 6A regulator outputs power to the avionics using a 6 pin Molex CLIK-Mate connector that matches the pinout on the ARK PAB Carriers. A 12V 6A regulator outputs power to payloads using a 4 pin Molex CLIK-Mate connector.

{% content-ref url="/pages/xPUaHGS6SBg2kSkVDYya" %}
[PX4 Instructions](/products/power/ark-12s-payload-power-module/px4-instructions.md)
{% endcontent-ref %}

{% content-ref url="/pages/30SdbHvkt1wOhaalZ5ut" %}
[ArduPilot Instructions](/products/power/ark-12s-payload-power-module/ardupilot-instructions.md)
{% endcontent-ref %}

{% content-ref url="/pages/lFDst56mwZaSl5S6tmXO" %}
[3D Model](/products/power/ark-12s-payload-power-module/3d-model.md)
{% endcontent-ref %}

### Cooling

When operating at high battery current and/or high 5V/12V regulator output current, it is recommended to actively cool the board.

### Pinout

#### 5V/I2C - 6 Pin 2.00mm Molex [CLIK-Mate 502494](https://www.molex.com/en-us/part-list/502494)

Mating plug [5024390600](https://www.digikey.com/en/products/detail/molex/5024390600/2380425)

Pre-crimped wires [0797581014](https://www.digikey.com/en/products/detail/molex/0797581014/6346648)

<table><thead><tr><th width="134">Pin Number</th><th width="237">Signal Name</th><th>Voltage</th></tr></thead><tbody><tr><td>1</td><td>VBRICK</td><td>5.2V</td></tr><tr><td>2</td><td>VBRICK</td><td>5.2V</td></tr><tr><td>3</td><td>SCL</td><td>3.3V</td></tr><tr><td>4</td><td>SDA</td><td>3.3V</td></tr><tr><td>5</td><td>GND</td><td>GND</td></tr><tr><td>6</td><td>GND</td><td>GND</td></tr></tbody></table>

#### 12V - 4 Pin 2.00mm Molex [CLIK-Mate 502494](https://www.molex.com/en-us/part-list/502494)

Mating plug [5024390400](https://www.digikey.com/en/products/detail/molex/5024390400/2380424)

Pre-crimped wires [0797581014](https://www.digikey.com/en/products/detail/molex/0797581014/6346648)

<table><thead><tr><th width="134">Pin Number</th><th width="237">Signal Name</th><th>Voltage</th></tr></thead><tbody><tr><td>1</td><td>12V</td><td>12.0V</td></tr><tr><td>2</td><td>12V</td><td>12.0V</td></tr><tr><td>3</td><td>GND</td><td>GND</td></tr><tr><td>4</td><td>GND</td><td>GND</td></tr></tbody></table>


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