# Select Power Sources ## Power Connection Once bysense is out of the case you can select the power source. The main connection to the robot is a XT90 power connection which can be found on the side of the computation unit in the center of bysense:

{% hint style="info" %} make sure your connected power source does not pull in any direction is not under tension installed. Any tension applied to the connection can break it. {% endhint %} Depending on your planned mission you can choose the type of power source: ## Autonomy Development With the development of high level applications or autonomy features you might need a battery as power supply to be mobile with bysense. For type of development this we recommend to use two 18V 8Ah batteries connected in series for required performance to carry payload and walk up terrain.

## Locomotion Development For low level controller development of bysense e.g. Locomotion related we recommend to use a lab power supply with 36V and min. 10A. We recommend to use a cable shorter 1.5m which is made for the XT90 rated current.

Typically within a lab you can start with a suited power supply first and move on later with the batteries as power supply. We typically combine the power supply with a debug cage. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://bywerks.gitbook.io/bysense/mission-preparation/select-power-sources.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.