> For the complete documentation index, see [llms.txt](https://campus-rover.gitbook.io/lab-notebook/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://campus-rover.gitbook.io/lab-notebook/fiiva/infrastructure/batteries-and-chargers.md).

# Danger Signs with Batteries and Chargers

## Danger

LiPo batteries are dangerous. When mistreated they can cause a major fire. This is a serious concern and we ask you to be careful and take this seriously.

## Fire Extinguisher

There is a fire extinguisher in the lab. It is near the main door, on the left as you enter the lab.

## Danger signs

* When charging, LiPo batteries will become warm. As long as you can put your palm on it and keep it there for 10 seconds you are more or less ok.
* If a LiPo battery becomes hot to the touch, immediately unplug it and put it into one of the safety bags.
* If a LiPo battery starts emitting smoke or sparks, this is a fire emergency. Luckily we've not experienced this ever.
* If a LiPo battery deforms in any way, that is bulges out on one of the sides, that battery is defective and should not be used any more.

## Chargers

We have many different types of chargers.

## Technical Information

* [Battery Charging Instructions for Brandeis Robotics Lab](https://github.com/campusrover/labnotebook/blob/master/docs/battery_charging.pdf)
* [Battery Technical Specs](https://github.com/campusrover/labnotebook/blob/master/docs/battery_techinfo.pdf)


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