DIY charger temperature sensor

February 8, 2021

The lithium based batteries are great but they can, sometimes, also be dangerous. While it is quite unlikely, the battery might overheat and even catch fire. One of the most dangerous parts of the battery life is charging. Exactly for this reason you get a warning not to charge the batteries untended just about on every battery pack, battery manual or charger manual.

We can, however, easily detect if something goes wrong while charging and if you have anything but a cheapest charger, you will probably be able to connect a temperature sensor to it and it will stop the charging process should the temperature raise over some threshold. Since most hobby chargers derive their design from the popular iMaxB6, chances are your charger will be able to use a sensor compatible with iMax’s.

You can buy such a sensor in a shop, although I find them to not be as easily available as the chargers themselves. But did you know you can do them yourself for a few EUR in just few minutes? Just check the my new article about that and make your charging process safer!