Our devices were tested with alkaline non-rechargeable batteries and based on these tests the lifespan of the batteries was calculated.

Why Airthings do not recommend rechargeable batteries?

There are several reasons for that:

  • Battery percentage will be incorrectly calculated for other battery chemistries since the voltage will be different when fully charged / new.

  • There are rechargeable lithium battery cells that have an internal DC/DC converter in order for it to produce a stable output voltage independent of charge level.

  • Some rechargeable batteries are not intended for this type of product where the average current consumption is very low.

  • There are batteries on sale, where one is intended for light loads and one for heavier loads like RC cars.

There is a lot to take into account here, therefore we cannot recommend that type of batteries.

The voltage of rechargeable batteries also behaves differently from the one in alkaline batteries- Batteries may have stable voltage for a longer time and then suddenly drop to very low voltage asking to be recharged. With low voltage, some of the devices' sensors will stop working in order to keep the device on.

You can, of course, opt to use rechargeable batteries, in such case we cannot guarantee how long will the sensors work correctly, as the voltage is different from brand to brand and we also cannot guarantee how often you will have to recharge the batteries.

Did this answer your question?