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IoT project with battery and potential for moisture
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IoT project with battery and potential for moisture

by sensorcheck on Sun Mar 08, 2020 8:39 pm

We are working with the Lithium Ion Battery Pack - 3.7V 6600mAh (https://www.adafruit.com/product/354) in a water resistant enclosure for a long-battery-life IoT application. There's a potential for moisture and condensation inside the enclosure over time. Are these batteries safe in a potentially moist environment? If this is not ideal is there an alternative battery solution that comes to mind with similar mAh? Thanks for any help you can provide,

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Re: IoT project with battery and potential for moisture

by adafruit_support_bill on Mon Mar 09, 2020 5:49 am

The Lithium cells themselves are sealed. But moisture could find its way into the connectors or the protection circuit.

Mounting the battery with the leads exiting from the bottom will help protect against any drips finding their way into the circuitry.

Similarly, arranging connections so that the JST plug is pointing up will tend to keep moisture draining away from the contacts.

Inside the box, desiccant packs can help to control the moisture. Heating pads can also be used to keep temperatures above the dew-point, but that's not always practical in a battery powered system.

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Please be positive and constructive with your questions and comments.