Battery Charging Precautions


Thinklabs One Digital Stethoscope is powered by an internal rechargeable Lithium Ion battery. Lithium Ion batteries power many devices today - mobile phones, tablets, medical devices. However, they must be handled properly to ensure safe use. Please take the following seriously to avoid injury, fire or explosion:


We have tested One with the included USB Charger. We cannot guarantee the safety of charging One with other USB chargers.


If One becomes hot while charging, disconnect immediately and allow it to cool. Do not move One while it is cooling. Contact us immediately if One warms up during charging.


Charge One at ambient temperatures between 5C-35C (41F - 95F). If the battery temperature is out of range, a safety circuit may shut off charging until the battery temperature falls within an acceptable range.


Disconnect the Charger from the AC Mains or from the stethoscope once charging is complete.


Do not attempt to open or replace the battery.


If your stethoscope fails to charge, Contact Us.


        For more information, go to Battery Charging Instructions.