Safety information
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Never place batteries or devices on or in heating devices, such as microwave
ovens, stoves, or radiators. Batteries may explode when overheated.
Never crush or puncture the battery. Avoid exposing the battery to high
external pressure, which can lead to an internal short circuit and overheating.

Protect the device, batteries, and chargers from damage

Avoid exposing your device and batteries to very cold or very hot
temperatures.
Extreme temperatures can damage the device and reduce the charging
capacity and life of your device and batteries.
Prevent batteries from coming into contact with metal objects, as this can
create a connection between the + and – terminals of your batteries and
lead to temporary or permanent battery damage.
Never use a damaged charger or battery.
Caution: Follow all safety warnings and regulations when using your device in restricted areas

Do not use your device near other electronic devices

Most electronic devices use radio frequency signals. Your device may interfere
with other electronic devices.

Do not use your device near a pacemaker

Avoid using your device within a 15 cm range of a pacemaker, if possible, as
your device can interfere with the pacemaker.
To minimise possible interference with a pacemaker, use your device only on
the side of your body that is opposite the pacemaker.

Do not use your device in a hospital or near medical equipment

that can be interfered with by radio frequency

If you use medical equipment, contact the equipment manufacturer before
using your device to determine whether or not the equipment will be affected
by radio frequencies emitted by the device.