Tips and Safety Guidelines for Lithium-Ion Batteries
112
AirCard 790 Mobile Hotspot
Battery Tips
•
Charge batteries in a room-temperature environment, which is generally between 68° F
and 79° F (20° C and 26° C). Charging may be temporarily disabled if the battery
temperature exceeds 113° F (60° C).
•
If a battery exhibits significantly shorter runtime or discharge capacity compared to new, it
may have reached the end of its reasonable lifetime; consider replacing it.
•
A battery that does not charge or exhibits excessive charging time may have reached the
end of its life and may need to be replaced.
•
All batteries degrade and lose charge capacity over time as a result of use or storage,
and eventually need to be replaced.
•
Batteries are best stored in a cool, dark, dry place. Avoid storage in direct sunlight and in
vehicles parked outdoors.
•
Batteries may get warm while charging and discharging; this is normal behavior for all
batteries.
•
Use the AC adapter and the USB cable that came with this device.
•
Use the latest firmware; check for updates on a regular basis.
•
Device performance and runtime are affected by workload or usage. Higher workloads or
usage can lead to higher battery temperatures and faster battery power consumption.
•
Streaming large amounts of data affects the power consumption and reduces the
operating time of the battery.
General Battery Safety
•
Stop using a battery if its case appears damaged, swollen, or compromised. Examples
include, but are not limited to, leaking, odors, dents, corrosion, rust, cracks, swelling,
melting, and scratches.
•
Do not expose batteries to fire or other heat- generating environments.
•
Do not place the battery or the device in areas that may get hot. Examples include, but
are not limited to, on or near a space heater, cooking surface, cooking appliance, iron,
radiator, or fireplace.
•
Do not get the battery or the device wet. Even though they may dry and appear to operate
normally, the circuitry can slowly corrode and defeat its safety circuitry.
•
Do not crush, puncture, deform, or put a high degree of pressure on the battery, which
can cause an internal short circuit, resulting in overheating.
•
Avoid dropping the battery or the device. Dropping it, especially on a hard surface, may
cause damage to the battery and the device. If you suspect damage to the battery or the
device, replace it.
•
When the battery is outside the device, do not allow the battery to come in contact with
metal objects, such as coins, keys, jewelry, or tools.
