Samsung SPHA580 Phone Manual page 185

Online. Buying the right batteries and accessories is the
best way to ensure they're genuine and safe.
In order to avoid damage, charge the battery only in
temperatures that range from 32° F to 113° F (0° C
to 45° C).
Don't use the battery charger in direct sunlight or in high
humidity areas, such as the bathroom.
Never dispose of the battery by incineration.
Keep the metal contacts on top of the battery clean.
Don't attempt to disassemble or short-circuit the battery.
The battery may need recharging if it has not been used
for a long period of time.
It's best to replace the battery when it no longer provides
acceptable performance. It can be recharged hundreds of
times before it needs replacing.
Don't store the battery in high temperature areas for long
periods of time. It's best to follow these storage rules:
Less than one month:
-4° F to 140° F (-20° C to 60° C)
More than one month:
-4° F to 113° F (-20° C to 45° C)
Disposal of Lithium Ion (Li-Ion) Batteries
For safe disposal options of your Li-Ion batteries, contact your nearest
Sprint authorized service center.
Special Note:
Be sure to dispose of your battery properly. In some areas,
the disposal of batteries in household or business trash may be prohibited.
Section 4A: Important Safety Information 167