Sony ILCE-7S - Manual (Page 216)

The battery life is limited. If you use the same battery pack repeatedly, or use the same
battery pack for a long period, the battery capacity decreases gradually. If the available
time of the battery pack shortens significantly, it is probably time to replace the battery
pack with a new one.
The battery life varies between different battery packs, and according to how the battery
pack is stored and the operating conditions and environment in which it is used.
Storing the battery pack
To maintain the battery pack’s function, charge the battery pack and then fully discharge it
in the camera at least once a year before storing it. Then remove the battery pack and
store in a cool, dry place.
[269] How to Use Precautions/This product Precautions
Charging the battery pack
The supplied AC Adaptor is dedicated to this product. Do not connect with other electronic
devices. Doing so may cause a malfunction.
Make sure to use a genuine Sony AC Adaptor.
If the product's Charge lamp flashes while charging, remove the battery pack being
charged, and then insert the same battery pack firmly back into the product. If the Charge
lamp flashes again, this may indicate a faulty battery or that a battery pack other than the
specified type has been inserted. Check that the battery pack is the specified type.
If the battery pack is the specified type, remove the battery pack, replace it with a new or
different one and check that the newly inserted battery is charging correctly. If the newly
inserted battery is charging correctly, the previously inserted battery may be faulty.
If the Charge lamp flashes even if the AC Adaptor is connected to the product and the
wall outlet (wall socket), this indicates that charging has stopped temporarily and is on
standby. Charging stops and enters standby status automatically when the temperature is
outside of the recommended operating temperature. When the temperature returns to the
appropriate range, charging resumes and the Charge lamp lights up again. We
recommend charging the battery pack in an ambient temperature of between 10°C to
30°C (50°F to 86°F).
When the AC Adaptor (supplied) is connected to the product, shooting/playback is not
available.
[270] How to Use Precautions/This product Precautions