Sony ILCA-99M2 - Manual (Page 50)

Charging time (Full charge)
The charging time is approximately 175 minutes using the battery charger (supplied).
The above charging time applies when charging a fully depleted battery pack at a temperature
of 25 °C (77 °F). Charging may take longer depending on conditions of use and circumstances.
Effective use of the battery pack
Battery performance decreases in low temperature environments. So in cold places, the
operational time of the battery pack is shorter. To ensure longer battery pack use, we
recommend putting the battery pack in your pocket close to your body to warm it up, and
insert it in the product immediately before you start shooting. If there are any metal objects
such as keys in your pocket, be careful of causing a short-circuit.
The battery pack will run down quickly if you use the flash or continuous shooting function
frequently, turn the power on/off frequently, or set the monitor very bright.
We recommend preparing spare battery packs and taking trial shots before taking the actual
shots.
If the battery terminal is dirty, you may not be able to turn on the product or the battery pack
may not be properly charged. In that case, clean the battery by lightly wiping off any dust
using a soft cloth or a cotton swab.
How to store 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. Store the battery in a cool, dry place after
removing it from the camera.
On battery life
The battery life is limited. If you use the same battery repeatedly, or use the same battery for
a long period, the battery capacity decreases gradually. If the available time of the battery is
shortened significantly, it is probably time to replace the battery pack with a new one.
The battery life varies according to how the battery pack is stored and the operating
conditions and environment in which each battery pack is used.
[21] Preparing the camera Inserting a memory card (sold separately)
Inserting/removing a memory card
Explains how to insert a memory card (sold separately) to the product.
Open the memory card cover. 1