You Cannot Turn On The Product; The Power Turns Off Suddenly - Sony ILCE-7 How To Use Manual

You cannot turn on the product.

After inserting the battery pack into the product, it may take a few moments for the product to
power up.
Make sure that the battery pack is inserted correctly.
The battery pack will discharge by itself even if you do not use it. Charge the battery pack
before use.
Make sure that the battery is NP-FW50.
[249] Troubleshooting > Battery pack and power

The power turns off suddenly.

Depending on the product and battery pack temperature, the product may turn off
automatically to protect itself. In this case, a message is displayed on the product screen
before the product turns off.
If you do not operate the product for a certain period of time, it turns off automatically to
prevent wearing down the battery pack. Turn on the product again.
[250] Troubleshooting > Battery pack and power
The remaining battery level indicator shows an incorrect
level.
This phenomenon occurs when you use the product in an extremely hot or cold location.
Battery capacity decreases over time and through repeated use. If decreased usage time
between charges becomes significant, it is probably time to replace it with a new one.
[251] Troubleshooting > Battery pack and power
The charge lamp on the product flashes when charging
the battery pack.