A:Answer You can use both LR6 (size AA) alkaline batteries and HR 15/51: HR6 (size AA) Nickel-Metal Hydride batteries for this camera
Alkaline batteries have a shorter life compared to the Nickel-Metal Hydride
batteries. For this reason, the power may turn off even though the remaining
charge indicator shows sufficient battery life remaining.
Battery performance differs greatly depending on the manufacturer and the type
of battery, and in some cases the battery life may be significantly shorter. This is
especially true at low temperatures, and you may not be able to shoot at
temperatures below 5°C (41°F).
Do not mix new and old batteries
Please read more information about each type of batteries and their precautions via pdf link below
page 164-166 https://docs.sony.com/release/dsc-h300_cyber-shotuserguide_en.pdf