Sony A7iii battery drain problem

[Geoff147]

I have recently bought a 2nd hand Sony a7iii. The battery appears to be draining very quickly.

I have updated the firmware, switched to airplane mode, reduced the brightness of the screen, altered auto power off to 10 secs. 

I am still seeing the battery drain very quickly. I have both a Sony NP Z100 battery and a third party battery. Both are draining at a similar rate.

Does anyone have any suggestions?

[danardeng]

Can you explain what you mean with “very quick”?

Have you resetted the camera just to be sure to not have any settings that can drain energy?

Otherwise there are two options: or your batteryes are old and exhausted, or there is an hardware problem on camera or lens.

[Geoff147]

My previous camera was an old Canon eos 600d. The battery lasted a long time. I've just a bit surprised that the Sony a7iii was draining down to empty in a day without taking too many photos. 

I have been using a Sony Zeiss 50mm 1.4 lens which I wonder if this has been consuming more battery power. I've just replaced it with the Sony 50 1.8 stock lens to see if this is less hungry.

If not I'll try your suggestion and reset to factory settings, just in case a setting is causing a power drain.

[danardeng]

You can’t compare reflex battery consumption with mirrorless.

Reflex camera doesn’t have any consumption when they doesn’t shoot.. mirrors cameras yes: just the ability to capture liveview and display in a lcd requires a lot of energy