E-M5 EVF battery drain

Started May 14, 2012 | Discussions thread
baxters
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Re: E-M5 EVF battery drain
In reply to Big Ga, 4 weeks ago

I took additional measurements. I use an Ex-Tech 380942 current meter that measures the magnetic field around a wire that I have looped between the battery and my EM5. Some generalities.

-Current draw depends on the brightness of the LCD screen. A bright screen draws  more current than a black screen created by putting a lens cap over the lens. If you are in art filter or scene mode, the bright screens draw more current.

-Flipping  between LCD and EVF normally does not change current draw unless the live view is showing a bright scene. The EVF draws less current when showing a bright scene. So you can minimize power by not using live view.

-A legacy lens draws less power than an M43 lens.

Here are some numbers.

Sleep mode:   55-65 ma
Review Mode: 200-220 ma
Menu Mode:   150 ma
Art Filters:      330 ma when selecting a filter.
Live View:      250 ma with body cap (no lens) screen black
                   330-370 with different lenses. Around 20-40 ma for the lens itself.

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