How long do batteries last in wireless lavs and zoom h4n?

[leaftors]

I am shooting a long seminar, about 11 hours of continous talking, and I wanted to know how long a set of batteries will last in the zoom h4n and wireless lavs.

 

[OzGizmo]

Not that long..... Change the batteries then you take a rest / meal break.
The H4n can be hungry on batteries if you run phantom power. Radio mics battery life depends on type, power output etc.

 

[unclebob6958]

It also depends upon which wireless system you're using; batteries will last A LOT longer in, say, a Lectrosonics transmitter than in a bargain basement transmitter.

Zoom gear is notorious for eating batteries, so change the batteries frequently.

 

[Andrius Simutis]

You can also plug in the H4n to the wall outlet with the AC adapter. That is if you're not moving around the whole time.

 

[Rick R]

how long a set of batteries will last in wireless lavs.
-- How far can I go in my car before I run out of gas ?