Will a Hummingbird 230 portable fish finder work for ice fishing?

[Ziehnertfish007]

i just bought a new Hummingbird 230 portable fish finder and was wondering if it works for ice fishing.

[RapShack]

Probably.  Make sure the transducer hangs level, and you're going to want to keep it on the 20 degree beam.  I have the Piranhamax 175 and it works great on the ice, but it has more power than the 230.  I don't know if that will really matter in shallow water though. 

[Woodsman]

Maybe hard on batteries.
Looks like it uses disposable batteries and is not set-up to use a 7-9 ah battery.